diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-02-26 17:18:52 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-02-26 17:18:52 -0800 |
| commit | b305956abc3c50c52598bbf39b7a5f4850058ba8 (patch) | |
| tree | 9046d97af63236dba36bc3be139c7e0a92e09d41 /fs | |
| parent | 41630959ed5ce694ec2e8c0f3c69743e011394c8 (diff) | |
| parent | 398007f863a4af2b4a5a07219c5a617f1a098115 (diff) | |
| download | op-kernel-dev-b305956abc3c50c52598bbf39b7a5f4850058ba8.zip op-kernel-dev-b305956abc3c50c52598bbf39b7a5f4850058ba8.tar.gz | |
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs: (52 commits)
fs/xfs: Correct NULL test
xfs: optimize log flushing in xfs_fsync
xfs: only clear the suid bit once in xfs_write
xfs: kill xfs_bawrite
xfs: log changed inodes instead of writing them synchronously
xfs: remove invalid barrier optimization from xfs_fsync
xfs: kill the unused XFS_QMOPT_* flush flags V2
xfs: Use delay write promotion for dquot flushing
xfs: Sort delayed write buffers before dispatch
xfs: Don't issue buffer IO direct from AIL push V2
xfs: Use delayed write for inodes rather than async V2
xfs: Make inode reclaim states explicit
xfs: more reserved blocks fixups
xfs: turn off sign warnings
xfs: don't hold onto reserved blocks on remount,ro
xfs: quota limit statvfs available blocks
xfs: replace KM_LARGE with explicit vmalloc use
xfs: cleanup up xfs_log_force calling conventions
xfs: kill XLOG_VEC_SET_TYPE
xfs: remove duplicate buffer flags
...
Diffstat (limited to 'fs')
79 files changed, 1666 insertions, 1596 deletions
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile index 56641fe..5c5a366 100644 --- a/fs/xfs/Makefile +++ b/fs/xfs/Makefile @@ -16,7 +16,7 @@ # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # -EXTRA_CFLAGS += -I$(src) -I$(src)/linux-2.6 -funsigned-char +EXTRA_CFLAGS += -I$(src) -I$(src)/linux-2.6 XFS_LINUX := linux-2.6 diff --git a/fs/xfs/linux-2.6/kmem.c b/fs/xfs/linux-2.6/kmem.c index 2d3f90a..bc74055 100644 --- a/fs/xfs/linux-2.6/kmem.c +++ b/fs/xfs/linux-2.6/kmem.c @@ -16,7 +16,6 @@ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include <linux/mm.h> -#include <linux/vmalloc.h> #include <linux/highmem.h> #include <linux/swap.h> #include <linux/blkdev.h> @@ -24,8 +23,25 @@ #include "time.h" #include "kmem.h" -#define MAX_VMALLOCS 6 -#define MAX_SLAB_SIZE 0x20000 +/* + * Greedy allocation. May fail and may return vmalloced memory. + * + * Must be freed using kmem_free_large. + */ +void * +kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize) +{ + void *ptr; + size_t kmsize = maxsize; + + while (!(ptr = kmem_zalloc_large(kmsize))) { + if ((kmsize >>= 1) <= minsize) + kmsize = minsize; + } + if (ptr) + *size = kmsize; + return ptr; +} void * kmem_alloc(size_t size, unsigned int __nocast flags) @@ -34,19 +50,8 @@ kmem_alloc(size_t size, unsigned int __nocast flags) gfp_t lflags = kmem_flags_convert(flags); void *ptr; -#ifdef DEBUG - if (unlikely(!(flags & KM_LARGE) && (size > PAGE_SIZE))) { - printk(KERN_WARNING "Large %s attempt, size=%ld\n", - __func__, (long)size); - dump_stack(); - } -#endif - do { - if (size < MAX_SLAB_SIZE || retries > MAX_VMALLOCS) - ptr = kmalloc(size, lflags); - else - ptr = __vmalloc(size, lflags, PAGE_KERNEL); + ptr = kmalloc(size, lflags); if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP))) return ptr; if (!(++retries % 100)) @@ -68,27 +73,6 @@ kmem_zalloc(size_t size, unsigned int __nocast flags) return ptr; } -void * -kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize, - unsigned int __nocast flags) -{ - void *ptr; - size_t kmsize = maxsize; - unsigned int kmflags = (flags & ~KM_SLEEP) | KM_NOSLEEP; - - while (!(ptr = kmem_zalloc(kmsize, kmflags))) { - if ((kmsize <= minsize) && (flags & KM_NOSLEEP)) - break; - if ((kmsize >>= 1) <= minsize) { - kmsize = minsize; - kmflags = flags; - } - } - if (ptr) - *size = kmsize; - return ptr; -} - void kmem_free(const void *ptr) { diff --git a/fs/xfs/linux-2.6/kmem.h b/fs/xfs/linux-2.6/kmem.h index 179cbd6..f7c8f7a 100644 --- a/fs/xfs/linux-2.6/kmem.h +++ b/fs/xfs/linux-2.6/kmem.h @@ -21,6 +21,7 @@ #include <linux/slab.h> #include <linux/sched.h> #include <linux/mm.h> +#include <linux/vmalloc.h> /* * General memory allocation interfaces @@ -30,7 +31,6 @@ #define KM_NOSLEEP 0x0002u #define KM_NOFS 0x0004u #define KM_MAYFAIL 0x0008u -#define KM_LARGE 0x0010u /* * We use a special process flag to avoid recursive callbacks into @@ -42,7 +42,7 @@ kmem_flags_convert(unsigned int __nocast flags) { gfp_t lflags; - BUG_ON(flags & ~(KM_SLEEP|KM_NOSLEEP|KM_NOFS|KM_MAYFAIL|KM_LARGE)); + BUG_ON(flags & ~(KM_SLEEP|KM_NOSLEEP|KM_NOFS|KM_MAYFAIL)); if (flags & KM_NOSLEEP) { lflags = GFP_ATOMIC | __GFP_NOWARN; @@ -56,10 +56,25 @@ kmem_flags_convert(unsigned int __nocast flags) extern void *kmem_alloc(size_t, unsigned int __nocast); extern void *kmem_zalloc(size_t, unsigned int __nocast); -extern void *kmem_zalloc_greedy(size_t *, size_t, size_t, unsigned int __nocast); extern void *kmem_realloc(const void *, size_t, size_t, unsigned int __nocast); extern void kmem_free(const void *); +static inline void *kmem_zalloc_large(size_t size) +{ + void *ptr; + + ptr = vmalloc(size); + if (ptr) + memset(ptr, 0, size); + return ptr; +} +static inline void kmem_free_large(void *ptr) +{ + vfree(ptr); +} + +extern void *kmem_zalloc_greedy(size_t *, size_t, size_t); + /* * Zone interfaces */ diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/linux-2.6/xfs_acl.c index 883ca5a..bf85bbe 100644 --- a/fs/xfs/linux-2.6/xfs_acl.c +++ b/fs/xfs/linux-2.6/xfs_acl.c @@ -106,7 +106,7 @@ xfs_get_acl(struct inode *inode, int type) struct posix_acl *acl; struct xfs_acl *xfs_acl; int len = sizeof(struct xfs_acl); - char *ea_name; + unsigned char *ea_name; int error; acl = get_cached_acl(inode, type); @@ -133,7 +133,8 @@ xfs_get_acl(struct inode *inode, int type) if (!xfs_acl) return ERR_PTR(-ENOMEM); - error = -xfs_attr_get(ip, ea_name, (char *)xfs_acl, &len, ATTR_ROOT); + error = -xfs_attr_get(ip, ea_name, (unsigned char *)xfs_acl, + &len, ATTR_ROOT); if (error) { /* * If the attribute doesn't exist make sure we have a negative @@ -162,7 +163,7 @@ STATIC int xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl) { struct xfs_inode *ip = XFS_I(inode); - char *ea_name; + unsigned char *ea_name; int error; if (S_ISLNK(inode->i_mode)) @@ -194,7 +195,7 @@ xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl) (sizeof(struct xfs_acl_entry) * (XFS_ACL_MAX_ENTRIES - acl->a_count)); - error = -xfs_attr_set(ip, ea_name, (char *)xfs_acl, + error = -xfs_attr_set(ip, ea_name, (unsigned char *)xfs_acl, len, ATTR_ROOT); kfree(xfs_acl); @@ -262,7 +263,7 @@ xfs_set_mode(struct inode *inode, mode_t mode) } static int -xfs_acl_exists(struct inode *inode, char *name) +xfs_acl_exists(struct inode *inode, unsigned char *name) { int len = sizeof(struct xfs_acl); diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 6f3ebb6..6f76ba8 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -33,6 +33,7 @@ #include <linux/migrate.h> #include <linux/backing-dev.h> #include <linux/freezer.h> +#include <linux/list_sort.h> #include "xfs_sb.h" #include "xfs_inum.h" @@ -1072,22 +1073,30 @@ xfs_buf_ioerror( } int -xfs_bawrite( - void *mp, +xfs_bwrite( + struct xfs_mount *mp, struct xfs_buf *bp) { - trace_xfs_buf_bawrite(bp, _RET_IP_); + int iowait = (bp->b_flags & XBF_ASYNC) == 0; + int error = 0; - ASSERT(bp->b_bn != XFS_BUF_DADDR_NULL); + bp->b_strat = xfs_bdstrat_cb; + bp->b_mount = mp; + bp->b_flags |= XBF_WRITE; + if (!iowait) + bp->b_flags |= _XBF_RUN_QUEUES; xfs_buf_delwri_dequeue(bp); + xfs_buf_iostrategy(bp); - bp->b_flags &= ~(XBF_READ | XBF_DELWRI | XBF_READ_AHEAD); - bp->b_flags |= (XBF_WRITE | XBF_ASYNC | _XBF_RUN_QUEUES); + if (iowait) { + error = xfs_buf_iowait(bp); + if (error) + xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR); + xfs_buf_relse(bp); + } - bp->b_mount = mp; - bp->b_strat = xfs_bdstrat_cb; - return xfs_bdstrat_cb(bp); + return error; } void @@ -1106,6 +1115,126 @@ xfs_bdwrite( xfs_buf_delwri_queue(bp, 1); } +/* + * Called when we want to stop a buffer from getting written or read. + * We attach the EIO error, muck with its flags, and call biodone + * so that the proper iodone callbacks get called. + */ +STATIC int +xfs_bioerror( + xfs_buf_t *bp) +{ +#ifdef XFSERRORDEBUG + ASSERT(XFS_BUF_ISREAD(bp) || bp->b_iodone); +#endif + + /* + * No need to wait until the buffer is unpinned, we aren't flushing it. + */ + XFS_BUF_ERROR(bp, EIO); + + /* + * We're calling biodone, so delete XBF_DONE flag. + */ + XFS_BUF_UNREAD(bp); + XFS_BUF_UNDELAYWRITE(bp); + XFS_BUF_UNDONE(bp); + XFS_BUF_STALE(bp); + + XFS_BUF_CLR_BDSTRAT_FUNC(bp); + xfs_biodone(bp); + + return EIO; +} + +/* + * Same as xfs_bioerror, except that we are releasing the buffer + * here ourselves, and avoiding the biodone call. + * This is meant for userdata errors; metadata bufs come with + * iodone functions attached, so that we can track down errors. + */ +STATIC int +xfs_bioerror_relse( + struct xfs_buf *bp) +{ + int64_t fl = XFS_BUF_BFLAGS(bp); + /* + * No need to wait until the buffer is unpinned. + * We aren't flushing it. + * + * chunkhold expects B_DONE to be set, whether + * we actually finish the I/O or not. We don't want to + * change that interface. + */ + XFS_BUF_UNREAD(bp); + XFS_BUF_UNDELAYWRITE(bp); + XFS_BUF_DONE(bp); + XFS_BUF_STALE(bp); + XFS_BUF_CLR_IODONE_FUNC(bp); + XFS_BUF_CLR_BDSTRAT_FUNC(bp); + if (!(fl & XBF_ASYNC)) { + /* + * Mark b_error and B_ERROR _both_. + * Lot's of chunkcache code assumes that. + * There's no reason to mark error for + * ASYNC buffers. + */ + XFS_BUF_ERROR(bp, EIO); + XFS_BUF_FINISH_IOWAIT(bp); + } else { + xfs_buf_relse(bp); + } + + return EIO; +} + + +/* + * All xfs metadata buffers except log state machine buffers + * get this attached as their b_bdstrat callback function. + * This is so that we can catch a buffer + * after prematurely unpinning it to forcibly shutdown the filesystem. + */ +int +xfs_bdstrat_cb( + struct xfs_buf *bp) +{ + if (XFS_FORCED_SHUTDOWN(bp->b_mount)) { + trace_xfs_bdstrat_shut(bp, _RET_IP_); + /* + * Metadata write that didn't get logged but + * written delayed anyway. These aren't associated + * with a transaction, and can be ignored. + */ + if (!bp->b_iodone && !XFS_BUF_ISREAD(bp)) + return xfs_bioerror_relse(bp); + else + return xfs_bioerror(bp); + } + + xfs_buf_iorequest(bp); + return 0; +} + +/* + * Wrapper around bdstrat so that we can stop data from going to disk in case + * we are shutting down the filesystem. Typically user data goes thru this + * path; one of the exceptions is the superblock. + */ +void +xfsbdstrat( + struct xfs_mount *mp, + struct xfs_buf *bp) +{ + if (XFS_FORCED_SHUTDOWN(mp)) { + trace_xfs_bdstrat_shut(bp, _RET_IP_); + xfs_bioerror_relse(bp); + return; + } + + xfs_buf_iorequest(bp); +} + STATIC void _xfs_buf_ioend( xfs_buf_t *bp, @@ -1324,7 +1453,7 @@ xfs_buf_iomove( xfs_buf_t *bp, /* buffer to process */ size_t boff, /* starting buffer offset */ size_t bsize, /* length to copy */ - caddr_t data, /* data address */ + void *data, /* data address */ xfs_buf_rw_t mode) /* read/write/zero flag */ { size_t bend, cpoff, csize; @@ -1406,8 +1535,8 @@ xfs_alloc_bufhash( btp->bt_hashshift = external ? 3 : 8; /* 8 or 256 buckets */ btp->bt_hashmask = (1 << btp->bt_hashshift) - 1; - btp->bt_hash = kmem_zalloc((1 << btp->bt_hashshift) * - sizeof(xfs_bufhash_t), KM_SLEEP | KM_LARGE); + btp->bt_hash = kmem_zalloc_large((1 << btp->bt_hashshift) * + sizeof(xfs_bufhash_t)); for (i = 0; i < (1 << btp->bt_hashshift); i++) { spin_lock_init(&btp->bt_hash[i].bh_lock); INIT_LIST_HEAD(&btp->bt_hash[i].bh_list); @@ -1418,7 +1547,7 @@ STATIC void xfs_free_bufhash( xfs_buftarg_t *btp) { - kmem_free(btp->bt_hash); + kmem_free_large(btp->bt_hash); btp->bt_hash = NULL; } @@ -1623,6 +1752,11 @@ xfs_buf_delwri_queue( list_del(&bp->b_list); } + if (list_empty(dwq)) { + /* start xfsbufd as it is about to have something to do */ + wake_up_process(bp->b_target->bt_task); + } + bp->b_flags |= _XBF_DELWRI_Q; list_add_tail(&bp->b_list, dwq); bp->b_queuetime = jiffies; @@ -1654,6 +1788,35 @@ xfs_buf_delwri_dequeue( trace_xfs_buf_delwri_dequeue(bp, _RET_IP_); } +/* + * If a delwri buffer needs to be pushed before it has aged out, then promote + * it to the head of the delwri queue so that it will be flushed on the next + * xfsbufd run. We do this by resetting the queuetime of the buffer to be older + * than the age currently needed to flush the buffer. Hence the next time the + * xfsbufd sees it is guaranteed to be considered old enough to flush. + */ +void +xfs_buf_delwri_promote( + struct xfs_buf *bp) +{ + struct xfs_buftarg *btp = bp->b_target; + long age = xfs_buf_age_centisecs * msecs_to_jiffies(10) + 1; + + ASSERT(bp->b_flags & XBF_DELWRI); + ASSERT(bp->b_flags & _XBF_DELWRI_Q); + + /* + * Check the buffer age before locking the delayed write queue as we + * don't need to promote buffers that are already past the flush age. + */ + if (bp->b_queuetime < jiffies - age) + return; + bp->b_queuetime = jiffies - age; + spin_lock(&btp->bt_delwrite_lock); + list_move(&bp->b_list, &btp->bt_delwrite_queue); + spin_unlock(&btp->bt_delwrite_lock); +} + STATIC void xfs_buf_runall_queues( struct workqueue_struct *queue) @@ -1672,6 +1835,8 @@ xfsbufd_wakeup( list_for_each_entry(btp, &xfs_buftarg_list, bt_list) { if (test_bit(XBT_FORCE_SLEEP, &btp->bt_flags)) continue; + if (list_empty(&btp->bt_delwrite_queue)) + continue; set_bit(XBT_FORCE_FLUSH, &btp->bt_flags); wake_up_process(btp->bt_task); } @@ -1722,20 +1887,53 @@ xfs_buf_delwri_split( } +/* + * Compare function is more complex than it needs to be because + * the return value is only 32 bits and we are doing comparisons + * on 64 bit values + */ +static int +xfs_buf_cmp( + void *priv, + struct list_head *a, + struct list_head *b) +{ + struct xfs_buf *ap = container_of(a, struct xfs_buf, b_list); + struct xfs_buf *bp = container_of(b, struct xfs_buf, b_list); + xfs_daddr_t diff; + + diff = ap->b_bn - bp->b_bn; + if (diff < 0) + return -1; + if (diff > 0) + return 1; + return 0; +} + +void +xfs_buf_delwri_sort( + xfs_buftarg_t *target, + struct list_head *list) +{ + list_sort(NULL, list, xfs_buf_cmp); +} + STATIC int xfsbufd( void *data) { - struct list_head tmp; - xfs_buftarg_t *target = (xfs_buftarg_t *)data; - int count; - xfs_buf_t *bp; + xfs_buftarg_t *target = (xfs_buftarg_t *)data; current->flags |= PF_MEMALLOC; set_freezable(); do { + long age = xfs_buf_age_centisecs * msecs_to_jiffies(10); + long tout = xfs_buf_timer_centisecs * msecs_to_jiffies(10); + int count = 0; + struct list_head tmp; + if (unlikely(freezing(current))) { set_bit(XBT_FORCE_SLEEP, &target->bt_flags); refrigerator(); @@ -1743,17 +1941,16 @@ xfsbufd( clear_bit(XBT_FORCE_SLEEP, &target->bt_flags); } - schedule_timeout_interruptible( - xfs_buf_timer_centisecs * msecs_to_jiffies(10)); + /* sleep for a long time if there is nothing to do. */ + if (list_empty(&target->bt_delwrite_queue)) + tout = MAX_SCHEDULE_TIMEOUT; + schedule_timeout_interruptible(tout); - xfs_buf_delwri_split(target, &tmp, - xfs_buf_age_centisecs * msecs_to_jiffies(10)); - - count = 0; + xfs_buf_delwri_split(target, &tmp, age); + list_sort(NULL, &tmp, xfs_buf_cmp); while (!list_empty(&tmp)) { - bp = list_entry(tmp.next, xfs_buf_t, b_list); - ASSERT(target == bp->b_target); - + struct xfs_buf *bp; + bp = list_first_entry(&tmp, struct xfs_buf, b_list); list_del_init(&bp->b_list); xfs_buf_iostrategy(bp); count++; @@ -1779,42 +1976,45 @@ xfs_flush_buftarg( xfs_buftarg_t *target, int wait) { - struct list_head tmp; - xfs_buf_t *bp, *n; + xfs_buf_t *bp; int pincount = 0; + LIST_HEAD(tmp_list); + LIST_HEAD(wait_list); xfs_buf_runall_queues(xfsconvertd_workqueue); xfs_buf_runall_queues(xfsdatad_workqueue); xfs_buf_runall_queues(xfslogd_workqueue); set_bit(XBT_FORCE_FLUSH, &target->bt_flags); - pincount = xfs_buf_delwri_split(target, &tmp, 0); + pincount = xfs_buf_delwri_split(target, &tmp_list, 0); /* - * Dropped the delayed write list lock, now walk the temporary list + * Dropped the delayed write list lock, now walk the temporary list. + * All I/O is issued async and then if we need to wait for completion + * we do that after issuing all the IO. */ - list_for_each_entry_safe(bp, n, &tmp, b_list) { + list_sort(NULL, &tmp_list, xfs_buf_cmp); + while (!list_empty(&tmp_list)) { + bp = list_first_entry(&tmp_list, struct xfs_buf, b_list); ASSERT(target == bp->b_target); - if (wait) + list_del_init(&bp->b_list); + if (wait) { bp->b_flags &= ~XBF_ASYNC; - else - list_del_init(&bp->b_list); - + list_add(&bp->b_list, &wait_list); + } xfs_buf_iostrategy(bp); } - if (wait) + if (wait) { + /* Expedite and wait for IO to complete. */ blk_run_address_space(target->bt_mapping); + while (!list_empty(&wait_list)) { + bp = list_first_entry(&wait_list, struct xfs_buf, b_list); - /* - * Remaining list items must be flushed before returning - */ - while (!list_empty(&tmp)) { - bp = list_entry(tmp.next, xfs_buf_t, b_list); - - list_del_init(&bp->b_list); - xfs_iowait(bp); - xfs_buf_relse(bp); + list_del_init(&bp->b_list); + xfs_iowait(bp); + xfs_buf_relse(bp); + } } return pincount; diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h index a34c7b5..386e736 100644 --- a/fs/xfs/linux-2.6/xfs_buf.h +++ b/fs/xfs/linux-2.6/xfs_buf.h @@ -232,13 +232,17 @@ extern void xfs_buf_lock(xfs_buf_t *); extern void xfs_buf_unlock(xfs_buf_t *); /* Buffer Read and Write Routines */ -extern int xfs_bawrite(void *mp, xfs_buf_t *bp); +extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp); extern void xfs_bdwrite(void *mp, xfs_buf_t *bp); + +extern void xfsbdstrat(struct xfs_mount *, struct xfs_buf *); +extern int xfs_bdstrat_cb(struct xfs_buf *); + extern void xfs_buf_ioend(xfs_buf_t *, int); extern void xfs_buf_ioerror(xfs_buf_t *, int); extern int xfs_buf_iorequest(xfs_buf_t *); extern int xfs_buf_iowait(xfs_buf_t *); -extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, xfs_caddr_t, +extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, void *, xfs_buf_rw_t); static inline int xfs_buf_iostrategy(xfs_buf_t *bp) @@ -261,6 +265,7 @@ extern int xfs_buf_ispin(xfs_buf_t *); /* Delayed Write Buffer Routines */ extern void xfs_buf_delwri_dequeue(xfs_buf_t *); +extern void xfs_buf_delwri_promote(xfs_buf_t *); /* Buffer Daemon Setup Routines */ extern int xfs_buf_init(void); @@ -270,33 +275,19 @@ extern void xfs_buf_terminate(void); ({ char __b[BDEVNAME_SIZE]; bdevname((target)->bt_bdev, __b); __b; }) -#define XFS_B_ASYNC XBF_ASYNC -#define XFS_B_DELWRI XBF_DELWRI -#define XFS_B_READ XBF_READ -#define XFS_B_WRITE XBF_WRITE -#define XFS_B_STALE XBF_STALE - -#define XFS_BUF_TRYLOCK XBF_TRYLOCK -#define XFS_INCORE_TRYLOCK XBF_TRYLOCK -#define XFS_BUF_LOCK XBF_LOCK -#define XFS_BUF_MAPPED XBF_MAPPED - -#define BUF_BUSY XBF_DONT_BLOCK - #define XFS_BUF_BFLAGS(bp) ((bp)->b_flags) #define XFS_BUF_ZEROFLAGS(bp) ((bp)->b_flags &= \ ~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI|XBF_ORDERED)) -#define XFS_BUF_STALE(bp) ((bp)->b_flags |= XFS_B_STALE) -#define XFS_BUF_UNSTALE(bp) ((bp)->b_flags &= ~XFS_B_STALE) -#define XFS_BUF_ISSTALE(bp) ((bp)->b_flags & XFS_B_STALE) +#define XFS_BUF_STALE(bp) ((bp)->b_flags |= XBF_STALE) +#define XFS_BUF_UNSTALE(bp) ((bp)->b_flags &= ~XBF_STALE) +#define XFS_BUF_ISSTALE(bp) ((bp)->b_flags & XBF_STALE) #define XFS_BUF_SUPER_STALE(bp) do { \ XFS_BUF_STALE(bp); \ xfs_buf_delwri_dequeue(bp); \ XFS_BUF_DONE(bp); \ } while (0) -#define XFS_BUF_MANAGE XBF_FS_MANAGED #define XFS_BUF_UNMANAGE(bp) ((bp)->b_flags &= ~XBF_FS_MANAGED) #define XFS_BUF_DELAYWRITE(bp) ((bp)->b_flags |= XBF_DELWRI) @@ -385,31 +376,11 @@ static inline void xfs_buf_relse(xfs_buf_t *bp) #define xfs_biomove(bp, off, len, data, rw) \ xfs_buf_iomove((bp), (off), (len), (data), \ - ((rw) == XFS_B_WRITE) ? XBRW_WRITE : XBRW_READ) + ((rw) == XBF_WRITE) ? XBRW_WRITE : XBRW_READ) #define xfs_biozero(bp, off, len) \ xfs_buf_iomove((bp), (off), (len), NULL, XBRW_ZERO) - -static inline int XFS_bwrite(xfs_buf_t *bp) -{ - int iowait = (bp->b_flags & XBF_ASYNC) == 0; - int error = 0; - - if (!iowait) - bp->b_flags |= _XBF_RUN_QUEUES; - - xfs_buf_delwri_dequeue(bp); - xfs_buf_iostrategy(bp); - if (iowait) { - error = xfs_buf_iowait(bp); - xfs_buf_relse(bp); - } - return error; -} - -#define XFS_bdstrat(bp) xfs_buf_iorequest(bp) - #define xfs_iowait(bp) xfs_buf_iowait(bp) #define xfs_baread(target, rablkno, ralen) \ @@ -424,6 +395,7 @@ extern void xfs_free_buftarg(struct xfs_mount *, struct xfs_buftarg *); extern void xfs_wait_buftarg(xfs_buftarg_t *); extern int xfs_setsize_buftarg(xfs_buftarg_t *, unsigned int, unsigned int); extern int xfs_flush_buftarg(xfs_buftarg_t *, int); + #ifdef CONFIG_KDB_MODULES extern struct list_head *xfs_get_buftarg_list(void); #endif diff --git a/fs/xfs/linux-2.6/xfs_fs_subr.c b/fs/xfs/linux-2.6/xfs_fs_subr.c index 7501b85..b6918d7 100644 --- a/fs/xfs/linux-2.6/xfs_fs_subr.c +++ b/fs/xfs/linux-2.6/xfs_fs_subr.c @@ -79,7 +79,7 @@ xfs_flush_pages( xfs_iflags_clear(ip, XFS_ITRUNCATED); ret = -filemap_fdatawrite(mapping); } - if (flags & XFS_B_ASYNC) + if (flags & XBF_ASYNC) return ret; ret2 = xfs_wait_on_pages(ip, first, last); if (!ret) diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c index a034cf6..4ea1ee1 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl.c +++ b/fs/xfs/linux-2.6/xfs_ioctl.c @@ -447,12 +447,12 @@ xfs_attrlist_by_handle( int xfs_attrmulti_attr_get( struct inode *inode, - char *name, - char __user *ubuf, + unsigned char *name, + unsigned char __user *ubuf, __uint32_t *len, __uint32_t flags) { - char *kbuf; + unsigned char *kbuf; int error = EFAULT; if (*len > XATTR_SIZE_MAX) @@ -476,12 +476,12 @@ xfs_attrmulti_attr_get( int xfs_attrmulti_attr_set( struct inode *inode, - char *name, - const char __user *ubuf, + unsigned char *name, + const unsigned char __user *ubuf, __uint32_t len, __uint32_t flags) { - char *kbuf; + unsigned char *kbuf; int error = EFAULT; if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) @@ -501,7 +501,7 @@ xfs_attrmulti_attr_set( int xfs_attrmulti_attr_remove( struct inode *inode, - char *name, + unsigned char *name, __uint32_t flags) { if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) @@ -519,7 +519,7 @@ xfs_attrmulti_by_handle( xfs_fsop_attrmulti_handlereq_t am_hreq; struct dentry *dentry; unsigned int i, size; - char *attr_name; + unsigned char *attr_name; if (!capable(CAP_SYS_ADMIN)) return -XFS_ERROR(EPERM); @@ -547,7 +547,7 @@ xfs_attrmulti_by_handle( error = 0; for (i = 0; i < am_hreq.opcount; i++) { - ops[i].am_error = strncpy_from_user(attr_name, + ops[i].am_error = strncpy_from_user((char *)attr_name, ops[i].am_attrname, MAXNAMELEN); if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) error = -ERANGE; @@ -1431,6 +1431,9 @@ xfs_file_ioctl( if (!capable(CAP_SYS_ADMIN)) return -EPERM; + if (mp->m_flags & XFS_MOUNT_RDONLY) + return -XFS_ERROR(EROFS); + if (copy_from_user(&inout, arg, sizeof(inout))) return -XFS_ERROR(EFAULT); diff --git a/fs/xfs/linux-2.6/xfs_ioctl.h b/fs/xfs/linux-2.6/xfs_ioctl.h index 7bd7c6a..d56173b 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl.h +++ b/fs/xfs/linux-2.6/xfs_ioctl.h @@ -45,23 +45,23 @@ xfs_readlink_by_handle( extern int xfs_attrmulti_attr_get( struct inode *inode, - char *name, - char __user *ubuf, + unsigned char *name, + unsigned char __user *ubuf, __uint32_t *len, __uint32_t flags); extern int - xfs_attrmulti_attr_set( +xfs_attrmulti_attr_set( struct inode *inode, - char *name, - const char __user *ubuf, + unsigned char *name, + const unsigned char __user *ubuf, __uint32_t len, __uint32_t flags); extern int xfs_attrmulti_attr_remove( struct inode *inode, - char *name, + unsigned char *name, __uint32_t flags); extern struct dentry * diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/linux-2.6/xfs_ioctl32.c index be1527b..0bf6d61 100644 --- a/fs/xfs/linux-2.6/xfs_ioctl32.c +++ b/fs/xfs/linux-2.6/xfs_ioctl32.c @@ -411,7 +411,7 @@ xfs_compat_attrmulti_by_handle( compat_xfs_fsop_attrmulti_handlereq_t am_hreq; struct dentry *dentry; unsigned int i, size; - char *attr_name; + unsigned char *attr_name; if (!capable(CAP_SYS_ADMIN)) return -XFS_ERROR(EPERM); @@ -440,7 +440,7 @@ xfs_compat_attrmulti_by_handle( error = 0; for (i = 0; i < am_hreq.opcount; i++) { - ops[i].am_error = strncpy_from_user(attr_name, + ops[i].am_error = strncpy_from_user((char *)attr_name, compat_ptr(ops[i].am_attrname), MAXNAMELEN); if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN) diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c index 2259460..e8566bb 100644 --- a/fs/xfs/linux-2.6/xfs_iops.c +++ b/fs/xfs/linux-2.6/xfs_iops.c @@ -140,10 +140,10 @@ xfs_init_security( struct xfs_inode *ip = XFS_I(inode); size_t length; void *value; - char *name; + unsigned char *name; int error; - error = security_inode_init_security(inode, dir, &name, + error = security_inode_init_security(inode, dir, (char **)&name, &value, &length); if (error) { if (error == -EOPNOTSUPP) diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c index 0d32457..eac6f80 100644 --- a/fs/xfs/linux-2.6/xfs_lrw.c +++ b/fs/xfs/linux-2.6/xfs_lrw.c @@ -630,18 +630,9 @@ start: * by root. This keeps people from modifying setuid and * setgid binaries. */ - - if (((xip->i_d.di_mode & S_ISUID) || - ((xip->i_d.di_mode & (S_ISGID | S_IXGRP)) == - (S_ISGID | S_IXGRP))) && - !capable(CAP_FSETID)) { - error = xfs_write_clear_setuid(xip); - if (likely(!error)) - error = -file_remove_suid(file); - if (unlikely(error)) { - goto out_unlock_internal; - } - } + error = -file_remove_suid(file); + if (unlikely(error)) + goto out_unlock_internal; /* We can write back this queue in page reclaim */ current->backing_dev_info = mapping->backing_dev_info; @@ -784,53 +775,6 @@ write_retry: } /* - * All xfs metadata buffers except log state machine buffers - * get this attached as their b_bdstrat callback function. - * This is so that we can catch a buffer - * after prematurely unpinning it to forcibly shutdown the filesystem. - */ -int -xfs_bdstrat_cb(struct xfs_buf *bp) -{ - if (XFS_FORCED_SHUTDOWN(bp->b_mount)) { - trace_xfs_bdstrat_shut(bp, _RET_IP_); - /* - * Metadata write that didn't get logged but - * written delayed anyway. These aren't associated - * with a transaction, and can be ignored. - */ - if (XFS_BUF_IODONE_FUNC(bp) == NULL && - (XFS_BUF_ISREAD(bp)) == 0) - return (xfs_bioerror_relse(bp)); - else - return (xfs_bioerror(bp)); - } - - xfs_buf_iorequest(bp); - return 0; -} - -/* - * Wrapper around bdstrat so that we can stop data from going to disk in case - * we are shutting down the filesystem. Typically user data goes thru this - * path; one of the exceptions is the superblock. - */ -void -xfsbdstrat( - struct xfs_mount *mp, - struct xfs_buf *bp) -{ - ASSERT(mp); - if (!XFS_FORCED_SHUTDOWN(mp)) { - xfs_buf_iorequest(bp); - return; - } - - trace_xfs_bdstrat_shut(bp, _RET_IP_); - xfs_bioerror_relse(bp); -} - -/* * If the underlying (data/log/rt) device is readonly, there are some * operations that cannot proceed. */ diff --git a/fs/xfs/linux-2.6/xfs_lrw.h b/fs/xfs/linux-2.6/xfs_lrw.h index d1f7789..342ae8c 100644 --- a/fs/xfs/linux-2.6/xfs_lrw.h +++ b/fs/xfs/linux-2.6/xfs_lrw.h @@ -22,9 +22,6 @@ struct xfs_mount; struct xfs_inode; struct xfs_buf; -/* errors from xfsbdstrat() must be extracted from the buffer */ -extern void xfsbdstrat(struct xfs_mount *, struct xfs_buf *); -extern int xfs_bdstrat_cb(struct xfs_buf *); extern int xfs_dev_is_read_only(struct xfs_mount *, char *); extern int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t); diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c index 77414db..25ea240 100644 --- a/fs/xfs/linux-2.6/xfs_super.c +++ b/fs/xfs/linux-2.6/xfs_super.c @@ -877,12 +877,11 @@ xfsaild( { struct xfs_ail *ailp = data; xfs_lsn_t last_pushed_lsn = 0; - long tout = 0; + long tout = 0; /* milliseconds */ while (!kthread_should_stop()) { - if (tout) - schedule_timeout_interruptible(msecs_to_jiffies(tout)); - tout = 1000; + schedule_timeout_interruptible(tout ? + msecs_to_jiffies(tout) : MAX_SCHEDULE_TIMEOUT); /* swsusp */ try_to_freeze(); @@ -1022,12 +1021,45 @@ xfs_fs_dirty_inode( XFS_I(inode)->i_update_core = 1; } -/* - * Attempt to flush the inode, this will actually fail - * if the inode is pinned, but we dirty the inode again - * at the point when it is unpinned after a log write, - * since this is when the inode itself becomes flushable. - */ +STATIC int +xfs_log_inode( + struct xfs_inode *ip) +{ + struct xfs_mount *mp = ip->i_mount; + struct xfs_trans *tp; + int error; + + xfs_iunlock(ip, XFS_ILOCK_SHARED); + tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS); + error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0); + + if (error) { + xfs_trans_cancel(tp, 0); + /* we need to return with the lock hold shared */ + xfs_ilock(ip, XFS_ILOCK_SHARED); + return error; + } + + xfs_ilock(ip, XFS_ILOCK_EXCL); + + /* + * Note - it's possible that we might have pushed ourselves out of the + * way during trans_reserve which would flush the inode. But there's + * no guarantee that the inode buffer has actually gone out yet (it's + * delwri). Plus the buffer could be pinned anyway if it's part of + * an inode in another recent transaction. So we play it safe and + * fire off the transaction anyway. + */ + xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); + xfs_trans_ihold(tp, ip); + xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); + xfs_trans_set_sync(tp); + error = xfs_trans_commit(tp, 0); + xfs_ilock_demote(ip, XFS_ILOCK_EXCL); + + return error; +} + STATIC int xfs_fs_write_inode( struct inode *inode, @@ -1035,7 +1067,7 @@ xfs_fs_write_inode( { struct xfs_inode *ip = XFS_I(inode); struct xfs_mount *mp = ip->i_mount; - int error = 0; + int error = EAGAIN; xfs_itrace_entry(ip); @@ -1046,35 +1078,55 @@ xfs_fs_write_inode( error = xfs_wait_on_pages(ip, 0, -1); if (error) goto out; - } - - /* - * Bypass inodes which have already been cleaned by - * the inode flush clustering code inside xfs_iflush - */ - if (xfs_inode_clean(ip)) - goto out; - /* - * We make this non-blocking if the inode is contended, return - * EAGAIN to indicate to the caller that they did not succeed. - * This prevents the flush path from blocking on inodes inside - * another operation right now, they get caught later by xfs_sync. - */ - if (sync) { + /* + * Make sure the inode has hit stable storage. By using the + * log and the fsync transactions we reduce the IOs we have + * to do here from two (log and inode) to just the log. + * + * Note: We still need to do a delwri write of the inode after + * this to flush it to the backing buffer so that bulkstat + * works properly if this is the first time the inode has been + * written. Because we hold the ilock atomically over the + * transaction commit and the inode flush we are guaranteed + * that the inode is not pinned when it returns. If the flush + * lock is already held, then the inode has already been + * flushed once and we don't need to flush it again. Hence + * the code will only flush the inode if it isn't already + * being flushed. + */ xfs_ilock(ip, XFS_ILOCK_SHARED); - xfs_iflock(ip); - - error = xfs_iflush(ip, XFS_IFLUSH_SYNC); + if (ip->i_update_core) { + error = xfs_log_inode(ip); + if (error) + goto out_unlock; + } } else { - error = EAGAIN; + /* + * We make this non-blocking if the inode is contended, return + * EAGAIN to indicate to the caller that they did not succeed. + * This prevents the flush path from blocking on inodes inside + * another operation right now, they get caught later by xfs_sync. + */ if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) goto out; - if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) - goto out_unlock; + } - error = xfs_iflush(ip, XFS_IFLUSH_ASYNC_NOBLOCK); + if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) + goto out_unlock; + + /* + * Now we have the flush lock and the inode is not pinned, we can check + * if the inode is really clean as we know that there are no pending + * transaction completions, it is not waiting on the delayed write + * queue and there is no IO in progress. + */ + if (xfs_inode_clean(ip)) { + xfs_ifunlock(ip); + error = 0; + goto out_unlock; } + error = xfs_iflush(ip, 0); out_unlock: xfs_iunlock(ip, XFS_ILOCK_SHARED); @@ -1257,6 +1309,29 @@ xfs_fs_statfs( return 0; } +STATIC void +xfs_save_resvblks(struct xfs_mount *mp) +{ + __uint64_t resblks = 0; + + mp->m_resblks_save = mp->m_resblks; + xfs_reserve_blocks(mp, &resblks, NULL); +} + +STATIC void +xfs_restore_resvblks(struct xfs_mount *mp) +{ + __uint64_t resblks; + + if (mp->m_resblks_save) { + resblks = mp->m_resblks_save; + mp->m_resblks_save = 0; + } else + resblks = xfs_default_resblks(mp); + + xfs_reserve_blocks(mp, &resblks, NULL); +} + STATIC int xfs_fs_remount( struct super_block *sb, @@ -1336,11 +1411,27 @@ xfs_fs_remount( } mp->m_update_flags = 0; } + + /* + * Fill out the reserve pool if it is empty. Use the stashed + * value if it is non-zero, otherwise go with the default. + */ + xfs_restore_resvblks(mp); } /* rw -> ro */ if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) { + /* + * After we have synced the data but before we sync the + * metadata, we need to free up the reserve block pool so that + * the used block count in the superblock on disk is correct at + * the end of the remount. Stash the current reserve pool size + * so that if we get remounted rw, we can return it to the same + * size. + */ + xfs_quiesce_data(mp); + xfs_save_resvblks(mp); xfs_quiesce_attr(mp); mp->m_flags |= XFS_MOUNT_RDONLY; } @@ -1359,11 +1450,22 @@ xfs_fs_freeze( { struct xfs_mount *mp = XFS_M(sb); + xfs_save_resvblks(mp); xfs_quiesce_attr(mp); return -xfs_fs_log_dummy(mp); } STATIC int +xfs_fs_unfreeze( + struct super_block *sb) +{ + struct xfs_mount *mp = XFS_M(sb); + + xfs_restore_resvblks(mp); + return 0; +} + +STATIC int xfs_fs_show_options( struct seq_file *m, struct vfsmount *mnt) @@ -1585,6 +1687,7 @@ static const struct super_operations xfs_super_operations = { .put_super = xfs_fs_put_super, .sync_fs = xfs_fs_sync_fs, .freeze_fs = xfs_fs_freeze, + .unfreeze_fs = xfs_fs_unfreeze, .statfs = xfs_fs_statfs, .remount_fs = xfs_fs_remount, .show_options = xfs_fs_show_options, diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c index 1f5e4bb..a9f6d20 100644 --- a/fs/xfs/linux-2.6/xfs_sync.c +++ b/fs/xfs/linux-2.6/xfs_sync.c @@ -90,14 +90,13 @@ xfs_inode_ag_lookup( STATIC int xfs_inode_ag_walk( struct xfs_mount *mp, - xfs_agnumber_t ag, + struct xfs_perag *pag, int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag, int flags), int flags, int tag, int exclusive) { - struct xfs_perag *pag = &mp->m_perag[ag]; uint32_t first_index; int last_error = 0; int skipped; @@ -141,8 +140,6 @@ restart: delay(1); goto restart; } - - xfs_put_perag(mp, pag); return last_error; } @@ -160,10 +157,16 @@ xfs_inode_ag_iterator( xfs_agnumber_t ag; for (ag = 0; ag < mp->m_sb.sb_agcount; ag++) { - if (!mp->m_perag[ag].pag_ici_init) + struct xfs_perag *pag; + + pag = xfs_perag_get(mp, ag); + if (!pag->pag_ici_init) { + xfs_perag_put(pag); continue; - error = xfs_inode_ag_walk(mp, ag, execute, flags, tag, + } + error = xfs_inode_ag_walk(mp, pag, execute, flags, tag, exclusive); + xfs_perag_put(pag); if (error) { last_error = error; if (error == EFSCORRUPTED) @@ -231,7 +234,7 @@ xfs_sync_inode_data( } error = xfs_flush_pages(ip, 0, -1, (flags & SYNC_WAIT) ? - 0 : XFS_B_ASYNC, FI_NONE); + 0 : XBF_ASYNC, FI_NONE); xfs_iunlock(ip, XFS_IOLOCK_SHARED); out_wait: @@ -267,8 +270,7 @@ xfs_sync_inode_attr( goto out_unlock; } - error = xfs_iflush(ip, (flags & SYNC_WAIT) ? - XFS_IFLUSH_SYNC : XFS_IFLUSH_DELWRI); + error = xfs_iflush(ip, flags); out_unlock: xfs_iunlock(ip, XFS_ILOCK_SHARED); @@ -293,10 +295,7 @@ xfs_sync_data( if (error) return XFS_ERROR(error); - xfs_log_force(mp, 0, - (flags & SYNC_WAIT) ? - XFS_LOG_FORCE | XFS_LOG_SYNC : - XFS_LOG_FORCE); + xfs_log_force(mp, (flags & SYNC_WAIT) ? XFS_LOG_SYNC : 0); return 0; } @@ -322,10 +321,6 @@ xfs_commit_dummy_trans( struct xfs_inode *ip = mp->m_rootip; struct xfs_trans *tp; int error; - int log_flags = XFS_LOG_FORCE; - - if (flags & SYNC_WAIT) - log_flags |= XFS_LOG_SYNC; /* * Put a dummy transaction in the log to tell recovery @@ -347,11 +342,11 @@ xfs_commit_dummy_trans( xfs_iunlock(ip, XFS_ILOCK_EXCL); /* the log force ensures this transaction is pushed to disk */ - xfs_log_force(mp, 0, log_flags); + xfs_log_force(mp, (flags & SYNC_WAIT) ? XFS_LOG_SYNC : 0); return error; } -int +STATIC int xfs_sync_fsdata( struct xfs_mount *mp, int flags) @@ -367,7 +362,7 @@ xfs_sync_fsdata( if (flags & SYNC_TRYLOCK) { ASSERT(!(flags & SYNC_WAIT)); - bp = xfs_getsb(mp, XFS_BUF_TRYLOCK); + bp = xfs_getsb(mp, XBF_TRYLOCK); if (!bp) goto out; @@ -387,7 +382,7 @@ xfs_sync_fsdata( * become pinned in between there and here. */ if (XFS_BUF_ISPINNED(bp)) - xfs_log_force(mp, 0, XFS_LOG_FORCE); + xfs_log_force(mp, 0); } @@ -448,9 +443,6 @@ xfs_quiesce_data( xfs_sync_data(mp, SYNC_WAIT); xfs_qm_sync(mp, SYNC_WAIT); - /* drop inode references pinned by filestreams */ - xfs_filestream_flush(mp); - /* write superblock and hoover up shutdown errors */ error = xfs_sync_fsdata(mp, SYNC_WAIT); @@ -467,16 +459,18 @@ xfs_quiesce_fs( { int count = 0, pincount; + xfs_reclaim_inodes(mp, 0); xfs_flush_buftarg(mp->m_ddev_targp, 0); - xfs_reclaim_inodes(mp, XFS_IFLUSH_DELWRI_ELSE_ASYNC); /* * This loop must run at least twice. The first instance of the loop * will flush most meta data but that will generate more meta data * (typically directory updates). Which then must be flushed and - * logged before we can write the unmount record. + * logged before we can write the unmount record. We also so sync + * reclaim of inodes to catch any that the above delwri flush skipped. */ do { + xfs_reclaim_inodes(mp, SYNC_WAIT); xfs_sync_attr(mp, SYNC_WAIT); pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1); if (!pincount) { @@ -575,7 +569,7 @@ xfs_flush_inodes( igrab(inode); xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_inodes_work, &completion); wait_for_completion(&completion); - xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC); + xfs_log_force(ip->i_mount, XFS_LOG_SYNC); } /* @@ -591,8 +585,8 @@ xfs_sync_worker( int error; if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { - xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE); - xfs_reclaim_inodes(mp, XFS_IFLUSH_DELWRI_ELSE_ASYNC); + xfs_log_force(mp, 0); + xfs_reclaim_inodes(mp, 0); /* dgc: errors ignored here */ error = xfs_qm_sync(mp, SYNC_TRYLOCK); error = xfs_sync_fsdata(mp, SYNC_TRYLOCK); @@ -690,16 +684,17 @@ void xfs_inode_set_reclaim_tag( xfs_inode_t *ip) { - xfs_mount_t *mp = ip->i_mount; - xfs_perag_t *pag = xfs_get_perag(mp, ip->i_ino); + struct xfs_mount *mp = ip->i_mount; + struct xfs_perag *pag; + pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); read_lock(&pag->pag_ici_lock); spin_lock(&ip->i_flags_lock); __xfs_inode_set_reclaim_tag(pag, ip); __xfs_iflags_set(ip, XFS_IRECLAIMABLE); spin_unlock(&ip->i_flags_lock); read_unlock(&pag->pag_ici_lock); - xfs_put_perag(mp, pag); + xfs_perag_put(pag); } void @@ -712,12 +707,64 @@ __xfs_inode_clear_reclaim_tag( XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG); } +/* + * Inodes in different states need to be treated differently, and the return + * value of xfs_iflush is not sufficient to get this right. The following table + * lists the inode states and the reclaim actions necessary for non-blocking + * reclaim: + * + * + * inode state iflush ret required action + * --------------- ---------- --------------- + * bad - reclaim + * shutdown EIO unpin and reclaim + * clean, unpinned 0 reclaim + * stale, unpinned 0 reclaim + * clean, pinned(*) 0 requeue + * stale, pinned EAGAIN requeue + * dirty, delwri ok 0 requeue + * dirty, delwri blocked EAGAIN requeue + * dirty, sync flush 0 reclaim + * + * (*) dgc: I don't think the clean, pinned state is possible but it gets + * handled anyway given the order of checks implemented. + * + * As can be seen from the table, the return value of xfs_iflush() is not + * sufficient to correctly decide the reclaim action here. The checks in + * xfs_iflush() might look like duplicates, but they are not. + * + * Also, because we get the flush lock first, we know that any inode that has + * been flushed delwri has had the flush completed by the time we check that + * the inode is clean. The clean inode check needs to be done before flushing + * the inode delwri otherwise we would loop forever requeuing clean inodes as + * we cannot tell apart a successful delwri flush and a clean inode from the + * return value of xfs_iflush(). + * + * Note that because the inode is flushed delayed write by background + * writeback, the flush lock may already be held here and waiting on it can + * result in very long latencies. Hence for sync reclaims, where we wait on the + * flush lock, the caller should push out delayed write inodes first before + * trying to reclaim them to minimise the amount of time spent waiting. For + * background relaim, we just requeue the inode for the next pass. + * + * Hence the order of actions after gaining the locks should be: + * bad => reclaim + * shutdown => unpin and reclaim + * pinned, delwri => requeue + * pinned, sync => unpin + * stale => reclaim + * clean => reclaim + * dirty, delwri => flush and requeue + * dirty, sync => flush, wait and reclaim + */ STATIC int xfs_reclaim_inode( struct xfs_inode *ip, struct xfs_perag *pag, int sync_mode) { + int error = 0; + /* * The radix tree lock here protects a thread in xfs_iget from racing * with us starting reclaim on the inode. Once we have the @@ -735,33 +782,70 @@ xfs_reclaim_inode( spin_unlock(&ip->i_flags_lock); write_unlock(&pag->pag_ici_lock); - /* - * If the inode is still dirty, then flush it out. If the inode - * is not in the AIL, then it will be OK to flush it delwri as - * long as xfs_iflush() does not keep any references to the inode. - * We leave that decision up to xfs_iflush() since it has the - * knowledge of whether it's OK to simply do a delwri flush of - * the inode or whether we need to wait until the inode is - * pulled from the AIL. - * We get the flush lock regardless, though, just to make sure - * we don't free it while it is being flushed. - */ xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_iflock(ip); + if (!xfs_iflock_nowait(ip)) { + if (!(sync_mode & SYNC_WAIT)) + goto out; + xfs_iflock(ip); + } + + if (is_bad_inode(VFS_I(ip))) + goto reclaim; + if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { + xfs_iunpin_wait(ip); + goto reclaim; + } + if (xfs_ipincount(ip)) { + if (!(sync_mode & SYNC_WAIT)) { + xfs_ifunlock(ip); + goto out; + } + xfs_iunpin_wait(ip); + } + if (xfs_iflags_test(ip, XFS_ISTALE)) + goto reclaim; + if (xfs_inode_clean(ip)) + goto reclaim; + + /* Now we have an inode that needs flushing */ + error = xfs_iflush(ip, sync_mode); + if (sync_mode & SYNC_WAIT) { + xfs_iflock(ip); + goto reclaim; + } /* - * In the case of a forced shutdown we rely on xfs_iflush() to - * wait for the inode to be unpinned before returning an error. + * When we have to flush an inode but don't have SYNC_WAIT set, we + * flush the inode out using a delwri buffer and wait for the next + * call into reclaim to find it in a clean state instead of waiting for + * it now. We also don't return errors here - if the error is transient + * then the next reclaim pass will flush the inode, and if the error + * is permanent then the next sync reclaim will relcaim the inode and + * pass on the error. */ - if (!is_bad_inode(VFS_I(ip)) && xfs_iflush(ip, sync_mode) == 0) { - /* synchronize with xfs_iflush_done */ - xfs_iflock(ip); - xfs_ifunlock(ip); + if (error && !XFS_FORCED_SHUTDOWN(ip->i_mount)) { + xfs_fs_cmn_err(CE_WARN, ip->i_mount, + "inode 0x%llx background reclaim flush failed with %d", + (long long)ip->i_ino, error); } +out: + xfs_iflags_clear(ip, XFS_IRECLAIM); + xfs_iunlock(ip, XFS_ILOCK_EXCL); + /* + * We could return EAGAIN here to make reclaim rescan the inode tree in + * a short while. However, this just burns CPU time scanning the tree + * waiting for IO to complete and xfssyncd never goes back to the idle + * state. Instead, return 0 to let the next scheduled background reclaim + * attempt to reclaim the inode again. + */ + return 0; +reclaim: + xfs_ifunlock(ip); xfs_iunlock(ip, XFS_ILOCK_EXCL); xfs_ireclaim(ip); - return 0; + return error; + } int diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h index ea932b4..d480c34 100644 --- a/fs/xfs/linux-2.6/xfs_sync.h +++ b/fs/xfs/linux-2.6/xfs_sync.h @@ -37,7 +37,6 @@ void xfs_syncd_stop(struct xfs_mount *mp); int xfs_sync_attr(struct xfs_mount *mp, int flags); int xfs_sync_data(struct xfs_mount *mp, int flags); -int xfs_sync_fsdata(struct xfs_mount *mp, int flags); int xfs_quiesce_data(struct xfs_mount *mp); void xfs_quiesce_attr(struct xfs_mount *mp); diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h index c22a608..a4574dc 100644 --- a/fs/xfs/linux-2.6/xfs_trace.h +++ b/fs/xfs/linux-2.6/xfs_trace.h @@ -78,6 +78,33 @@ DECLARE_EVENT_CLASS(xfs_attr_list_class, ) ) +#define DEFINE_PERAG_REF_EVENT(name) \ +TRACE_EVENT(name, \ + TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, int refcount, \ + unsigned long caller_ip), \ + TP_ARGS(mp, agno, refcount, caller_ip), \ + TP_STRUCT__entry( \ + __field(dev_t, dev) \ + __field(xfs_agnumber_t, agno) \ + __field(int, refcount) \ + __field(unsigned long, caller_ip) \ + ), \ + TP_fast_assign( \ + __entry->dev = mp->m_super->s_dev; \ + __entry->agno = agno; \ + __entry->refcount = refcount; \ + __entry->caller_ip = caller_ip; \ + ), \ + TP_printk("dev %d:%d agno %u refcount %d caller %pf", \ + MAJOR(__entry->dev), MINOR(__entry->dev), \ + __entry->agno, \ + __entry->refcount, \ + (char *)__entry->caller_ip) \ +); + +DEFINE_PERAG_REF_EVENT(xfs_perag_get) +DEFINE_PERAG_REF_EVENT(xfs_perag_put) + #define DEFINE_ATTR_LIST_EVENT(name) \ DEFINE_EVENT(xfs_attr_list_class, name, \ TP_PROTO(struct xfs_attr_list_context *ctx), \ @@ -456,6 +483,7 @@ DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unlock); DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unlock_stale); DEFINE_BUF_ITEM_EVENT(xfs_buf_item_committed); DEFINE_BUF_ITEM_EVENT(xfs_buf_item_push); +DEFINE_BUF_ITEM_EVENT(xfs_buf_item_pushbuf); DEFINE_BUF_ITEM_EVENT(xfs_trans_get_buf); DEFINE_BUF_ITEM_EVENT(xfs_trans_get_buf_recur); DEFINE_BUF_ITEM_EVENT(xfs_trans_getsb); @@ -1414,6 +1442,59 @@ TRACE_EVENT(xfs_dir2_leafn_moveents, __entry->count) ); +#define XFS_SWAPEXT_INODES \ + { 0, "target" }, \ + { 1, "temp" } + +#define XFS_INODE_FORMAT_STR \ + { 0, "invalid" }, \ + { 1, "local" }, \ + { 2, "extent" }, \ + { 3, "btree" } + +DECLARE_EVENT_CLASS(xfs_swap_extent_class, + TP_PROTO(struct xfs_inode *ip, int which), + TP_ARGS(ip, which), + TP_STRUCT__entry( + __field(dev_t, dev) + __field(int, which) + __field(xfs_ino_t, ino) + __field(int, format) + __field(int, nex) + __field(int, max_nex) + __field(int, broot_size) + __field(int, fork_off) + ), + TP_fast_assign( + __entry->dev = VFS_I(ip)->i_sb->s_dev; + __entry->which = which; + __entry->ino = ip->i_ino; + __entry->format = ip->i_d.di_format; + __entry->nex = ip->i_d.di_nextents; + __entry->max_nex = ip->i_df.if_ext_max; + __entry->broot_size = ip->i_df.if_broot_bytes; + __entry->fork_off = XFS_IFORK_BOFF(ip); + ), + TP_printk("dev %d:%d ino 0x%llx (%s), %s format, num_extents %d, " + "Max in-fork extents %d, broot size %d, fork offset %d", + MAJOR(__entry->dev), MINOR(__entry->dev), + __entry->ino, + __print_symbolic(__entry->which, XFS_SWAPEXT_INODES), + __print_symbolic(__entry->format, XFS_INODE_FORMAT_STR), + __entry->nex, + __entry->max_nex, + __entry->broot_size, + __entry->fork_off) +) + +#define DEFINE_SWAPEXT_EVENT(name) \ +DEFINE_EVENT(xfs_swap_extent_class, name, \ + TP_PROTO(struct xfs_inode *ip, int which), \ + TP_ARGS(ip, which)) + +DEFINE_SWAPEXT_EVENT(xfs_swap_extent_before); +DEFINE_SWAPEXT_EVENT(xfs_swap_extent_after); + #endif /* _TRACE_XFS_H */ #undef TRACE_INCLUDE_PATH diff --git a/fs/xfs/linux-2.6/xfs_xattr.c b/fs/xfs/linux-2.6/xfs_xattr.c index 0b18788..fa01b9d 100644 --- a/fs/xfs/linux-2.6/xfs_xattr.c +++ b/fs/xfs/linux-2.6/xfs_xattr.c @@ -45,7 +45,7 @@ xfs_xattr_get(struct dentry *dentry, const char *name, value = NULL; } - error = -xfs_attr_get(ip, name, value, &asize, xflags); + error = -xfs_attr_get(ip, (unsigned char *)name, value, &asize, xflags); if (error) return error; return asize; @@ -67,8 +67,9 @@ xfs_xattr_set(struct dentry *dentry, const char *name, const void *value, xflags |= ATTR_REPLACE; if (!value) - return -xfs_attr_remove(ip, name, xflags); - return -xfs_attr_set(ip, name, (void *)value, size, xflags); + return -xfs_attr_remove(ip, (unsigned char *)name, xflags); + return -xfs_attr_set(ip, (unsigned char *)name, + (void *)value, size, xflags); } static struct xattr_handler xfs_xattr_user_handler = { @@ -124,8 +125,13 @@ static const char *xfs_xattr_prefix(int flags) } static int -xfs_xattr_put_listent(struct xfs_attr_list_context *context, int flags, - char *name, int namelen, int valuelen, char *value) +xfs_xattr_put_listent( + struct xfs_attr_list_context *context, + int flags, + unsigned char *name, + int namelen, + int valuelen, + unsigned char *value) { unsigned int prefix_len = xfs_xattr_prefix_len(flags); char *offset; @@ -148,7 +154,7 @@ xfs_xattr_put_listent(struct xfs_attr_list_context *context, int flags, offset = (char *)context->alist + context->count; strncpy(offset, xfs_xattr_prefix(flags), prefix_len); offset += prefix_len; - strncpy(offset, name, namelen); /* real name */ + strncpy(offset, (char *)name, namelen); /* real name */ offset += namelen; *offset = '\0'; context->count += prefix_len + namelen + 1; @@ -156,8 +162,13 @@ xfs_xattr_put_listent(struct xfs_attr_list_context *context, int flags, } static int -xfs_xattr_put_listent_sizes(struct xfs_attr_list_context *context, int flags, - char *name, int namelen, int valuelen, char *value) +xfs_xattr_put_listent_sizes( + struct xfs_attr_list_context *context, + int flags, + unsigned char *name, + int namelen, + int valuelen, + unsigned char *value) { context->count += xfs_xattr_prefix_len(flags) + namelen + 1; return 0; diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c index d7c7eea..5f79dd7 100644 --- a/fs/xfs/quota/xfs_dquot.c +++ b/fs/xfs/quota/xfs_dquot.c @@ -1187,7 +1187,7 @@ xfs_qm_dqflush( * block, nada. */ if (!XFS_DQ_IS_DIRTY(dqp) || - (!(flags & XFS_QMOPT_SYNC) && atomic_read(&dqp->q_pincount) > 0)) { + (!(flags & SYNC_WAIT) && atomic_read(&dqp->q_pincount) > 0)) { xfs_dqfunlock(dqp); return 0; } @@ -1248,23 +1248,20 @@ xfs_qm_dqflush( */ if (XFS_BUF_ISPINNED(bp)) { trace_xfs_dqflush_force(dqp); - xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE); + xfs_log_force(mp, 0); } - if (flags & XFS_QMOPT_DELWRI) { - xfs_bdwrite(mp, bp); - } else if (flags & XFS_QMOPT_ASYNC) { - error = xfs_bawrite(mp, bp); - } else { + if (flags & SYNC_WAIT) error = xfs_bwrite(mp, bp); - } + else + xfs_bdwrite(mp, bp); trace_xfs_dqflush_done(dqp); /* * dqp is still locked, but caller is free to unlock it now. */ - return (error); + return error; } @@ -1445,7 +1442,7 @@ xfs_qm_dqpurge( * We don't care about getting disk errors here. We need * to purge this dquot anyway, so we go ahead regardless. */ - error = xfs_qm_dqflush(dqp, XFS_QMOPT_SYNC); + error = xfs_qm_dqflush(dqp, SYNC_WAIT); if (error) xfs_fs_cmn_err(CE_WARN, mp, "xfs_qm_dqpurge: dquot %p flush failed", dqp); @@ -1529,25 +1526,17 @@ xfs_qm_dqflock_pushbuf_wait( * the flush lock when the I/O completes. */ bp = xfs_incore(dqp->q_mount->m_ddev_targp, dqp->q_blkno, - XFS_QI_DQCHUNKLEN(dqp->q_mount), - XFS_INCORE_TRYLOCK); - if (bp != NULL) { - if (XFS_BUF_ISDELAYWRITE(bp)) { - int error; - if (XFS_BUF_ISPINNED(bp)) { - xfs_log_force(dqp->q_mount, - (xfs_lsn_t)0, - XFS_LOG_FORCE); - } - error = xfs_bawrite(dqp->q_mount, bp); - if (error) - xfs_fs_cmn_err(CE_WARN, dqp->q_mount, - "xfs_qm_dqflock_pushbuf_wait: " - "pushbuf error %d on dqp %p, bp %p", - error, dqp, bp); - } else { - xfs_buf_relse(bp); - } + XFS_QI_DQCHUNKLEN(dqp->q_mount), XBF_TRYLOCK); + if (!bp) + goto out_lock; + + if (XFS_BUF_ISDELAYWRITE(bp)) { + if (XFS_BUF_ISPINNED(bp)) + xfs_log_force(dqp->q_mount, 0); + xfs_buf_delwri_promote(bp); + wake_up_process(bp->b_target->bt_task); } + xfs_buf_relse(bp); +out_lock: xfs_dqflock(dqp); } diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/quota/xfs_dquot_item.c index d0d4a9a..4e4ee9a 100644 --- a/fs/xfs/quota/xfs_dquot_item.c +++ b/fs/xfs/quota/xfs_dquot_item.c @@ -74,11 +74,11 @@ xfs_qm_dquot_logitem_format( logvec->i_addr = (xfs_caddr_t)&logitem->qli_format; logvec->i_len = sizeof(xfs_dq_logformat_t); - XLOG_VEC_SET_TYPE(logvec, XLOG_REG_TYPE_QFORMAT); + logvec->i_type = XLOG_REG_TYPE_QFORMAT; logvec++; logvec->i_addr = (xfs_caddr_t)&logitem->qli_dquot->q_core; logvec->i_len = sizeof(xfs_disk_dquot_t); - XLOG_VEC_SET_TYPE(logvec, XLOG_REG_TYPE_DQUOT); + logvec->i_type = XLOG_REG_TYPE_DQUOT; ASSERT(2 == logitem->qli_item.li_desc->lid_size); logitem->qli_format.qlf_size = 2; @@ -153,7 +153,7 @@ xfs_qm_dquot_logitem_push( * lock without sleeping, then there must not have been * anyone in the process of flushing the dquot. */ - error = xfs_qm_dqflush(dqp, XFS_QMOPT_DELWRI); + error = xfs_qm_dqflush(dqp, 0); if (error) xfs_fs_cmn_err(CE_WARN, dqp->q_mount, "xfs_qm_dquot_logitem_push: push error %d on dqp %p", @@ -190,7 +190,7 @@ xfs_qm_dqunpin_wait( /* * Give the log a push so we don't wait here too long. */ - xfs_log_force(dqp->q_mount, (xfs_lsn_t)0, XFS_LOG_FORCE); + xfs_log_force(dqp->q_mount, 0); wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0)); } @@ -212,68 +212,31 @@ xfs_qm_dquot_logitem_pushbuf( xfs_dquot_t *dqp; xfs_mount_t *mp; xfs_buf_t *bp; - uint dopush; dqp = qip->qli_dquot; ASSERT(XFS_DQ_IS_LOCKED(dqp)); /* - * The qli_pushbuf_flag keeps others from - * trying to duplicate our effort. - */ - ASSERT(qip->qli_pushbuf_flag != 0); - ASSERT(qip->qli_push_owner == current_pid()); - - /* * If flushlock isn't locked anymore, chances are that the * inode flush completed and the inode was taken off the AIL. * So, just get out. */ if (completion_done(&dqp->q_flush) || ((qip->qli_item.li_flags & XFS_LI_IN_AIL) == 0)) { - qip->qli_pushbuf_flag = 0; xfs_dqunlock(dqp); return; } mp = dqp->q_mount; bp = xfs_incore(mp->m_ddev_targp, qip->qli_format.qlf_blkno, - XFS_QI_DQCHUNKLEN(mp), - XFS_INCORE_TRYLOCK); - if (bp != NULL) { - if (XFS_BUF_ISDELAYWRITE(bp)) { - dopush = ((qip->qli_item.li_flags & XFS_LI_IN_AIL) && - !completion_done(&dqp->q_flush)); - qip->qli_pushbuf_flag = 0; - xfs_dqunlock(dqp); - - if (XFS_BUF_ISPINNED(bp)) { - xfs_log_force(mp, (xfs_lsn_t)0, - XFS_LOG_FORCE); - } - if (dopush) { - int error; -#ifdef XFSRACEDEBUG - delay_for_intr(); - delay(300); -#endif - error = xfs_bawrite(mp, bp); - if (error) - xfs_fs_cmn_err(CE_WARN, mp, - "xfs_qm_dquot_logitem_pushbuf: pushbuf error %d on qip %p, bp %p", - error, qip, bp); - } else { - xfs_buf_relse(bp); - } - } else { - qip->qli_pushbuf_flag = 0; - xfs_dqunlock(dqp); - xfs_buf_relse(bp); - } + XFS_QI_DQCHUNKLEN(mp), XBF_TRYLOCK); + xfs_dqunlock(dqp); + if (!bp) return; - } + if (XFS_BUF_ISDELAYWRITE(bp)) + xfs_buf_delwri_promote(bp); + xfs_buf_relse(bp); + return; - qip->qli_pushbuf_flag = 0; - xfs_dqunlock(dqp); } /* @@ -291,50 +254,24 @@ xfs_qm_dquot_logitem_trylock( xfs_dq_logitem_t *qip) { xfs_dquot_t *dqp; - uint retval; dqp = qip->qli_dquot; if (atomic_read(&dqp->q_pincount) > 0) - return (XFS_ITEM_PINNED); + return XFS_ITEM_PINNED; if (! xfs_qm_dqlock_nowait(dqp)) - return (XFS_ITEM_LOCKED); + return XFS_ITEM_LOCKED; - retval = XFS_ITEM_SUCCESS; if (!xfs_dqflock_nowait(dqp)) { /* - * The dquot is already being flushed. It may have been - * flushed delayed write, however, and we don't want to - * get stuck waiting for that to complete. So, we want to check - * to see if we can lock the dquot's buffer without sleeping. - * If we can and it is marked for delayed write, then we - * hold it and send it out from the push routine. We don't - * want to do that now since we might sleep in the device - * strategy routine. We also don't want to grab the buffer lock - * here because we'd like not to call into the buffer cache - * while holding the AIL lock. - * Make sure to only return PUSHBUF if we set pushbuf_flag - * ourselves. If someone else is doing it then we don't - * want to go to the push routine and duplicate their efforts. + * dquot has already been flushed to the backing buffer, + * leave it locked, pushbuf routine will unlock it. */ - if (qip->qli_pushbuf_flag == 0) { - qip->qli_pushbuf_flag = 1; - ASSERT(qip->qli_format.qlf_blkno == dqp->q_blkno); -#ifdef DEBUG - qip->qli_push_owner = current_pid(); -#endif - /* - * The dquot is left locked. - */ - retval = XFS_ITEM_PUSHBUF; - } else { - retval = XFS_ITEM_FLUSHING; - xfs_dqunlock_nonotify(dqp); - } + return XFS_ITEM_PUSHBUF; } ASSERT(qip->qli_item.li_flags & XFS_LI_IN_AIL); - return (retval); + return XFS_ITEM_SUCCESS; } @@ -467,7 +404,7 @@ xfs_qm_qoff_logitem_format(xfs_qoff_logitem_t *qf, log_vector->i_addr = (xfs_caddr_t)&(qf->qql_format); log_vector->i_len = sizeof(xfs_qoff_logitem_t); - XLOG_VEC_SET_TYPE(log_vector, XLOG_REG_TYPE_QUOTAOFF); + log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF; qf->qql_format.qf_size = 1; } diff --git a/fs/xfs/quota/xfs_dquot_item.h b/fs/xfs/quota/xfs_dquot_item.h index 5a63253..5acae2a 100644 --- a/fs/xfs/quota/xfs_dquot_item.h +++ b/fs/xfs/quota/xfs_dquot_item.h @@ -27,10 +27,6 @@ typedef struct xfs_dq_logitem { xfs_log_item_t qli_item; /* common portion */ struct xfs_dquot *qli_dquot; /* dquot ptr */ xfs_lsn_t qli_flush_lsn; /* lsn at last flush */ - unsigned short qli_pushbuf_flag; /* 1 bit used in push_ail */ -#ifdef DEBUG - uint64_t qli_push_owner; -#endif xfs_dq_logformat_t qli_format; /* logged structure */ } xfs_dq_logitem_t; diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c index 9e627a8..417e61e 100644 --- a/fs/xfs/quota/xfs_qm.c +++ b/fs/xfs/quota/xfs_qm.c @@ -118,9 +118,14 @@ xfs_Gqm_init(void) */ udqhash = kmem_zalloc_greedy(&hsize, XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t), - XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t), - KM_SLEEP | KM_MAYFAIL | KM_LARGE); - gdqhash = kmem_zalloc(hsize, KM_SLEEP | KM_LARGE); + XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t)); + if (!udqhash) + goto out; + + gdqhash = kmem_zalloc_large(hsize); + if (!gdqhash) + goto out_free_udqhash; + hsize /= sizeof(xfs_dqhash_t); ndquot = hsize << 8; @@ -170,6 +175,11 @@ xfs_Gqm_init(void) mutex_init(&qcheck_lock); #endif return xqm; + + out_free_udqhash: + kmem_free_large(udqhash); + out: + return NULL; } /* @@ -189,8 +199,8 @@ xfs_qm_destroy( xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i])); xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i])); } - kmem_free(xqm->qm_usr_dqhtable); - kmem_free(xqm->qm_grp_dqhtable); + kmem_free_large(xqm->qm_usr_dqhtable); + kmem_free_large(xqm->qm_grp_dqhtable); xqm->qm_usr_dqhtable = NULL; xqm->qm_grp_dqhtable = NULL; xqm->qm_dqhashmask = 0; @@ -219,8 +229,12 @@ xfs_qm_hold_quotafs_ref( */ mutex_lock(&xfs_Gqm_lock); - if (xfs_Gqm == NULL) + if (!xfs_Gqm) { xfs_Gqm = xfs_Gqm_init(); + if (!xfs_Gqm) + return ENOMEM; + } + /* * We can keep a list of all filesystems with quotas mounted for * debugging and statistical purposes, but ... @@ -436,7 +450,7 @@ xfs_qm_unmount_quotas( STATIC int xfs_qm_dqflush_all( xfs_mount_t *mp, - int flags) + int sync_mode) { int recl; xfs_dquot_t *dqp; @@ -472,7 +486,7 @@ again: * across a disk write. */ xfs_qm_mplist_unlock(mp); - error = xfs_qm_dqflush(dqp, flags); + error = xfs_qm_dqflush(dqp, sync_mode); xfs_dqunlock(dqp); if (error) return error; @@ -912,13 +926,11 @@ xfs_qm_sync( { int recl, restarts; xfs_dquot_t *dqp; - uint flush_flags; int error; if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp)) return 0; - flush_flags = (flags & SYNC_WAIT) ? XFS_QMOPT_SYNC : XFS_QMOPT_DELWRI; restarts = 0; again: @@ -978,7 +990,7 @@ xfs_qm_sync( * across a disk write */ xfs_qm_mplist_unlock(mp); - error = xfs_qm_dqflush(dqp, flush_flags); + error = xfs_qm_dqflush(dqp, flags); xfs_dqunlock(dqp); if (error && XFS_FORCED_SHUTDOWN(mp)) return 0; /* Need to prevent umount failure */ @@ -1782,7 +1794,7 @@ xfs_qm_quotacheck( * successfully. */ if (!error) - error = xfs_qm_dqflush_all(mp, XFS_QMOPT_DELWRI); + error = xfs_qm_dqflush_all(mp, 0); /* * We can get this error if we couldn't do a dquot allocation inside @@ -2004,7 +2016,7 @@ xfs_qm_shake_freelist( * We flush it delayed write, so don't bother * releasing the mplock. */ - error = xfs_qm_dqflush(dqp, XFS_QMOPT_DELWRI); + error = xfs_qm_dqflush(dqp, 0); if (error) { xfs_fs_cmn_err(CE_WARN, dqp->q_mount, "xfs_qm_dqflush_all: dquot %p flush failed", dqp); @@ -2187,7 +2199,7 @@ xfs_qm_dqreclaim_one(void) * We flush it delayed write, so don't bother * releasing the freelist lock. */ - error = xfs_qm_dqflush(dqp, XFS_QMOPT_DELWRI); + error = xfs_qm_dqflush(dqp, 0); if (error) { xfs_fs_cmn_err(CE_WARN, dqp->q_mount, "xfs_qm_dqreclaim: dquot %p flush failed", dqp); diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c index a534663..97b410c 100644 --- a/fs/xfs/quota/xfs_qm_bhv.c +++ b/fs/xfs/quota/xfs_qm_bhv.c @@ -59,7 +59,7 @@ xfs_fill_statvfs_from_dquot( be64_to_cpu(dp->d_blk_hardlimit); if (limit && statp->f_blocks > limit) { statp->f_blocks = limit; - statp->f_bfree = + statp->f_bfree = statp->f_bavail = (statp->f_blocks > be64_to_cpu(dp->d_bcount)) ? (statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0; } diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c index 873e07e..5d0ee8d 100644 --- a/fs/xfs/quota/xfs_qm_syscalls.c +++ b/fs/xfs/quota/xfs_qm_syscalls.c @@ -1192,9 +1192,9 @@ xfs_qm_internalqcheck( if (! XFS_IS_QUOTA_ON(mp)) return XFS_ERROR(ESRCH); - xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC); + xfs_log_force(mp, XFS_LOG_SYNC); XFS_bflush(mp->m_ddev_targp); - xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC); + xfs_log_force(mp, XFS_LOG_SYNC); XFS_bflush(mp->m_ddev_targp); mutex_lock(&qcheck_lock); diff --git a/fs/xfs/quota/xfs_trans_dquot.c b/fs/xfs/quota/xfs_trans_dquot.c index 97ac964..c3ab75c 100644 --- a/fs/xfs/quota/xfs_trans_dquot.c +++ b/fs/xfs/quota/xfs_trans_dquot.c @@ -589,12 +589,18 @@ xfs_trans_unreserve_and_mod_dquots( } } -STATIC int -xfs_quota_error(uint flags) +STATIC void +xfs_quota_warn( + struct xfs_mount *mp, + struct xfs_dquot *dqp, + int type) { - if (flags & XFS_QMOPT_ENOSPC) - return ENOSPC; - return EDQUOT; + /* no warnings for project quotas - we just return ENOSPC later */ + if (dqp->dq_flags & XFS_DQ_PROJ) + return; + quota_send_warning((dqp->dq_flags & XFS_DQ_USER) ? USRQUOTA : GRPQUOTA, + be32_to_cpu(dqp->q_core.d_id), mp->m_super->s_dev, + type); } /* @@ -612,7 +618,6 @@ xfs_trans_dqresv( long ninos, uint flags) { - int error; xfs_qcnt_t hardlimit; xfs_qcnt_t softlimit; time_t timer; @@ -649,7 +654,6 @@ xfs_trans_dqresv( warnlimit = XFS_QI_RTBWARNLIMIT(dqp->q_mount); resbcountp = &dqp->q_res_rtbcount; } - error = 0; if ((flags & XFS_QMOPT_FORCE_RES) == 0 && dqp->q_core.d_id && @@ -667,18 +671,20 @@ xfs_trans_dqresv( * nblks. */ if (hardlimit > 0ULL && - (hardlimit <= nblks + *resbcountp)) { - error = xfs_quota_error(flags); + hardlimit <= nblks + *resbcountp) { + xfs_quota_warn(mp, dqp, QUOTA_NL_BHARDWARN); goto error_return; } - if (softlimit > 0ULL && - (softlimit <= nblks + *resbcountp)) { + softlimit <= nblks + *resbcountp) { if ((timer != 0 && get_seconds() > timer) || (warns != 0 && warns >= warnlimit)) { - error = xfs_quota_error(flags); + xfs_quota_warn(mp, dqp, + QUOTA_NL_BSOFTLONGWARN); goto error_return; } + + xfs_quota_warn(mp, dqp, QUOTA_NL_BSOFTWARN); } } if (ninos > 0) { @@ -692,15 +698,19 @@ xfs_trans_dqresv( softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit); if (!softlimit) softlimit = q->qi_isoftlimit; + if (hardlimit > 0ULL && count >= hardlimit) { - error = xfs_quota_error(flags); + xfs_quota_warn(mp, dqp, QUOTA_NL_IHARDWARN); goto error_return; - } else if (softlimit > 0ULL && count >= softlimit) { - if ((timer != 0 && get_seconds() > timer) || + } + if (softlimit > 0ULL && count >= softlimit) { + if ((timer != 0 && get_seconds() > timer) || (warns != 0 && warns >= warnlimit)) { - error = xfs_quota_error(flags); + xfs_quota_warn(mp, dqp, + QUOTA_NL_ISOFTLONGWARN); goto error_return; } + xfs_quota_warn(mp, dqp, QUOTA_NL_ISOFTWARN); } } } @@ -736,9 +746,14 @@ xfs_trans_dqresv( ASSERT(dqp->q_res_rtbcount >= be64_to_cpu(dqp->q_core.d_rtbcount)); ASSERT(dqp->q_res_icount >= be64_to_cpu(dqp->q_core.d_icount)); + xfs_dqunlock(dqp); + return 0; + error_return: xfs_dqunlock(dqp); - return error; + if (flags & XFS_QMOPT_ENOSPC) + return ENOSPC; + return EDQUOT; } diff --git a/fs/xfs/xfs_acl.h b/fs/xfs/xfs_acl.h index 00fd357c..d13eeba 100644 --- a/fs/xfs/xfs_acl.h +++ b/fs/xfs/xfs_acl.h @@ -36,8 +36,8 @@ struct xfs_acl { }; /* On-disk XFS extended attribute names */ -#define SGI_ACL_FILE "SGI_ACL_FILE" -#define SGI_ACL_DEFAULT "SGI_ACL_DEFAULT" +#define SGI_ACL_FILE (unsigned char *)"SGI_ACL_FILE" +#define SGI_ACL_DEFAULT (unsigned char *)"SGI_ACL_DEFAULT" #define SGI_ACL_FILE_SIZE (sizeof(SGI_ACL_FILE)-1) #define SGI_ACL_DEFAULT_SIZE (sizeof(SGI_ACL_DEFAULT)-1) diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h index 6702bd8..b1a5a1f 100644 --- a/fs/xfs/xfs_ag.h +++ b/fs/xfs/xfs_ag.h @@ -187,17 +187,13 @@ typedef struct xfs_perag_busy { /* * Per-ag incore structure, copies of information in agf and agi, * to improve the performance of allocation group selection. - * - * pick sizes which fit in allocation buckets well */ -#if (BITS_PER_LONG == 32) -#define XFS_PAGB_NUM_SLOTS 84 -#elif (BITS_PER_LONG == 64) #define XFS_PAGB_NUM_SLOTS 128 -#endif -typedef struct xfs_perag -{ +typedef struct xfs_perag { + struct xfs_mount *pag_mount; /* owner filesystem */ + xfs_agnumber_t pag_agno; /* AG this structure belongs to */ + atomic_t pag_ref; /* perag reference count */ char pagf_init; /* this agf's entry is initialized */ char pagi_init; /* this agi's entry is initialized */ char pagf_metadata; /* the agf is preferred to be metadata */ @@ -210,8 +206,6 @@ typedef struct xfs_perag __uint32_t pagf_btreeblks; /* # of blocks held in AGF btrees */ xfs_agino_t pagi_freecount; /* number of free inodes */ xfs_agino_t pagi_count; /* number of allocated inodes */ - int pagb_count; /* pagb slots in use */ - xfs_perag_busy_t *pagb_list; /* unstable blocks */ /* * Inode allocation search lookup optimisation. @@ -230,6 +224,8 @@ typedef struct xfs_perag rwlock_t pag_ici_lock; /* incore inode lock */ struct radix_tree_root pag_ici_root; /* incore inode cache root */ #endif + int pagb_count; /* pagb slots in use */ + xfs_perag_busy_t pagb_list[XFS_PAGB_NUM_SLOTS]; /* unstable blocks */ } xfs_perag_t; /* diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c index 275b1f4..94cddbf 100644 --- a/fs/xfs/xfs_alloc.c +++ b/fs/xfs/xfs_alloc.c @@ -1662,11 +1662,13 @@ xfs_free_ag_extent( xfs_agf_t *agf; xfs_perag_t *pag; /* per allocation group data */ + pag = xfs_perag_get(mp, agno); + pag->pagf_freeblks += len; + xfs_perag_put(pag); + agf = XFS_BUF_TO_AGF(agbp); - pag = &mp->m_perag[agno]; be32_add_cpu(&agf->agf_freeblks, len); xfs_trans_agblocks_delta(tp, len); - pag->pagf_freeblks += len; XFS_WANT_CORRUPTED_GOTO( be32_to_cpu(agf->agf_freeblks) <= be32_to_cpu(agf->agf_length), @@ -1969,10 +1971,12 @@ xfs_alloc_get_freelist( xfs_trans_brelse(tp, agflbp); if (be32_to_cpu(agf->agf_flfirst) == XFS_AGFL_SIZE(mp)) agf->agf_flfirst = 0; - pag = &mp->m_perag[be32_to_cpu(agf->agf_seqno)]; + + pag = xfs_perag_get(mp, be32_to_cpu(agf->agf_seqno)); be32_add_cpu(&agf->agf_flcount, -1); xfs_trans_agflist_delta(tp, -1); pag->pagf_flcount--; + xfs_perag_put(pag); logflags = XFS_AGF_FLFIRST | XFS_AGF_FLCOUNT; if (btreeblk) { @@ -2078,7 +2082,8 @@ xfs_alloc_put_freelist( be32_add_cpu(&agf->agf_fllast, 1); if (be32_to_cpu(agf->agf_fllast) == XFS_AGFL_SIZE(mp)) agf->agf_fllast = 0; - pag = &mp->m_perag[be32_to_cpu(agf->agf_seqno)]; + + pag = xfs_perag_get(mp, be32_to_cpu(agf->agf_seqno)); be32_add_cpu(&agf->agf_flcount, 1); xfs_trans_agflist_delta(tp, 1); pag->pagf_flcount++; @@ -2089,6 +2094,7 @@ xfs_alloc_put_freelist( pag->pagf_btreeblks--; logflags |= XFS_AGF_BTREEBLKS; } + xfs_perag_put(pag); xfs_alloc_log_agf(tp, agbp, logflags); @@ -2152,7 +2158,6 @@ xfs_read_agf( xfs_trans_brelse(tp, *bpp); return XFS_ERROR(EFSCORRUPTED); } - XFS_BUF_SET_VTYPE_REF(*bpp, B_FS_AGF, XFS_AGF_REF); return 0; } @@ -2175,7 +2180,7 @@ xfs_alloc_read_agf( ASSERT(agno != NULLAGNUMBER); error = xfs_read_agf(mp, tp, agno, - (flags & XFS_ALLOC_FLAG_TRYLOCK) ? XFS_BUF_TRYLOCK : 0, + (flags & XFS_ALLOC_FLAG_TRYLOCK) ? XBF_TRYLOCK : 0, bpp); if (error) return error; @@ -2184,7 +2189,7 @@ xfs_alloc_read_agf( ASSERT(!XFS_BUF_GETERROR(*bpp)); agf = XFS_BUF_TO_AGF(*bpp); - pag = &mp->m_perag[agno]; + pag = xfs_perag_get(mp, agno); if (!pag->pagf_init) { pag->pagf_freeblks = be32_to_cpu(agf->agf_freeblks); pag->pagf_btreeblks = be32_to_cpu(agf->agf_btreeblks); @@ -2195,8 +2200,8 @@ xfs_alloc_read_agf( pag->pagf_levels[XFS_BTNUM_CNTi] = be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNTi]); spin_lock_init(&pag->pagb_lock); - pag->pagb_list = kmem_zalloc(XFS_PAGB_NUM_SLOTS * - sizeof(xfs_perag_busy_t), KM_SLEEP); + pag->pagb_count = 0; + memset(pag->pagb_list, 0, sizeof(pag->pagb_list)); pag->pagf_init = 1; } #ifdef DEBUG @@ -2211,6 +2216,7 @@ xfs_alloc_read_agf( be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNTi])); } #endif + xfs_perag_put(pag); return 0; } @@ -2270,8 +2276,7 @@ xfs_alloc_vextent( * These three force us into a single a.g. */ args->agno = XFS_FSB_TO_AGNO(mp, args->fsbno); - down_read(&mp->m_peraglock); - args->pag = &mp->m_perag[args->agno]; + args->pag = xfs_perag_get(mp, args->agno); args->minleft = 0; error = xfs_alloc_fix_freelist(args, 0); args->minleft = minleft; @@ -2280,14 +2285,12 @@ xfs_alloc_vextent( goto error0; } if (!args->agbp) { - up_read(&mp->m_peraglock); trace_xfs_alloc_vextent_noagbp(args); break; } args->agbno = XFS_FSB_TO_AGBNO(mp, args->fsbno); if ((error = xfs_alloc_ag_vextent(args))) goto error0; - up_read(&mp->m_peraglock); break; case XFS_ALLOCTYPE_START_BNO: /* @@ -2339,9 +2342,8 @@ xfs_alloc_vextent( * Loop over allocation groups twice; first time with * trylock set, second time without. */ - down_read(&mp->m_peraglock); for (;;) { - args->pag = &mp->m_perag[args->agno]; + args->pag = xfs_perag_get(mp, args->agno); if (no_min) args->minleft = 0; error = xfs_alloc_fix_freelist(args, flags); args->minleft = minleft; @@ -2400,8 +2402,8 @@ xfs_alloc_vextent( } } } + xfs_perag_put(args->pag); } - up_read(&mp->m_peraglock); if (bump_rotor || (type == XFS_ALLOCTYPE_ANY_AG)) { if (args->agno == sagno) mp->m_agfrotor = (mp->m_agfrotor + 1) % @@ -2427,9 +2429,10 @@ xfs_alloc_vextent( args->len); #endif } + xfs_perag_put(args->pag); return 0; error0: - up_read(&mp->m_peraglock); + xfs_perag_put(args->pag); return error; } @@ -2454,8 +2457,7 @@ xfs_free_extent( args.agno = XFS_FSB_TO_AGNO(args.mp, bno); ASSERT(args.agno < args.mp->m_sb.sb_agcount); args.agbno = XFS_FSB_TO_AGBNO(args.mp, bno); - down_read(&args.mp->m_peraglock); - args.pag = &args.mp->m_perag[args.agno]; + args.pag = xfs_perag_get(args.mp, args.agno); if ((error = xfs_alloc_fix_freelist(&args, XFS_ALLOC_FLAG_FREEING))) goto error0; #ifdef DEBUG @@ -2465,7 +2467,7 @@ xfs_free_extent( #endif error = xfs_free_ag_extent(tp, args.agbp, args.agno, args.agbno, len, 0); error0: - up_read(&args.mp->m_peraglock); + xfs_perag_put(args.pag); return error; } @@ -2486,15 +2488,15 @@ xfs_alloc_mark_busy(xfs_trans_t *tp, xfs_agblock_t bno, xfs_extlen_t len) { - xfs_mount_t *mp; xfs_perag_busy_t *bsy; + struct xfs_perag *pag; int n; - mp = tp->t_mountp; - spin_lock(&mp->m_perag[agno].pagb_lock); + pag = xfs_perag_get(tp->t_mountp, agno); + spin_lock(&pag->pagb_lock); /* search pagb_list for an open slot */ - for (bsy = mp->m_perag[agno].pagb_list, n = 0; + for (bsy = pag->pagb_list, n = 0; n < XFS_PAGB_NUM_SLOTS; bsy++, n++) { if (bsy->busy_tp == NULL) { @@ -2502,11 +2504,11 @@ xfs_alloc_mark_busy(xfs_trans_t *tp, } } - trace_xfs_alloc_busy(mp, agno, bno, len, n); + trace_xfs_alloc_busy(tp->t_mountp, agno, bno, len, n); if (n < XFS_PAGB_NUM_SLOTS) { - bsy = &mp->m_perag[agno].pagb_list[n]; - mp->m_perag[agno].pagb_count++; + bsy = &pag->pagb_list[n]; + pag->pagb_count++; bsy->busy_start = bno; bsy->busy_length = len; bsy->busy_tp = tp; @@ -2521,7 +2523,8 @@ xfs_alloc_mark_busy(xfs_trans_t *tp, xfs_trans_set_sync(tp); } - spin_unlock(&mp->m_perag[agno].pagb_lock); + spin_unlock(&pag->pagb_lock); + xfs_perag_put(pag); } void @@ -2529,24 +2532,23 @@ xfs_alloc_clear_busy(xfs_trans_t *tp, xfs_agnumber_t agno, int idx) { - xfs_mount_t *mp; + struct xfs_perag *pag; xfs_perag_busy_t *list; - mp = tp->t_mountp; - - spin_lock(&mp->m_perag[agno].pagb_lock); - list = mp->m_perag[agno].pagb_list; - ASSERT(idx < XFS_PAGB_NUM_SLOTS); + pag = xfs_perag_get(tp->t_mountp, agno); + spin_lock(&pag->pagb_lock); + list = pag->pagb_list; - trace_xfs_alloc_unbusy(mp, agno, idx, list[idx].busy_tp == tp); + trace_xfs_alloc_unbusy(tp->t_mountp, agno, idx, list[idx].busy_tp == tp); if (list[idx].busy_tp == tp) { list[idx].busy_tp = NULL; - mp->m_perag[agno].pagb_count--; + pag->pagb_count--; } - spin_unlock(&mp->m_perag[agno].pagb_lock); + spin_unlock(&pag->pagb_lock); + xfs_perag_put(pag); } @@ -2560,17 +2562,15 @@ xfs_alloc_search_busy(xfs_trans_t *tp, xfs_agblock_t bno, xfs_extlen_t len) { - xfs_mount_t *mp; + struct xfs_perag *pag; xfs_perag_busy_t *bsy; xfs_agblock_t uend, bend; xfs_lsn_t lsn = 0; int cnt; - mp = tp->t_mountp; - - spin_lock(&mp->m_perag[agno].pagb_lock); - - uend = bno + len - 1; + pag = xfs_perag_get(tp->t_mountp, agno); + spin_lock(&pag->pagb_lock); + cnt = pag->pagb_count; /* * search pagb_list for this slot, skipping open slots. We have to @@ -2578,8 +2578,9 @@ xfs_alloc_search_busy(xfs_trans_t *tp, * we have to get the most recent LSN for the log force to push out * all the transactions that span the range. */ - for (cnt = 0; cnt < mp->m_perag[agno].pagb_count; cnt++) { - bsy = &mp->m_perag[agno].pagb_list[cnt]; + uend = bno + len - 1; + for (cnt = 0; cnt < pag->pagb_count; cnt++) { + bsy = &pag->pagb_list[cnt]; if (!bsy->busy_tp) continue; @@ -2591,7 +2592,8 @@ xfs_alloc_search_busy(xfs_trans_t *tp, if (XFS_LSN_CMP(bsy->busy_tp->t_commit_lsn, lsn) > 0) lsn = bsy->busy_tp->t_commit_lsn; } - spin_unlock(&mp->m_perag[agno].pagb_lock); + spin_unlock(&pag->pagb_lock); + xfs_perag_put(pag); trace_xfs_alloc_busysearch(tp->t_mountp, agno, bno, len, lsn); /* @@ -2599,5 +2601,5 @@ xfs_alloc_search_busy(xfs_trans_t *tp, * transaction that freed the block */ if (lsn) - xfs_log_force(mp, lsn, XFS_LOG_FORCE|XFS_LOG_SYNC); + xfs_log_force_lsn(tp->t_mountp, lsn, XFS_LOG_SYNC); } diff --git a/fs/xfs/xfs_alloc_btree.c b/fs/xfs/xfs_alloc_btree.c index adbd914..b726e10 100644 --- a/fs/xfs/xfs_alloc_btree.c +++ b/fs/xfs/xfs_alloc_btree.c @@ -61,12 +61,14 @@ xfs_allocbt_set_root( struct xfs_agf *agf = XFS_BUF_TO_AGF(agbp); xfs_agnumber_t seqno = be32_to_cpu(agf->agf_seqno); int btnum = cur->bc_btnum; + struct xfs_perag *pag = xfs_perag_get(cur->bc_mp, seqno); ASSERT(ptr->s != 0); agf->agf_roots[btnum] = ptr->s; be32_add_cpu(&agf->agf_levels[btnum], inc); - cur->bc_mp->m_perag[seqno].pagf_levels[btnum] += inc; + pag->pagf_levels[btnum] += inc; + xfs_perag_put(pag); xfs_alloc_log_agf(cur->bc_tp, agbp, XFS_AGF_ROOTS | XFS_AGF_LEVELS); } @@ -150,6 +152,7 @@ xfs_allocbt_update_lastrec( { struct xfs_agf *agf = XFS_BUF_TO_AGF(cur->bc_private.a.agbp); xfs_agnumber_t seqno = be32_to_cpu(agf->agf_seqno); + struct xfs_perag *pag; __be32 len; int numrecs; @@ -193,7 +196,9 @@ xfs_allocbt_update_lastrec( } agf->agf_longest = len; - cur->bc_mp->m_perag[seqno].pagf_longest = be32_to_cpu(len); + pag = xfs_perag_get(cur->bc_mp, seqno); + pag->pagf_longest = be32_to_cpu(len); + xfs_perag_put(pag); xfs_alloc_log_agf(cur->bc_tp, cur->bc_private.a.agbp, XFS_AGF_LONGEST); } diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c index e953b6cf..b9c196a 100644 --- a/fs/xfs/xfs_attr.c +++ b/fs/xfs/xfs_attr.c @@ -93,12 +93,12 @@ STATIC int xfs_attr_rmtval_remove(xfs_da_args_t *args); STATIC int xfs_attr_name_to_xname( struct xfs_name *xname, - const char *aname) + const unsigned char *aname) { if (!aname) return EINVAL; xname->name = aname; - xname->len = strlen(aname); + xname->len = strlen((char *)aname); if (xname->len >= MAXNAMELEN) return EFAULT; /* match IRIX behaviour */ @@ -124,7 +124,7 @@ STATIC int xfs_attr_get_int( struct xfs_inode *ip, struct xfs_name *name, - char *value, + unsigned char *value, int *valuelenp, int flags) { @@ -171,8 +171,8 @@ xfs_attr_get_int( int xfs_attr_get( xfs_inode_t *ip, - const char *name, - char *value, + const unsigned char *name, + unsigned char *value, int *valuelenp, int flags) { @@ -197,7 +197,7 @@ xfs_attr_get( /* * Calculate how many blocks we need for the new attribute, */ -int +STATIC int xfs_attr_calc_size( struct xfs_inode *ip, int namelen, @@ -235,8 +235,12 @@ xfs_attr_calc_size( } STATIC int -xfs_attr_set_int(xfs_inode_t *dp, struct xfs_name *name, - char *value, int valuelen, int flags) +xfs_attr_set_int( + struct xfs_inode *dp, + struct xfs_name *name, + unsigned char *value, + int valuelen, + int flags) { xfs_da_args_t args; xfs_fsblock_t firstblock; @@ -452,8 +456,8 @@ out: int xfs_attr_set( xfs_inode_t *dp, - const char *name, - char *value, + const unsigned char *name, + unsigned char *value, int valuelen, int flags) { @@ -600,7 +604,7 @@ out: int xfs_attr_remove( xfs_inode_t *dp, - const char *name, + const unsigned char *name, int flags) { int error; @@ -669,9 +673,13 @@ xfs_attr_list_int(xfs_attr_list_context_t *context) */ /*ARGSUSED*/ STATIC int -xfs_attr_put_listent(xfs_attr_list_context_t *context, int flags, - char *name, int namelen, - int valuelen, char *value) +xfs_attr_put_listent( + xfs_attr_list_context_t *context, + int flags, + unsigned char *name, + int namelen, + int valuelen, + unsigned char *value) { struct attrlist *alist = (struct attrlist *)context->alist; attrlist_ent_t *aep; @@ -1980,7 +1988,7 @@ xfs_attr_rmtval_get(xfs_da_args_t *args) xfs_bmbt_irec_t map[ATTR_RMTVALUE_MAPSIZE]; xfs_mount_t *mp; xfs_daddr_t dblkno; - xfs_caddr_t dst; + void *dst; xfs_buf_t *bp; int nmap, error, tmp, valuelen, blkcnt, i; xfs_dablk_t lblkno; @@ -2007,15 +2015,14 @@ xfs_attr_rmtval_get(xfs_da_args_t *args) dblkno = XFS_FSB_TO_DADDR(mp, map[i].br_startblock); blkcnt = XFS_FSB_TO_BB(mp, map[i].br_blockcount); error = xfs_read_buf(mp, mp->m_ddev_targp, dblkno, - blkcnt, - XFS_BUF_LOCK | XBF_DONT_BLOCK, + blkcnt, XBF_LOCK | XBF_DONT_BLOCK, &bp); if (error) return(error); tmp = (valuelen < XFS_BUF_SIZE(bp)) ? valuelen : XFS_BUF_SIZE(bp); - xfs_biomove(bp, 0, tmp, dst, XFS_B_READ); + xfs_biomove(bp, 0, tmp, dst, XBF_READ); xfs_buf_relse(bp); dst += tmp; valuelen -= tmp; @@ -2039,7 +2046,7 @@ xfs_attr_rmtval_set(xfs_da_args_t *args) xfs_inode_t *dp; xfs_bmbt_irec_t map; xfs_daddr_t dblkno; - xfs_caddr_t src; + void *src; xfs_buf_t *bp; xfs_dablk_t lblkno; int blkcnt, valuelen, nmap, error, tmp, committed; @@ -2141,13 +2148,13 @@ xfs_attr_rmtval_set(xfs_da_args_t *args) blkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount); bp = xfs_buf_get(mp->m_ddev_targp, dblkno, blkcnt, - XFS_BUF_LOCK | XBF_DONT_BLOCK); + XBF_LOCK | XBF_DONT_BLOCK); ASSERT(bp); ASSERT(!XFS_BUF_GETERROR(bp)); tmp = (valuelen < XFS_BUF_SIZE(bp)) ? valuelen : XFS_BUF_SIZE(bp); - xfs_biomove(bp, 0, tmp, src, XFS_B_WRITE); + xfs_biomove(bp, 0, tmp, src, XBF_WRITE); if (tmp < XFS_BUF_SIZE(bp)) xfs_biozero(bp, tmp, XFS_BUF_SIZE(bp) - tmp); if ((error = xfs_bwrite(mp, bp))) {/* GROT: NOTE: synchronous write */ @@ -2208,8 +2215,7 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args) /* * If the "remote" value is in the cache, remove it. */ - bp = xfs_incore(mp->m_ddev_targp, dblkno, blkcnt, - XFS_INCORE_TRYLOCK); + bp = xfs_incore(mp->m_ddev_targp, dblkno, blkcnt, XBF_TRYLOCK); if (bp) { XFS_BUF_STALE(bp); XFS_BUF_UNDELAYWRITE(bp); diff --git a/fs/xfs/xfs_attr.h b/fs/xfs/xfs_attr.h index 59b410c..e920d68 100644 --- a/fs/xfs/xfs_attr.h +++ b/fs/xfs/xfs_attr.h @@ -113,7 +113,7 @@ typedef struct attrlist_cursor_kern { typedef int (*put_listent_func_t)(struct xfs_attr_list_context *, int, - char *, int, int, char *); + unsigned char *, int, int, unsigned char *); typedef struct xfs_attr_list_context { struct xfs_inode *dp; /* inode */ @@ -139,7 +139,6 @@ typedef struct xfs_attr_list_context { /* * Overall external interface routines. */ -int xfs_attr_calc_size(struct xfs_inode *, int, int, int *); int xfs_attr_inactive(struct xfs_inode *dp); int xfs_attr_rmtval_get(struct xfs_da_args *args); int xfs_attr_list_int(struct xfs_attr_list_context *); diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c index baf41b5..a90ce74 100644 --- a/fs/xfs/xfs_attr_leaf.c +++ b/fs/xfs/xfs_attr_leaf.c @@ -521,11 +521,11 @@ xfs_attr_shortform_to_leaf(xfs_da_args_t *args) sfe = &sf->list[0]; for (i = 0; i < sf->hdr.count; i++) { - nargs.name = (char *)sfe->nameval; + nargs.name = sfe->nameval; nargs.namelen = sfe->namelen; - nargs.value = (char *)&sfe->nameval[nargs.namelen]; + nargs.value = &sfe->nameval[nargs.namelen]; nargs.valuelen = sfe->valuelen; - nargs.hashval = xfs_da_hashname((char *)sfe->nameval, + nargs.hashval = xfs_da_hashname(sfe->nameval, sfe->namelen); nargs.flags = XFS_ATTR_NSP_ONDISK_TO_ARGS(sfe->flags); error = xfs_attr_leaf_lookup_int(bp, &nargs); /* set a->index */ @@ -612,10 +612,10 @@ xfs_attr_shortform_list(xfs_attr_list_context_t *context) for (i = 0, sfe = &sf->list[0]; i < sf->hdr.count; i++) { error = context->put_listent(context, sfe->flags, - (char *)sfe->nameval, + sfe->nameval, (int)sfe->namelen, (int)sfe->valuelen, - (char*)&sfe->nameval[sfe->namelen]); + &sfe->nameval[sfe->namelen]); /* * Either search callback finished early or @@ -659,8 +659,8 @@ xfs_attr_shortform_list(xfs_attr_list_context_t *context) } sbp->entno = i; - sbp->hash = xfs_da_hashname((char *)sfe->nameval, sfe->namelen); - sbp->name = (char *)sfe->nameval; + sbp->hash = xfs_da_hashname(sfe->nameval, sfe->namelen); + sbp->name = sfe->nameval; sbp->namelen = sfe->namelen; /* These are bytes, and both on-disk, don't endian-flip */ sbp->valuelen = sfe->valuelen; @@ -818,9 +818,9 @@ xfs_attr_leaf_to_shortform(xfs_dabuf_t *bp, xfs_da_args_t *args, int forkoff) continue; ASSERT(entry->flags & XFS_ATTR_LOCAL); name_loc = xfs_attr_leaf_name_local(leaf, i); - nargs.name = (char *)name_loc->nameval; + nargs.name = name_loc->nameval; nargs.namelen = name_loc->namelen; - nargs.value = (char *)&name_loc->nameval[nargs.namelen]; + nargs.value = &name_loc->nameval[nargs.namelen]; nargs.valuelen = be16_to_cpu(name_loc->valuelen); nargs.hashval = be32_to_cpu(entry->hashval); nargs.flags = XFS_ATTR_NSP_ONDISK_TO_ARGS(entry->flags); @@ -2370,10 +2370,10 @@ xfs_attr_leaf_list_int(xfs_dabuf_t *bp, xfs_attr_list_context_t *context) retval = context->put_listent(context, entry->flags, - (char *)name_loc->nameval, + name_loc->nameval, (int)name_loc->namelen, be16_to_cpu(name_loc->valuelen), - (char *)&name_loc->nameval[name_loc->namelen]); + &name_loc->nameval[name_loc->namelen]); if (retval) return retval; } else { @@ -2397,15 +2397,15 @@ xfs_attr_leaf_list_int(xfs_dabuf_t *bp, xfs_attr_list_context_t *context) return retval; retval = context->put_listent(context, entry->flags, - (char *)name_rmt->name, + name_rmt->name, (int)name_rmt->namelen, valuelen, - (char*)args.value); + args.value); kmem_free(args.value); } else { retval = context->put_listent(context, entry->flags, - (char *)name_rmt->name, + name_rmt->name, (int)name_rmt->namelen, valuelen, NULL); @@ -2950,7 +2950,7 @@ xfs_attr_leaf_freextent(xfs_trans_t **trans, xfs_inode_t *dp, map.br_blockcount); bp = xfs_trans_get_buf(*trans, dp->i_mount->m_ddev_targp, - dblkno, dblkcnt, XFS_BUF_LOCK); + dblkno, dblkcnt, XBF_LOCK); xfs_trans_binval(*trans, bp); /* * Roll to next transaction. diff --git a/fs/xfs/xfs_attr_sf.h b/fs/xfs/xfs_attr_sf.h index 76ab7b0..919756e 100644 --- a/fs/xfs/xfs_attr_sf.h +++ b/fs/xfs/xfs_attr_sf.h @@ -52,7 +52,7 @@ typedef struct xfs_attr_sf_sort { __uint8_t valuelen; /* length of value */ __uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */ xfs_dahash_t hash; /* this entry's hash value */ - char *name; /* name value, pointer into buffer */ + unsigned char *name; /* name value, pointer into buffer */ } xfs_attr_sf_sort_t; #define XFS_ATTR_SF_ENTSIZE_BYNAME(nlen,vlen) /* space name/value uses */ \ diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index 98251cd..1869fb9 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -2629,13 +2629,12 @@ xfs_bmap_btalloc( if (startag == NULLAGNUMBER) startag = ag = 0; notinit = 0; - down_read(&mp->m_peraglock); + pag = xfs_perag_get(mp, ag); while (blen < ap->alen) { - pag = &mp->m_perag[ag]; if (!pag->pagf_init && (error = xfs_alloc_pagf_init(mp, args.tp, ag, XFS_ALLOC_FLAG_TRYLOCK))) { - up_read(&mp->m_peraglock); + xfs_perag_put(pag); return error; } /* @@ -2667,13 +2666,13 @@ xfs_bmap_btalloc( break; error = xfs_filestream_new_ag(ap, &ag); - if (error) { - up_read(&mp->m_peraglock); + xfs_perag_put(pag); + if (error) return error; - } /* loop again to set 'blen'*/ startag = NULLAGNUMBER; + pag = xfs_perag_get(mp, ag); continue; } } @@ -2681,8 +2680,10 @@ xfs_bmap_btalloc( ag = 0; if (ag == startag) break; + xfs_perag_put(pag); + pag = xfs_perag_get(mp, ag); } - up_read(&mp->m_peraglock); + xfs_perag_put(pag); /* * Since the above loop did a BUF_TRYLOCK, it is * possible that there is space for this request. @@ -4470,7 +4471,7 @@ xfs_bmapi( xfs_fsblock_t abno; /* allocated block number */ xfs_extlen_t alen; /* allocated extent length */ xfs_fileoff_t aoff; /* allocated file offset */ - xfs_bmalloca_t bma; /* args for xfs_bmap_alloc */ + xfs_bmalloca_t bma = { 0 }; /* args for xfs_bmap_alloc */ xfs_btree_cur_t *cur; /* bmap btree cursor */ xfs_fileoff_t end; /* end of mapped file region */ int eof; /* we've hit the end of extents */ diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c index 38751d5..416e47e 100644 --- a/fs/xfs/xfs_bmap_btree.c +++ b/fs/xfs/xfs_bmap_btree.c @@ -334,7 +334,7 @@ xfs_bmbt_disk_set_allf( /* * Set all the fields in a bmap extent record from the uncompressed form. */ -void +STATIC void xfs_bmbt_disk_set_all( xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s) diff --git a/fs/xfs/xfs_bmap_btree.h b/fs/xfs/xfs_bmap_btree.h index cf07ca7..0e66c4e 100644 --- a/fs/xfs/xfs_bmap_btree.h +++ b/fs/xfs/xfs_bmap_btree.h @@ -223,7 +223,6 @@ extern void xfs_bmbt_set_startblock(xfs_bmbt_rec_host_t *r, xfs_fsblock_t v); extern void xfs_bmbt_set_startoff(xfs_bmbt_rec_host_t *r, xfs_fileoff_t v); extern void xfs_bmbt_set_state(xfs_bmbt_rec_host_t *r, xfs_exntst_t v); -extern void xfs_bmbt_disk_set_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s); extern void xfs_bmbt_disk_set_allf(xfs_bmbt_rec_t *r, xfs_fileoff_t o, xfs_fsblock_t b, xfs_filblks_t c, xfs_exntst_t v); diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c index 36a0992d..96be4b0 100644 --- a/fs/xfs/xfs_btree.c +++ b/fs/xfs/xfs_btree.c @@ -977,7 +977,7 @@ xfs_btree_get_buf_block( xfs_daddr_t d; /* need to sort out how callers deal with failures first */ - ASSERT(!(flags & XFS_BUF_TRYLOCK)); + ASSERT(!(flags & XBF_TRYLOCK)); d = xfs_btree_ptr_to_daddr(cur, ptr); *bpp = xfs_trans_get_buf(cur->bc_tp, mp->m_ddev_targp, d, @@ -1008,7 +1008,7 @@ xfs_btree_read_buf_block( int error; /* need to sort out how callers deal with failures first */ - ASSERT(!(flags & XFS_BUF_TRYLOCK)); + ASSERT(!(flags & XBF_TRYLOCK)); d = xfs_btree_ptr_to_daddr(cur, ptr); error = xfs_trans_read_buf(mp, cur->bc_tp, mp->m_ddev_targp, d, diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c index a30f7e9..f3c49e6 100644 --- a/fs/xfs/xfs_buf_item.c +++ b/fs/xfs/xfs_buf_item.c @@ -250,7 +250,7 @@ xfs_buf_item_format( ((bip->bli_format.blf_map_size - 1) * sizeof(uint))); vecp->i_addr = (xfs_caddr_t)&bip->bli_format; vecp->i_len = base_size; - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_BFORMAT); + vecp->i_type = XLOG_REG_TYPE_BFORMAT; vecp++; nvecs = 1; @@ -297,14 +297,14 @@ xfs_buf_item_format( buffer_offset = first_bit * XFS_BLI_CHUNK; vecp->i_addr = xfs_buf_offset(bp, buffer_offset); vecp->i_len = nbits * XFS_BLI_CHUNK; - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_BCHUNK); + vecp->i_type = XLOG_REG_TYPE_BCHUNK; nvecs++; break; } else if (next_bit != last_bit + 1) { buffer_offset = first_bit * XFS_BLI_CHUNK; vecp->i_addr = xfs_buf_offset(bp, buffer_offset); vecp->i_len = nbits * XFS_BLI_CHUNK; - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_BCHUNK); + vecp->i_type = XLOG_REG_TYPE_BCHUNK; nvecs++; vecp++; first_bit = next_bit; @@ -316,7 +316,7 @@ xfs_buf_item_format( buffer_offset = first_bit * XFS_BLI_CHUNK; vecp->i_addr = xfs_buf_offset(bp, buffer_offset); vecp->i_len = nbits * XFS_BLI_CHUNK; - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_BCHUNK); + vecp->i_type = XLOG_REG_TYPE_BCHUNK; /* You would think we need to bump the nvecs here too, but we do not * this number is used by recovery, and it gets confused by the boundary * split here @@ -467,8 +467,10 @@ xfs_buf_item_unpin_remove( /* * This is called to attempt to lock the buffer associated with this * buf log item. Don't sleep on the buffer lock. If we can't get - * the lock right away, return 0. If we can get the lock, pull the - * buffer from the free list, mark it busy, and return 1. + * the lock right away, return 0. If we can get the lock, take a + * reference to the buffer. If this is a delayed write buffer that + * needs AIL help to be written back, invoke the pushbuf routine + * rather than the normal success path. */ STATIC uint xfs_buf_item_trylock( @@ -477,24 +479,18 @@ xfs_buf_item_trylock( xfs_buf_t *bp; bp = bip->bli_buf; - - if (XFS_BUF_ISPINNED(bp)) { + if (XFS_BUF_ISPINNED(bp)) return XFS_ITEM_PINNED; - } - - if (!XFS_BUF_CPSEMA(bp)) { + if (!XFS_BUF_CPSEMA(bp)) return XFS_ITEM_LOCKED; - } - /* - * Remove the buffer from the free list. Only do this - * if it's on the free list. Private buffers like the - * superblock buffer are not. - */ + /* take a reference to the buffer. */ XFS_BUF_HOLD(bp); ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); trace_xfs_buf_item_trylock(bip); + if (XFS_BUF_ISDELAYWRITE(bp)) + return XFS_ITEM_PUSHBUF; return XFS_ITEM_SUCCESS; } @@ -626,11 +622,9 @@ xfs_buf_item_committed( } /* - * This is called to asynchronously write the buffer associated with this - * buf log item out to disk. The buffer will already have been locked by - * a successful call to xfs_buf_item_trylock(). If the buffer still has - * B_DELWRI set, then get it going out to disk with a call to bawrite(). - * If not, then just release the buffer. + * The buffer is locked, but is not a delayed write buffer. This happens + * if we race with IO completion and hence we don't want to try to write it + * again. Just release the buffer. */ STATIC void xfs_buf_item_push( @@ -642,17 +636,29 @@ xfs_buf_item_push( trace_xfs_buf_item_push(bip); bp = bip->bli_buf; + ASSERT(!XFS_BUF_ISDELAYWRITE(bp)); + xfs_buf_relse(bp); +} - if (XFS_BUF_ISDELAYWRITE(bp)) { - int error; - error = xfs_bawrite(bip->bli_item.li_mountp, bp); - if (error) - xfs_fs_cmn_err(CE_WARN, bip->bli_item.li_mountp, - "xfs_buf_item_push: pushbuf error %d on bip %p, bp %p", - error, bip, bp); - } else { - xfs_buf_relse(bp); - } +/* + * The buffer is locked and is a delayed write buffer. Promote the buffer + * in the delayed write queue as the caller knows that they must invoke + * the xfsbufd to get this buffer written. We have to unlock the buffer + * to allow the xfsbufd to write it, too. + */ +STATIC void +xfs_buf_item_pushbuf( + xfs_buf_log_item_t *bip) +{ + xfs_buf_t *bp; + + ASSERT(!(bip->bli_flags & XFS_BLI_STALE)); + trace_xfs_buf_item_pushbuf(bip); + + bp = bip->bli_buf; + ASSERT(XFS_BUF_ISDELAYWRITE(bp)); + xfs_buf_delwri_promote(bp); + xfs_buf_relse(bp); } /* ARGSUSED */ @@ -677,7 +683,7 @@ static struct xfs_item_ops xfs_buf_item_ops = { .iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t)) xfs_buf_item_committed, .iop_push = (void(*)(xfs_log_item_t*))xfs_buf_item_push, - .iop_pushbuf = NULL, + .iop_pushbuf = (void(*)(xfs_log_item_t*))xfs_buf_item_pushbuf, .iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t)) xfs_buf_item_committing }; diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c index c0c8869..0ca556b 100644 --- a/fs/xfs/xfs_da_btree.c +++ b/fs/xfs/xfs_da_btree.c @@ -1534,8 +1534,8 @@ xfs_da_hashname(const __uint8_t *name, int namelen) enum xfs_dacmp xfs_da_compname( struct xfs_da_args *args, - const char *name, - int len) + const unsigned char *name, + int len) { return (args->namelen == len && memcmp(args->name, name, len) == 0) ? XFS_CMP_EXACT : XFS_CMP_DIFFERENT; diff --git a/fs/xfs/xfs_da_btree.h b/fs/xfs/xfs_da_btree.h index 30cd08f..fe9f5a8 100644 --- a/fs/xfs/xfs_da_btree.h +++ b/fs/xfs/xfs_da_btree.h @@ -209,7 +209,8 @@ typedef struct xfs_da_state { */ struct xfs_nameops { xfs_dahash_t (*hashname)(struct xfs_name *); - enum xfs_dacmp (*compname)(struct xfs_da_args *, const char *, int); + enum xfs_dacmp (*compname)(struct xfs_da_args *, + const unsigned char *, int); }; @@ -260,7 +261,7 @@ int xfs_da_shrink_inode(xfs_da_args_t *args, xfs_dablk_t dead_blkno, uint xfs_da_hashname(const __uint8_t *name_string, int name_length); enum xfs_dacmp xfs_da_compname(struct xfs_da_args *args, - const char *name, int len); + const unsigned char *name, int len); xfs_da_state_t *xfs_da_state_alloc(void); diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c index 84ca1cf..cd27c9d 100644 --- a/fs/xfs/xfs_dfrag.c +++ b/fs/xfs/xfs_dfrag.c @@ -45,15 +45,21 @@ #include "xfs_vnodeops.h" #include "xfs_trace.h" + +static int xfs_swap_extents( + xfs_inode_t *ip, /* target inode */ + xfs_inode_t *tip, /* tmp inode */ + xfs_swapext_t *sxp); + /* - * Syssgi interface for swapext + * ioctl interface for swapext */ int xfs_swapext( xfs_swapext_t *sxp) { xfs_inode_t *ip, *tip; - struct file *file, *target_file; + struct file *file, *tmp_file; int error = 0; /* Pull information for the target fd */ @@ -68,46 +74,46 @@ xfs_swapext( goto out_put_file; } - target_file = fget((int)sxp->sx_fdtmp); - if (!target_file) { + tmp_file = fget((int)sxp->sx_fdtmp); + if (!tmp_file) { error = XFS_ERROR(EINVAL); goto out_put_file; } - if (!(target_file->f_mode & FMODE_WRITE) || - (target_file->f_flags & O_APPEND)) { + if (!(tmp_file->f_mode & FMODE_WRITE) || + (tmp_file->f_flags & O_APPEND)) { error = XFS_ERROR(EBADF); - goto out_put_target_file; + goto out_put_tmp_file; } if (IS_SWAPFILE(file->f_path.dentry->d_inode) || - IS_SWAPFILE(target_file->f_path.dentry->d_inode)) { + IS_SWAPFILE(tmp_file->f_path.dentry->d_inode)) { error = XFS_ERROR(EINVAL); - goto out_put_target_file; + goto out_put_tmp_file; } ip = XFS_I(file->f_path.dentry->d_inode); - tip = XFS_I(target_file->f_path.dentry->d_inode); + tip = XFS_I(tmp_file->f_path.dentry->d_inode); if (ip->i_mount != tip->i_mount) { error = XFS_ERROR(EINVAL); - goto out_put_target_file; + goto out_put_tmp_file; } if (ip->i_ino == tip->i_ino) { error = XFS_ERROR(EINVAL); - goto out_put_target_file; + goto out_put_tmp_file; } if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { error = XFS_ERROR(EIO); - goto out_put_target_file; + goto out_put_tmp_file; } error = xfs_swap_extents(ip, tip, sxp); - out_put_target_file: - fput(target_file); + out_put_tmp_file: + fput(tmp_file); out_put_file: fput(file); out: @@ -186,7 +192,7 @@ xfs_swap_extents_check_format( return 0; } -int +static int xfs_swap_extents( xfs_inode_t *ip, /* target inode */ xfs_inode_t *tip, /* tmp inode */ @@ -254,6 +260,9 @@ xfs_swap_extents( goto out_unlock; } + trace_xfs_swap_extent_before(ip, 0); + trace_xfs_swap_extent_before(tip, 1); + /* check inode formats now that data is flushed */ error = xfs_swap_extents_check_format(ip, tip); if (error) { @@ -421,6 +430,8 @@ xfs_swap_extents( error = xfs_trans_commit(tp, XFS_TRANS_SWAPEXT); + trace_xfs_swap_extent_after(ip, 0); + trace_xfs_swap_extent_after(tip, 1); out: kmem_free(tempifp); return error; diff --git a/fs/xfs/xfs_dfrag.h b/fs/xfs/xfs_dfrag.h index 4f55a63..20bdd93 100644 --- a/fs/xfs/xfs_dfrag.h +++ b/fs/xfs/xfs_dfrag.h @@ -48,9 +48,6 @@ typedef struct xfs_swapext */ int xfs_swapext(struct xfs_swapext *sx); -int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip, - struct xfs_swapext *sxp); - #endif /* __KERNEL__ */ #endif /* __XFS_DFRAG_H__ */ diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c index 93634a7..42520f0 100644 --- a/fs/xfs/xfs_dir2.c +++ b/fs/xfs/xfs_dir2.c @@ -44,7 +44,7 @@ #include "xfs_vnodeops.h" #include "xfs_trace.h" -struct xfs_name xfs_name_dotdot = {"..", 2}; +struct xfs_name xfs_name_dotdot = { (unsigned char *)"..", 2}; /* * ASCII case-insensitive (ie. A-Z) support for directories that was @@ -66,8 +66,8 @@ xfs_ascii_ci_hashname( STATIC enum xfs_dacmp xfs_ascii_ci_compname( struct xfs_da_args *args, - const char *name, - int len) + const unsigned char *name, + int len) { enum xfs_dacmp result; int i; @@ -247,7 +247,7 @@ xfs_dir_createname( int xfs_dir_cilookup_result( struct xfs_da_args *args, - const char *name, + const unsigned char *name, int len) { if (args->cmpresult == XFS_CMP_DIFFERENT) diff --git a/fs/xfs/xfs_dir2.h b/fs/xfs/xfs_dir2.h index 1d9ef96..74a3b10 100644 --- a/fs/xfs/xfs_dir2.h +++ b/fs/xfs/xfs_dir2.h @@ -100,7 +100,7 @@ extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db, struct xfs_dabuf *bp); -extern int xfs_dir_cilookup_result(struct xfs_da_args *args, const char *name, - int len); +extern int xfs_dir_cilookup_result(struct xfs_da_args *args, + const unsigned char *name, int len); #endif /* __XFS_DIR2_H__ */ diff --git a/fs/xfs/xfs_dir2_block.c b/fs/xfs/xfs_dir2_block.c index ddc4ecc..779a267 100644 --- a/fs/xfs/xfs_dir2_block.c +++ b/fs/xfs/xfs_dir2_block.c @@ -57,8 +57,8 @@ static xfs_dahash_t xfs_dir_hash_dot, xfs_dir_hash_dotdot; void xfs_dir_startup(void) { - xfs_dir_hash_dot = xfs_da_hashname(".", 1); - xfs_dir_hash_dotdot = xfs_da_hashname("..", 2); + xfs_dir_hash_dot = xfs_da_hashname((unsigned char *)".", 1); + xfs_dir_hash_dotdot = xfs_da_hashname((unsigned char *)"..", 2); } /* @@ -513,8 +513,9 @@ xfs_dir2_block_getdents( /* * If it didn't fit, set the final offset to here & return. */ - if (filldir(dirent, dep->name, dep->namelen, cook & 0x7fffffff, - be64_to_cpu(dep->inumber), DT_UNKNOWN)) { + if (filldir(dirent, (char *)dep->name, dep->namelen, + cook & 0x7fffffff, be64_to_cpu(dep->inumber), + DT_UNKNOWN)) { *offset = cook & 0x7fffffff; xfs_da_brelse(NULL, bp); return 0; diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c index 29f484c..e2d8985 100644 --- a/fs/xfs/xfs_dir2_leaf.c +++ b/fs/xfs/xfs_dir2_leaf.c @@ -1081,7 +1081,7 @@ xfs_dir2_leaf_getdents( dep = (xfs_dir2_data_entry_t *)ptr; length = xfs_dir2_data_entsize(dep->namelen); - if (filldir(dirent, dep->name, dep->namelen, + if (filldir(dirent, (char *)dep->name, dep->namelen, xfs_dir2_byte_to_dataptr(mp, curoff) & 0x7fffffff, be64_to_cpu(dep->inumber), DT_UNKNOWN)) break; diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c index ce6e355..78fc4d9 100644 --- a/fs/xfs/xfs_dir2_node.c +++ b/fs/xfs/xfs_dir2_node.c @@ -65,7 +65,7 @@ static int xfs_dir2_node_addname_int(xfs_da_args_t *args, /* * Log entries from a freespace block. */ -void +STATIC void xfs_dir2_free_log_bests( xfs_trans_t *tp, /* transaction pointer */ xfs_dabuf_t *bp, /* freespace buffer */ diff --git a/fs/xfs/xfs_dir2_node.h b/fs/xfs/xfs_dir2_node.h index dde72db..82dfe71 100644 --- a/fs/xfs/xfs_dir2_node.h +++ b/fs/xfs/xfs_dir2_node.h @@ -75,8 +75,6 @@ xfs_dir2_db_to_fdindex(struct xfs_mount *mp, xfs_dir2_db_t db) return ((db) % XFS_DIR2_MAX_FREE_BESTS(mp)); } -extern void xfs_dir2_free_log_bests(struct xfs_trans *tp, struct xfs_dabuf *bp, - int first, int last); extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args, struct xfs_dabuf *lbp); extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_dabuf *bp, int *count); diff --git a/fs/xfs/xfs_dir2_sf.c b/fs/xfs/xfs_dir2_sf.c index 9d4f17a..c1a5945 100644 --- a/fs/xfs/xfs_dir2_sf.c +++ b/fs/xfs/xfs_dir2_sf.c @@ -782,7 +782,7 @@ xfs_dir2_sf_getdents( } ino = xfs_dir2_sf_get_inumber(sfp, xfs_dir2_sf_inumberp(sfep)); - if (filldir(dirent, sfep->name, sfep->namelen, + if (filldir(dirent, (char *)sfep->name, sfep->namelen, off & 0x7fffffff, ino, DT_UNKNOWN)) { *offset = off & 0x7fffffff; return 0; diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c index 05a4bdd..6f35ed1 100644 --- a/fs/xfs/xfs_extfree_item.c +++ b/fs/xfs/xfs_extfree_item.c @@ -82,7 +82,7 @@ xfs_efi_item_format(xfs_efi_log_item_t *efip, log_vector->i_addr = (xfs_caddr_t)&(efip->efi_format); log_vector->i_len = size; - XLOG_VEC_SET_TYPE(log_vector, XLOG_REG_TYPE_EFI_FORMAT); + log_vector->i_type = XLOG_REG_TYPE_EFI_FORMAT; ASSERT(size >= sizeof(xfs_efi_log_format_t)); } @@ -406,7 +406,7 @@ xfs_efd_item_format(xfs_efd_log_item_t *efdp, log_vector->i_addr = (xfs_caddr_t)&(efdp->efd_format); log_vector->i_len = size; - XLOG_VEC_SET_TYPE(log_vector, XLOG_REG_TYPE_EFD_FORMAT); + log_vector->i_type = XLOG_REG_TYPE_EFD_FORMAT; ASSERT(size >= sizeof(xfs_efd_log_format_t)); } diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index a631e14..390850e 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -140,6 +140,7 @@ _xfs_filestream_pick_ag( int flags, xfs_extlen_t minlen) { + int streams, max_streams; int err, trylock, nscan; xfs_extlen_t longest, free, minfree, maxfree = 0; xfs_agnumber_t ag, max_ag = NULLAGNUMBER; @@ -155,15 +156,15 @@ _xfs_filestream_pick_ag( trylock = XFS_ALLOC_FLAG_TRYLOCK; for (nscan = 0; 1; nscan++) { - - TRACE_AG_SCAN(mp, ag, xfs_filestream_peek_ag(mp, ag)); - - pag = mp->m_perag + ag; + pag = xfs_perag_get(mp, ag); + TRACE_AG_SCAN(mp, ag, atomic_read(&pag->pagf_fstrms)); if (!pag->pagf_init) { err = xfs_alloc_pagf_init(mp, NULL, ag, trylock); - if (err && !trylock) + if (err && !trylock) { + xfs_perag_put(pag); return err; + } } /* Might fail sometimes during the 1st pass with trylock set. */ @@ -173,6 +174,7 @@ _xfs_filestream_pick_ag( /* Keep track of the AG with the most free blocks. */ if (pag->pagf_freeblks > maxfree) { maxfree = pag->pagf_freeblks; + max_streams = atomic_read(&pag->pagf_fstrms); max_ag = ag; } @@ -195,6 +197,8 @@ _xfs_filestream_pick_ag( /* Break out, retaining the reference on the AG. */ free = pag->pagf_freeblks; + streams = atomic_read(&pag->pagf_fstrms); + xfs_perag_put(pag); *agp = ag; break; } @@ -202,6 +206,7 @@ _xfs_filestream_pick_ag( /* Drop the reference on this AG, it's not usable. */ xfs_filestream_put_ag(mp, ag); next_ag: + xfs_perag_put(pag); /* Move to the next AG, wrapping to AG 0 if necessary. */ if (++ag >= mp->m_sb.sb_agcount) ag = 0; @@ -229,6 +234,7 @@ next_ag: if (max_ag != NULLAGNUMBER) { xfs_filestream_get_ag(mp, max_ag); TRACE_AG_PICK1(mp, max_ag, maxfree); + streams = max_streams; free = maxfree; *agp = max_ag; break; @@ -240,16 +246,14 @@ next_ag: return 0; } - TRACE_AG_PICK2(mp, startag, *agp, xfs_filestream_peek_ag(mp, *agp), - free, nscan, flags); + TRACE_AG_PICK2(mp, startag, *agp, streams, free, nscan, flags); return 0; } /* * Set the allocation group number for a file or a directory, updating inode - * references and per-AG references as appropriate. Must be called with the - * m_peraglock held in read mode. + * references and per-AG references as appropriate. */ static int _xfs_filestream_update_ag( @@ -451,20 +455,6 @@ xfs_filestream_unmount( } /* - * If the mount point's m_perag array is going to be reallocated, all - * outstanding cache entries must be flushed to avoid accessing reference count - * addresses that have been freed. The call to xfs_filestream_flush() must be - * made inside the block that holds the m_peraglock in write mode to do the - * reallocation. - */ -void -xfs_filestream_flush( - xfs_mount_t *mp) -{ - xfs_mru_cache_flush(mp->m_filestream); -} - -/* * Return the AG of the filestream the file or directory belongs to, or * NULLAGNUMBER otherwise. */ @@ -526,7 +516,6 @@ xfs_filestream_associate( mp = pip->i_mount; cache = mp->m_filestream; - down_read(&mp->m_peraglock); /* * We have a problem, Houston. @@ -543,10 +532,8 @@ xfs_filestream_associate( * * So, if we can't get the iolock without sleeping then just give up */ - if (!xfs_ilock_nowait(pip, XFS_IOLOCK_EXCL)) { - up_read(&mp->m_peraglock); + if (!xfs_ilock_nowait(pip, XFS_IOLOCK_EXCL)) return 1; - } /* If the parent directory is already in the cache, use its AG. */ item = xfs_mru_cache_lookup(cache, pip->i_ino); @@ -601,7 +588,6 @@ exit_did_pick: exit: xfs_iunlock(pip, XFS_IOLOCK_EXCL); - up_read(&mp->m_peraglock); return -err; } diff --git a/fs/xfs/xfs_filestream.h b/fs/xfs/xfs_filestream.h index 4aba67c..260f757 100644 --- a/fs/xfs/xfs_filestream.h +++ b/fs/xfs/xfs_filestream.h @@ -79,12 +79,21 @@ extern ktrace_t *xfs_filestreams_trace_buf; * the cache that reference per-ag array elements that have since been * reallocated. */ +/* + * xfs_filestream_peek_ag is only used in tracing code + */ static inline int xfs_filestream_peek_ag( xfs_mount_t *mp, xfs_agnumber_t agno) { - return atomic_read(&mp->m_perag[agno].pagf_fstrms); + struct xfs_perag *pag; + int ret; + + pag = xfs_perag_get(mp, agno); + ret = atomic_read(&pag->pagf_fstrms); + xfs_perag_put(pag); + return ret; } static inline int @@ -92,7 +101,13 @@ xfs_filestream_get_ag( xfs_mount_t *mp, xfs_agnumber_t agno) { - return atomic_inc_return(&mp->m_perag[agno].pagf_fstrms); + struct xfs_perag *pag; + int ret; + + pag = xfs_perag_get(mp, agno); + ret = atomic_inc_return(&pag->pagf_fstrms); + xfs_perag_put(pag); + return ret; } static inline int @@ -100,7 +115,13 @@ xfs_filestream_put_ag( xfs_mount_t *mp, xfs_agnumber_t agno) { - return atomic_dec_return(&mp->m_perag[agno].pagf_fstrms); + struct xfs_perag *pag; + int ret; + + pag = xfs_perag_get(mp, agno); + ret = atomic_dec_return(&pag->pagf_fstrms); + xfs_perag_put(pag); + return ret; } /* allocation selection flags */ @@ -114,7 +135,6 @@ int xfs_filestream_init(void); void xfs_filestream_uninit(void); int xfs_filestream_mount(struct xfs_mount *mp); void xfs_filestream_unmount(struct xfs_mount *mp); -void xfs_filestream_flush(struct xfs_mount *mp); xfs_agnumber_t xfs_filestream_lookup_ag(struct xfs_inode *ip); int xfs_filestream_associate(struct xfs_inode *dip, struct xfs_inode *ip); void xfs_filestream_deassociate(struct xfs_inode *ip); diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c index a13919a..37a6f62 100644 --- a/fs/xfs/xfs_fsops.c +++ b/fs/xfs/xfs_fsops.c @@ -167,27 +167,14 @@ xfs_growfs_data_private( } new = nb - mp->m_sb.sb_dblocks; oagcount = mp->m_sb.sb_agcount; - if (nagcount > oagcount) { - void *new_perag, *old_perag; - - xfs_filestream_flush(mp); - - new_perag = kmem_zalloc(sizeof(xfs_perag_t) * nagcount, - KM_MAYFAIL); - if (!new_perag) - return XFS_ERROR(ENOMEM); - - down_write(&mp->m_peraglock); - memcpy(new_perag, mp->m_perag, sizeof(xfs_perag_t) * oagcount); - old_perag = mp->m_perag; - mp->m_perag = new_perag; - - mp->m_flags |= XFS_MOUNT_32BITINODES; - nagimax = xfs_initialize_perag(mp, nagcount); - up_write(&mp->m_peraglock); - kmem_free(old_perag); + /* allocate the new per-ag structures */ + if (nagcount > oagcount) { + error = xfs_initialize_perag(mp, nagcount, &nagimax); + if (error) + return error; } + tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS); tp->t_flags |= XFS_TRANS_RESERVE; if ((error = xfs_trans_reserve(tp, XFS_GROWFS_SPACE_RES(mp), @@ -196,6 +183,11 @@ xfs_growfs_data_private( return error; } + /* + * Write new AG headers to disk. Non-transactional, but written + * synchronously so they are completed prior to the growfs transaction + * being logged. + */ nfree = 0; for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) { /* @@ -359,6 +351,12 @@ xfs_growfs_data_private( goto error0; } } + + /* + * Update changed superblock fields transactionally. These are not + * seen by the rest of the world until the transaction commit applies + * them atomically to the superblock. + */ if (nagcount > oagcount) xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount); if (nb > mp->m_sb.sb_dblocks) @@ -369,9 +367,9 @@ xfs_growfs_data_private( if (dpct) xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct); error = xfs_trans_commit(tp, 0); - if (error) { + if (error) return error; - } + /* New allocation groups fully initialized, so update mount struct */ if (nagimax) mp->m_maxagi = nagimax; @@ -381,6 +379,8 @@ xfs_growfs_data_private( mp->m_maxicount = icount << mp->m_sb.sb_inopblog; } else mp->m_maxicount = 0; + + /* update secondary superblocks. */ for (agno = 1; agno < nagcount; agno++) { error = xfs_read_buf(mp, mp->m_ddev_targp, XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)), diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c index cb907ba..9d884c1 100644 --- a/fs/xfs/xfs_ialloc.c +++ b/fs/xfs/xfs_ialloc.c @@ -205,7 +205,7 @@ xfs_ialloc_inode_init( d = XFS_AGB_TO_DADDR(mp, agno, agbno + (j * blks_per_cluster)); fbuf = xfs_trans_get_buf(tp, mp->m_ddev_targp, d, mp->m_bsize * blks_per_cluster, - XFS_BUF_LOCK); + XBF_LOCK); ASSERT(fbuf); ASSERT(!XFS_BUF_GETERROR(fbuf)); @@ -253,6 +253,7 @@ xfs_ialloc_ag_alloc( xfs_agino_t thisino; /* current inode number, for loop */ int isaligned = 0; /* inode allocation at stripe unit */ /* boundary */ + struct xfs_perag *pag; args.tp = tp; args.mp = tp->t_mountp; @@ -382,9 +383,9 @@ xfs_ialloc_ag_alloc( newino = XFS_OFFBNO_TO_AGINO(args.mp, args.agbno, 0); be32_add_cpu(&agi->agi_count, newlen); be32_add_cpu(&agi->agi_freecount, newlen); - down_read(&args.mp->m_peraglock); - args.mp->m_perag[agno].pagi_freecount += newlen; - up_read(&args.mp->m_peraglock); + pag = xfs_perag_get(args.mp, agno); + pag->pagi_freecount += newlen; + xfs_perag_put(pag); agi->agi_newino = cpu_to_be32(newino); /* @@ -486,9 +487,8 @@ xfs_ialloc_ag_select( */ agno = pagno; flags = XFS_ALLOC_FLAG_TRYLOCK; - down_read(&mp->m_peraglock); for (;;) { - pag = &mp->m_perag[agno]; + pag = xfs_perag_get(mp, agno); if (!pag->pagi_init) { if (xfs_ialloc_read_agi(mp, tp, agno, &agbp)) { agbp = NULL; @@ -527,7 +527,7 @@ xfs_ialloc_ag_select( agbp = NULL; goto nextag; } - up_read(&mp->m_peraglock); + xfs_perag_put(pag); return agbp; } } @@ -535,22 +535,19 @@ unlock_nextag: if (agbp) xfs_trans_brelse(tp, agbp); nextag: + xfs_perag_put(pag); /* * No point in iterating over the rest, if we're shutting * down. */ - if (XFS_FORCED_SHUTDOWN(mp)) { - up_read(&mp->m_peraglock); + if (XFS_FORCED_SHUTDOWN(mp)) return NULL; - } agno++; if (agno >= agcount) agno = 0; if (agno == pagno) { - if (flags == 0) { - up_read(&mp->m_peraglock); + if (flags == 0) return NULL; - } flags = 0; } } @@ -672,6 +669,7 @@ xfs_dialloc( xfs_agnumber_t tagno; /* testing allocation group number */ xfs_btree_cur_t *tcur; /* temp cursor */ xfs_inobt_rec_incore_t trec; /* temp inode allocation record */ + struct xfs_perag *pag; if (*IO_agbp == NULL) { @@ -771,13 +769,13 @@ nextag: *inop = NULLFSINO; return noroom ? ENOSPC : 0; } - down_read(&mp->m_peraglock); - if (mp->m_perag[tagno].pagi_inodeok == 0) { - up_read(&mp->m_peraglock); + pag = xfs_perag_get(mp, tagno); + if (pag->pagi_inodeok == 0) { + xfs_perag_put(pag); goto nextag; } error = xfs_ialloc_read_agi(mp, tp, tagno, &agbp); - up_read(&mp->m_peraglock); + xfs_perag_put(pag); if (error) goto nextag; agi = XFS_BUF_TO_AGI(agbp); @@ -790,6 +788,7 @@ nextag: */ agno = tagno; *IO_agbp = NULL; + pag = xfs_perag_get(mp, agno); restart_pagno: cur = xfs_inobt_init_cursor(mp, tp, agbp, be32_to_cpu(agi->agi_seqno)); @@ -808,7 +807,6 @@ nextag: * If in the same AG as the parent, try to get near the parent. */ if (pagno == agno) { - xfs_perag_t *pag = &mp->m_perag[agno]; int doneleft; /* done, to the left */ int doneright; /* done, to the right */ int searchdistance = 10; @@ -1006,9 +1004,7 @@ alloc_inode: goto error0; be32_add_cpu(&agi->agi_freecount, -1); xfs_ialloc_log_agi(tp, agbp, XFS_AGI_FREECOUNT); - down_read(&mp->m_peraglock); - mp->m_perag[tagno].pagi_freecount--; - up_read(&mp->m_peraglock); + pag->pagi_freecount--; error = xfs_check_agi_freecount(cur, agi); if (error) @@ -1016,12 +1012,14 @@ alloc_inode: xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); xfs_trans_mod_sb(tp, XFS_TRANS_SB_IFREE, -1); + xfs_perag_put(pag); *inop = ino; return 0; error1: xfs_btree_del_cursor(tcur, XFS_BTREE_ERROR); error0: xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); + xfs_perag_put(pag); return error; } @@ -1052,6 +1050,7 @@ xfs_difree( xfs_mount_t *mp; /* mount structure for filesystem */ int off; /* offset of inode in inode chunk */ xfs_inobt_rec_incore_t rec; /* btree record */ + struct xfs_perag *pag; mp = tp->t_mountp; @@ -1088,9 +1087,7 @@ xfs_difree( /* * Get the allocation group header. */ - down_read(&mp->m_peraglock); error = xfs_ialloc_read_agi(mp, tp, agno, &agbp); - up_read(&mp->m_peraglock); if (error) { cmn_err(CE_WARN, "xfs_difree: xfs_ialloc_read_agi() returned an error %d on %s. Returning error.", @@ -1157,9 +1154,9 @@ xfs_difree( be32_add_cpu(&agi->agi_count, -ilen); be32_add_cpu(&agi->agi_freecount, -(ilen - 1)); xfs_ialloc_log_agi(tp, agbp, XFS_AGI_COUNT | XFS_AGI_FREECOUNT); - down_read(&mp->m_peraglock); - mp->m_perag[agno].pagi_freecount -= ilen - 1; - up_read(&mp->m_peraglock); + pag = xfs_perag_get(mp, agno); + pag->pagi_freecount -= ilen - 1; + xfs_perag_put(pag); xfs_trans_mod_sb(tp, XFS_TRANS_SB_ICOUNT, -ilen); xfs_trans_mod_sb(tp, XFS_TRANS_SB_IFREE, -(ilen - 1)); @@ -1188,9 +1185,9 @@ xfs_difree( */ be32_add_cpu(&agi->agi_freecount, 1); xfs_ialloc_log_agi(tp, agbp, XFS_AGI_FREECOUNT); - down_read(&mp->m_peraglock); - mp->m_perag[agno].pagi_freecount++; - up_read(&mp->m_peraglock); + pag = xfs_perag_get(mp, agno); + pag->pagi_freecount++; + xfs_perag_put(pag); xfs_trans_mod_sb(tp, XFS_TRANS_SB_IFREE, 1); } @@ -1312,9 +1309,7 @@ xfs_imap( xfs_buf_t *agbp; /* agi buffer */ int i; /* temp state */ - down_read(&mp->m_peraglock); error = xfs_ialloc_read_agi(mp, tp, agno, &agbp); - up_read(&mp->m_peraglock); if (error) { xfs_fs_cmn_err(CE_ALERT, mp, "xfs_imap: " "xfs_ialloc_read_agi() returned " @@ -1379,7 +1374,6 @@ xfs_imap( XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks)); return XFS_ERROR(EINVAL); } - return 0; } @@ -1523,8 +1517,7 @@ xfs_ialloc_read_agi( return error; agi = XFS_BUF_TO_AGI(*bpp); - pag = &mp->m_perag[agno]; - + pag = xfs_perag_get(mp, agno); if (!pag->pagi_init) { pag->pagi_freecount = be32_to_cpu(agi->agi_freecount); pag->pagi_count = be32_to_cpu(agi->agi_count); @@ -1537,6 +1530,7 @@ xfs_ialloc_read_agi( */ ASSERT(pag->pagi_freecount == be32_to_cpu(agi->agi_freecount) || XFS_FORCED_SHUTDOWN(mp)); + xfs_perag_put(pag); return 0; } diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c index 155e798..e281eb4 100644 --- a/fs/xfs/xfs_iget.c +++ b/fs/xfs/xfs_iget.c @@ -374,7 +374,7 @@ xfs_iget( return EINVAL; /* get the perag structure and ensure that it's inode capable */ - pag = xfs_get_perag(mp, ino); + pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ino)); if (!pag->pagi_inodeok) return EINVAL; ASSERT(pag->pag_ici_init); @@ -398,7 +398,7 @@ again: if (error) goto out_error_or_again; } - xfs_put_perag(mp, pag); + xfs_perag_put(pag); *ipp = ip; @@ -417,7 +417,7 @@ out_error_or_again: delay(1); goto again; } - xfs_put_perag(mp, pag); + xfs_perag_put(pag); return error; } @@ -488,12 +488,12 @@ xfs_ireclaim( * added to the tree assert that it's been there before to catch * problems with the inode life time early on. */ - pag = xfs_get_perag(mp, ip->i_ino); + pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); write_lock(&pag->pag_ici_lock); if (!radix_tree_delete(&pag->pag_ici_root, agino)) ASSERT(0); write_unlock(&pag->pag_ici_lock); - xfs_put_perag(mp, pag); + xfs_perag_put(pag); /* * Here we do an (almost) spurious inode lock in order to coordinate diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index ef77fd8..fa31360 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -151,7 +151,7 @@ xfs_imap_to_bp( "an error %d on %s. Returning error.", error, mp->m_fsname); } else { - ASSERT(buf_flags & XFS_BUF_TRYLOCK); + ASSERT(buf_flags & XBF_TRYLOCK); } return error; } @@ -239,7 +239,7 @@ xfs_inotobp( if (error) return error; - error = xfs_imap_to_bp(mp, tp, &imap, &bp, XFS_BUF_LOCK, imap_flags); + error = xfs_imap_to_bp(mp, tp, &imap, &bp, XBF_LOCK, imap_flags); if (error) return error; @@ -285,7 +285,7 @@ xfs_itobp( return error; if (!bp) { - ASSERT(buf_flags & XFS_BUF_TRYLOCK); + ASSERT(buf_flags & XBF_TRYLOCK); ASSERT(tp == NULL); *bpp = NULL; return EAGAIN; @@ -807,7 +807,7 @@ xfs_iread( * Get pointers to the on-disk inode and the buffer containing it. */ error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &bp, - XFS_BUF_LOCK, iget_flags); + XBF_LOCK, iget_flags); if (error) return error; dip = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_imap.im_boffset); @@ -1751,7 +1751,7 @@ xfs_iunlink( * Here we put the head pointer into our next pointer, * and then we fall through to point the head at us. */ - error = xfs_itobp(mp, tp, ip, &dip, &ibp, XFS_BUF_LOCK); + error = xfs_itobp(mp, tp, ip, &dip, &ibp, XBF_LOCK); if (error) return error; @@ -1833,7 +1833,7 @@ xfs_iunlink_remove( * of dealing with the buffer when there is no need to * change it. */ - error = xfs_itobp(mp, tp, ip, &dip, &ibp, XFS_BUF_LOCK); + error = xfs_itobp(mp, tp, ip, &dip, &ibp, XBF_LOCK); if (error) { cmn_err(CE_WARN, "xfs_iunlink_remove: xfs_itobp() returned an error %d on %s. Returning error.", @@ -1895,7 +1895,7 @@ xfs_iunlink_remove( * Now last_ibp points to the buffer previous to us on * the unlinked list. Pull us from the list. */ - error = xfs_itobp(mp, tp, ip, &dip, &ibp, XFS_BUF_LOCK); + error = xfs_itobp(mp, tp, ip, &dip, &ibp, XBF_LOCK); if (error) { cmn_err(CE_WARN, "xfs_iunlink_remove: xfs_itobp() returned an error %d on %s. Returning error.", @@ -1946,8 +1946,9 @@ xfs_ifree_cluster( xfs_inode_t *ip, **ip_found; xfs_inode_log_item_t *iip; xfs_log_item_t *lip; - xfs_perag_t *pag = xfs_get_perag(mp, inum); + struct xfs_perag *pag; + pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, inum)); if (mp->m_sb.sb_blocksize >= XFS_INODE_CLUSTER_SIZE(mp)) { blks_per_cluster = 1; ninodes = mp->m_sb.sb_inopblock; @@ -2039,7 +2040,7 @@ xfs_ifree_cluster( bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, blkno, mp->m_bsize * blks_per_cluster, - XFS_BUF_LOCK); + XBF_LOCK); pre_flushed = 0; lip = XFS_BUF_FSPRIVATE(bp, xfs_log_item_t *); @@ -2088,7 +2089,7 @@ xfs_ifree_cluster( } kmem_free(ip_found); - xfs_put_perag(mp, pag); + xfs_perag_put(pag); } /* @@ -2150,7 +2151,7 @@ xfs_ifree( xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - error = xfs_itobp(ip->i_mount, tp, ip, &dip, &ibp, XFS_BUF_LOCK); + error = xfs_itobp(ip->i_mount, tp, ip, &dip, &ibp, XBF_LOCK); if (error) return error; @@ -2483,13 +2484,16 @@ __xfs_iunpin_wait( return; /* Give the log a push to start the unpinning I/O */ - xfs_log_force(ip->i_mount, (iip && iip->ili_last_lsn) ? - iip->ili_last_lsn : 0, XFS_LOG_FORCE); + if (iip && iip->ili_last_lsn) + xfs_log_force_lsn(ip->i_mount, iip->ili_last_lsn, 0); + else + xfs_log_force(ip->i_mount, 0); + if (wait) wait_event(ip->i_ipin_wait, (atomic_read(&ip->i_pincount) == 0)); } -static inline void +void xfs_iunpin_wait( xfs_inode_t *ip) { @@ -2675,7 +2679,7 @@ xfs_iflush_cluster( xfs_buf_t *bp) { xfs_mount_t *mp = ip->i_mount; - xfs_perag_t *pag = xfs_get_perag(mp, ip->i_ino); + struct xfs_perag *pag; unsigned long first_index, mask; unsigned long inodes_per_cluster; int ilist_size; @@ -2686,6 +2690,7 @@ xfs_iflush_cluster( int bufwasdelwri; int i; + pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino)); ASSERT(pag->pagi_inodeok); ASSERT(pag->pag_ici_init); @@ -2693,7 +2698,7 @@ xfs_iflush_cluster( ilist_size = inodes_per_cluster * sizeof(xfs_inode_t *); ilist = kmem_alloc(ilist_size, KM_MAYFAIL|KM_NOFS); if (!ilist) - return 0; + goto out_put; mask = ~(((XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog)) - 1); first_index = XFS_INO_TO_AGINO(mp, ip->i_ino) & mask; @@ -2762,6 +2767,8 @@ xfs_iflush_cluster( out_free: read_unlock(&pag->pag_ici_lock); kmem_free(ilist); +out_put: + xfs_perag_put(pag); return 0; @@ -2805,6 +2812,7 @@ cluster_corrupt_out: */ xfs_iflush_abort(iq); kmem_free(ilist); + xfs_perag_put(pag); return XFS_ERROR(EFSCORRUPTED); } @@ -2827,8 +2835,6 @@ xfs_iflush( xfs_dinode_t *dip; xfs_mount_t *mp; int error; - int noblock = (flags == XFS_IFLUSH_ASYNC_NOBLOCK); - enum { INT_DELWRI = (1 << 0), INT_ASYNC = (1 << 1) }; XFS_STATS_INC(xs_iflush_count); @@ -2841,15 +2847,6 @@ xfs_iflush( mp = ip->i_mount; /* - * If the inode isn't dirty, then just release the inode flush lock and - * do nothing. - */ - if (xfs_inode_clean(ip)) { - xfs_ifunlock(ip); - return 0; - } - - /* * We can't flush the inode until it is unpinned, so wait for it if we * are allowed to block. We know noone new can pin it, because we are * holding the inode lock shared and you need to hold it exclusively to @@ -2860,7 +2857,7 @@ xfs_iflush( * in the same cluster are dirty, they will probably write the inode * out for us if they occur after the log force completes. */ - if (noblock && xfs_ipincount(ip)) { + if (!(flags & SYNC_WAIT) && xfs_ipincount(ip)) { xfs_iunpin_nowait(ip); xfs_ifunlock(ip); return EAGAIN; @@ -2894,60 +2891,10 @@ xfs_iflush( } /* - * Decide how buffer will be flushed out. This is done before - * the call to xfs_iflush_int because this field is zeroed by it. - */ - if (iip != NULL && iip->ili_format.ilf_fields != 0) { - /* - * Flush out the inode buffer according to the directions - * of the caller. In the cases where the caller has given - * us a choice choose the non-delwri case. This is because - * the inode is in the AIL and we need to get it out soon. - */ - switch (flags) { - case XFS_IFLUSH_SYNC: - case XFS_IFLUSH_DELWRI_ELSE_SYNC: - flags = 0; - break; - case XFS_IFLUSH_ASYNC_NOBLOCK: - case XFS_IFLUSH_ASYNC: - case XFS_IFLUSH_DELWRI_ELSE_ASYNC: - flags = INT_ASYNC; - break; - case XFS_IFLUSH_DELWRI: - flags = INT_DELWRI; - break; - default: - ASSERT(0); - flags = 0; - break; - } - } else { - switch (flags) { - case XFS_IFLUSH_DELWRI_ELSE_SYNC: - case XFS_IFLUSH_DELWRI_ELSE_ASYNC: - case XFS_IFLUSH_DELWRI: - flags = INT_DELWRI; - break; - case XFS_IFLUSH_ASYNC_NOBLOCK: - case XFS_IFLUSH_ASYNC: - flags = INT_ASYNC; - break; - case XFS_IFLUSH_SYNC: - flags = 0; - break; - default: - ASSERT(0); - flags = 0; - break; - } - } - - /* * Get the buffer containing the on-disk inode. */ error = xfs_itobp(mp, NULL, ip, &dip, &bp, - noblock ? XFS_BUF_TRYLOCK : XFS_BUF_LOCK); + (flags & SYNC_WAIT) ? XBF_LOCK : XBF_TRYLOCK); if (error || !bp) { xfs_ifunlock(ip); return error; @@ -2965,7 +2912,7 @@ xfs_iflush( * get stuck waiting in the write for too long. */ if (XFS_BUF_ISPINNED(bp)) - xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE); + xfs_log_force(mp, 0); /* * inode clustering: @@ -2975,13 +2922,10 @@ xfs_iflush( if (error) goto cluster_corrupt_out; - if (flags & INT_DELWRI) { - xfs_bdwrite(mp, bp); - } else if (flags & INT_ASYNC) { - error = xfs_bawrite(mp, bp); - } else { + if (flags & SYNC_WAIT) error = xfs_bwrite(mp, bp); - } + else + xfs_bdwrite(mp, bp); return error; corrupt_out: @@ -3016,16 +2960,6 @@ xfs_iflush_int( iip = ip->i_itemp; mp = ip->i_mount; - - /* - * If the inode isn't dirty, then just release the inode - * flush lock and do nothing. - */ - if (xfs_inode_clean(ip)) { - xfs_ifunlock(ip); - return 0; - } - /* set *dip = inode's place in the buffer */ dip = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_imap.im_boffset); diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index ec1f28c..6c912b0 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -420,16 +420,6 @@ static inline void xfs_ifunlock(xfs_inode_t *ip) #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) /* - * Flags for xfs_iflush() - */ -#define XFS_IFLUSH_DELWRI_ELSE_SYNC 1 -#define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2 -#define XFS_IFLUSH_SYNC 3 -#define XFS_IFLUSH_ASYNC 4 -#define XFS_IFLUSH_DELWRI 5 -#define XFS_IFLUSH_ASYNC_NOBLOCK 6 - -/* * Flags for xfs_itruncate_start(). */ #define XFS_ITRUNC_DEFINITE 0x1 @@ -483,6 +473,7 @@ int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); void xfs_iext_realloc(xfs_inode_t *, int, int); void xfs_ipin(xfs_inode_t *); void xfs_iunpin(xfs_inode_t *); +void xfs_iunpin_wait(xfs_inode_t *); int xfs_iflush(xfs_inode_t *, uint); void xfs_ichgtime(xfs_inode_t *, int); void xfs_lock_inodes(xfs_inode_t **, int, uint); diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c index f38855d..d4dc063 100644 --- a/fs/xfs/xfs_inode_item.c +++ b/fs/xfs/xfs_inode_item.c @@ -228,7 +228,7 @@ xfs_inode_item_format( vecp->i_addr = (xfs_caddr_t)&iip->ili_format; vecp->i_len = sizeof(xfs_inode_log_format_t); - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IFORMAT); + vecp->i_type = XLOG_REG_TYPE_IFORMAT; vecp++; nvecs = 1; @@ -279,7 +279,7 @@ xfs_inode_item_format( vecp->i_addr = (xfs_caddr_t)&ip->i_d; vecp->i_len = sizeof(struct xfs_icdinode); - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_ICORE); + vecp->i_type = XLOG_REG_TYPE_ICORE; vecp++; nvecs++; iip->ili_format.ilf_fields |= XFS_ILOG_CORE; @@ -336,7 +336,7 @@ xfs_inode_item_format( vecp->i_addr = (char *)(ip->i_df.if_u1.if_extents); vecp->i_len = ip->i_df.if_bytes; - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IEXT); + vecp->i_type = XLOG_REG_TYPE_IEXT; } else #endif { @@ -355,7 +355,7 @@ xfs_inode_item_format( vecp->i_addr = (xfs_caddr_t)ext_buffer; vecp->i_len = xfs_iextents_copy(ip, ext_buffer, XFS_DATA_FORK); - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IEXT); + vecp->i_type = XLOG_REG_TYPE_IEXT; } ASSERT(vecp->i_len <= ip->i_df.if_bytes); iip->ili_format.ilf_dsize = vecp->i_len; @@ -373,7 +373,7 @@ xfs_inode_item_format( ASSERT(ip->i_df.if_broot != NULL); vecp->i_addr = (xfs_caddr_t)ip->i_df.if_broot; vecp->i_len = ip->i_df.if_broot_bytes; - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IBROOT); + vecp->i_type = XLOG_REG_TYPE_IBROOT; vecp++; nvecs++; iip->ili_format.ilf_dsize = ip->i_df.if_broot_bytes; @@ -399,7 +399,7 @@ xfs_inode_item_format( ASSERT((ip->i_df.if_real_bytes == 0) || (ip->i_df.if_real_bytes == data_bytes)); vecp->i_len = (int)data_bytes; - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_ILOCAL); + vecp->i_type = XLOG_REG_TYPE_ILOCAL; vecp++; nvecs++; iip->ili_format.ilf_dsize = (unsigned)data_bytes; @@ -477,7 +477,7 @@ xfs_inode_item_format( vecp->i_len = xfs_iextents_copy(ip, ext_buffer, XFS_ATTR_FORK); #endif - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IATTR_EXT); + vecp->i_type = XLOG_REG_TYPE_IATTR_EXT; iip->ili_format.ilf_asize = vecp->i_len; vecp++; nvecs++; @@ -492,7 +492,7 @@ xfs_inode_item_format( ASSERT(ip->i_afp->if_broot != NULL); vecp->i_addr = (xfs_caddr_t)ip->i_afp->if_broot; vecp->i_len = ip->i_afp->if_broot_bytes; - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IATTR_BROOT); + vecp->i_type = XLOG_REG_TYPE_IATTR_BROOT; vecp++; nvecs++; iip->ili_format.ilf_asize = ip->i_afp->if_broot_bytes; @@ -516,7 +516,7 @@ xfs_inode_item_format( ASSERT((ip->i_afp->if_real_bytes == 0) || (ip->i_afp->if_real_bytes == data_bytes)); vecp->i_len = (int)data_bytes; - XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IATTR_LOCAL); + vecp->i_type = XLOG_REG_TYPE_IATTR_LOCAL; vecp++; nvecs++; iip->ili_format.ilf_asize = (unsigned)data_bytes; @@ -602,33 +602,20 @@ xfs_inode_item_trylock( if (!xfs_iflock_nowait(ip)) { /* - * If someone else isn't already trying to push the inode - * buffer, we get to do it. + * inode has already been flushed to the backing buffer, + * leave it locked in shared mode, pushbuf routine will + * unlock it. */ - if (iip->ili_pushbuf_flag == 0) { - iip->ili_pushbuf_flag = 1; -#ifdef DEBUG - iip->ili_push_owner = current_pid(); -#endif - /* - * Inode is left locked in shared mode. - * Pushbuf routine gets to unlock it. - */ - return XFS_ITEM_PUSHBUF; - } else { - /* - * We hold the AIL lock, so we must specify the - * NONOTIFY flag so that we won't double trip. - */ - xfs_iunlock(ip, XFS_ILOCK_SHARED|XFS_IUNLOCK_NONOTIFY); - return XFS_ITEM_FLUSHING; - } - /* NOTREACHED */ + return XFS_ITEM_PUSHBUF; } /* Stale items should force out the iclog */ if (ip->i_flags & XFS_ISTALE) { xfs_ifunlock(ip); + /* + * we hold the AIL lock - notify the unlock routine of this + * so it doesn't try to get the lock again. + */ xfs_iunlock(ip, XFS_ILOCK_SHARED|XFS_IUNLOCK_NONOTIFY); return XFS_ITEM_PINNED; } @@ -746,11 +733,8 @@ xfs_inode_item_committed( * This gets called by xfs_trans_push_ail(), when IOP_TRYLOCK * failed to get the inode flush lock but did get the inode locked SHARED. * Here we're trying to see if the inode buffer is incore, and if so whether it's - * marked delayed write. If that's the case, we'll initiate a bawrite on that - * buffer to expedite the process. - * - * We aren't holding the AIL lock (or the flush lock) when this gets called, - * so it is inherently race-y. + * marked delayed write. If that's the case, we'll promote it and that will + * allow the caller to write the buffer by triggering the xfsbufd to run. */ STATIC void xfs_inode_item_pushbuf( @@ -759,82 +743,30 @@ xfs_inode_item_pushbuf( xfs_inode_t *ip; xfs_mount_t *mp; xfs_buf_t *bp; - uint dopush; ip = iip->ili_inode; - ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED)); /* - * The ili_pushbuf_flag keeps others from - * trying to duplicate our effort. - */ - ASSERT(iip->ili_pushbuf_flag != 0); - ASSERT(iip->ili_push_owner == current_pid()); - - /* * If a flush is not in progress anymore, chances are that the * inode was taken off the AIL. So, just get out. */ if (completion_done(&ip->i_flush) || ((iip->ili_item.li_flags & XFS_LI_IN_AIL) == 0)) { - iip->ili_pushbuf_flag = 0; xfs_iunlock(ip, XFS_ILOCK_SHARED); return; } mp = ip->i_mount; bp = xfs_incore(mp->m_ddev_targp, iip->ili_format.ilf_blkno, - iip->ili_format.ilf_len, XFS_INCORE_TRYLOCK); + iip->ili_format.ilf_len, XBF_TRYLOCK); - if (bp != NULL) { - if (XFS_BUF_ISDELAYWRITE(bp)) { - /* - * We were racing with iflush because we don't hold - * the AIL lock or the flush lock. However, at this point, - * we have the buffer, and we know that it's dirty. - * So, it's possible that iflush raced with us, and - * this item is already taken off the AIL. - * If not, we can flush it async. - */ - dopush = ((iip->ili_item.li_flags & XFS_LI_IN_AIL) && - !completion_done(&ip->i_flush)); - iip->ili_pushbuf_flag = 0; - xfs_iunlock(ip, XFS_ILOCK_SHARED); - - trace_xfs_inode_item_push(bp, _RET_IP_); - - if (XFS_BUF_ISPINNED(bp)) { - xfs_log_force(mp, (xfs_lsn_t)0, - XFS_LOG_FORCE); - } - if (dopush) { - int error; - error = xfs_bawrite(mp, bp); - if (error) - xfs_fs_cmn_err(CE_WARN, mp, - "xfs_inode_item_pushbuf: pushbuf error %d on iip %p, bp %p", - error, iip, bp); - } else { - xfs_buf_relse(bp); - } - } else { - iip->ili_pushbuf_flag = 0; - xfs_iunlock(ip, XFS_ILOCK_SHARED); - xfs_buf_relse(bp); - } - return; - } - /* - * We have to be careful about resetting pushbuf flag too early (above). - * Even though in theory we can do it as soon as we have the buflock, - * we don't want others to be doing work needlessly. They'll come to - * this function thinking that pushing the buffer is their - * responsibility only to find that the buffer is still locked by - * another doing the same thing - */ - iip->ili_pushbuf_flag = 0; xfs_iunlock(ip, XFS_ILOCK_SHARED); + if (!bp) + return; + if (XFS_BUF_ISDELAYWRITE(bp)) + xfs_buf_delwri_promote(bp); + xfs_buf_relse(bp); return; } @@ -867,10 +799,14 @@ xfs_inode_item_push( iip->ili_format.ilf_fields != 0); /* - * Write out the inode. The completion routine ('iflush_done') will - * pull it from the AIL, mark it clean, unlock the flush lock. + * Push the inode to it's backing buffer. This will not remove the + * inode from the AIL - a further push will be required to trigger a + * buffer push. However, this allows all the dirty inodes to be pushed + * to the buffer before it is pushed to disk. THe buffer IO completion + * will pull th einode from the AIL, mark it clean and unlock the flush + * lock. */ - (void) xfs_iflush(ip, XFS_IFLUSH_ASYNC); + (void) xfs_iflush(ip, 0); xfs_iunlock(ip, XFS_ILOCK_SHARED); return; @@ -934,7 +870,6 @@ xfs_inode_item_init( /* We have zeroed memory. No need ... iip->ili_extents_buf = NULL; - iip->ili_pushbuf_flag = 0; */ iip->ili_format.ilf_type = XFS_LI_INODE; diff --git a/fs/xfs/xfs_inode_item.h b/fs/xfs/xfs_inode_item.h index cc8df1a..9a46795 100644 --- a/fs/xfs/xfs_inode_item.h +++ b/fs/xfs/xfs_inode_item.h @@ -144,12 +144,6 @@ typedef struct xfs_inode_log_item { data exts */ struct xfs_bmbt_rec *ili_aextents_buf; /* array of logged attr exts */ - unsigned int ili_pushbuf_flag; /* one bit used in push_ail */ - -#ifdef DEBUG - uint64_t ili_push_owner; /* one who sets pushbuf_flag - above gets to push the buf */ -#endif #ifdef XFS_TRANS_DEBUG int ili_root_size; char *ili_orig_root; diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c index 62efab2..3af0231 100644 --- a/fs/xfs/xfs_itable.c +++ b/fs/xfs/xfs_itable.c @@ -408,8 +408,10 @@ xfs_bulkstat( (XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog); nimask = ~(nicluster - 1); nbcluster = nicluster >> mp->m_sb.sb_inopblog; - irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4, - KM_SLEEP | KM_MAYFAIL | KM_LARGE); + irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4); + if (!irbuf) + return ENOMEM; + nirbuf = irbsize / sizeof(*irbuf); /* @@ -420,9 +422,7 @@ xfs_bulkstat( while (XFS_BULKSTAT_UBLEFT(ubleft) && agno < mp->m_sb.sb_agcount) { cond_resched(); bp = NULL; - down_read(&mp->m_peraglock); error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp); - up_read(&mp->m_peraglock); if (error) { /* * Skip this allocation group and go to the next one. @@ -729,7 +729,7 @@ xfs_bulkstat( /* * Done, we're either out of filesystem or space to put the data. */ - kmem_free(irbuf); + kmem_free_large(irbuf); *ubcountp = ubelem; /* * Found some inodes, return them now and return the error next time. @@ -849,9 +849,7 @@ xfs_inumbers( agbp = NULL; while (left > 0 && agno < mp->m_sb.sb_agcount) { if (agbp == NULL) { - down_read(&mp->m_peraglock); error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp); - up_read(&mp->m_peraglock); if (error) { /* * If we can't read the AGI of this ag, diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c index 600b5b0..4f16be4 100644 --- a/fs/xfs/xfs_log.c +++ b/fs/xfs/xfs_log.c @@ -50,7 +50,6 @@ kmem_zone_t *xfs_log_ticket_zone; (off) += (bytes);} /* Local miscellaneous function prototypes */ -STATIC int xlog_bdstrat_cb(struct xfs_buf *); STATIC int xlog_commit_record(xfs_mount_t *mp, xlog_ticket_t *ticket, xlog_in_core_t **, xfs_lsn_t *); STATIC xlog_t * xlog_alloc_log(xfs_mount_t *mp, @@ -80,11 +79,6 @@ STATIC int xlog_state_release_iclog(xlog_t *log, STATIC void xlog_state_switch_iclogs(xlog_t *log, xlog_in_core_t *iclog, int eventual_size); -STATIC int xlog_state_sync(xlog_t *log, - xfs_lsn_t lsn, - uint flags, - int *log_flushed); -STATIC int xlog_state_sync_all(xlog_t *log, uint flags, int *log_flushed); STATIC void xlog_state_want_sync(xlog_t *log, xlog_in_core_t *iclog); /* local functions to manipulate grant head */ @@ -297,65 +291,6 @@ xfs_log_done(xfs_mount_t *mp, return lsn; } /* xfs_log_done */ - -/* - * Force the in-core log to disk. If flags == XFS_LOG_SYNC, - * the force is done synchronously. - * - * Asynchronous forces are implemented by setting the WANT_SYNC - * bit in the appropriate in-core log and then returning. - * - * Synchronous forces are implemented with a signal variable. All callers - * to force a given lsn to disk will wait on a the sv attached to the - * specific in-core log. When given in-core log finally completes its - * write to disk, that thread will wake up all threads waiting on the - * sv. - */ -int -_xfs_log_force( - xfs_mount_t *mp, - xfs_lsn_t lsn, - uint flags, - int *log_flushed) -{ - xlog_t *log = mp->m_log; - int dummy; - - if (!log_flushed) - log_flushed = &dummy; - - ASSERT(flags & XFS_LOG_FORCE); - - XFS_STATS_INC(xs_log_force); - - if (log->l_flags & XLOG_IO_ERROR) - return XFS_ERROR(EIO); - if (lsn == 0) - return xlog_state_sync_all(log, flags, log_flushed); - else - return xlog_state_sync(log, lsn, flags, log_flushed); -} /* _xfs_log_force */ - -/* - * Wrapper for _xfs_log_force(), to be used when caller doesn't care - * about errors or whether the log was flushed or not. This is the normal - * interface to use when trying to unpin items or move the log forward. - */ -void -xfs_log_force( - xfs_mount_t *mp, - xfs_lsn_t lsn, - uint flags) -{ - int error; - error = _xfs_log_force(mp, lsn, flags, NULL); - if (error) { - xfs_fs_cmn_err(CE_WARN, mp, "xfs_log_force: " - "error %d returned.", error); - } -} - - /* * Attaches a new iclog I/O completion callback routine during * transaction commit. If the log is in error state, a non-zero @@ -602,7 +537,7 @@ xfs_log_unmount_write(xfs_mount_t *mp) if (mp->m_flags & XFS_MOUNT_RDONLY) return 0; - error = _xfs_log_force(mp, 0, XFS_LOG_FORCE|XFS_LOG_SYNC, NULL); + error = _xfs_log_force(mp, XFS_LOG_SYNC, NULL); ASSERT(error || !(XLOG_FORCED_SHUTDOWN(log))); #ifdef DEBUG @@ -618,7 +553,7 @@ xfs_log_unmount_write(xfs_mount_t *mp) if (! (XLOG_FORCED_SHUTDOWN(log))) { reg[0].i_addr = (void*)&magic; reg[0].i_len = sizeof(magic); - XLOG_VEC_SET_TYPE(®[0], XLOG_REG_TYPE_UNMOUNT); + reg[0].i_type = XLOG_REG_TYPE_UNMOUNT; error = xfs_log_reserve(mp, 600, 1, &tic, XFS_LOG, 0, XLOG_UNMOUNT_REC_TYPE); @@ -988,35 +923,6 @@ xlog_iodone(xfs_buf_t *bp) } /* xlog_iodone */ /* - * The bdstrat callback function for log bufs. This gives us a central - * place to trap bufs in case we get hit by a log I/O error and need to - * shutdown. Actually, in practice, even when we didn't get a log error, - * we transition the iclogs to IOERROR state *after* flushing all existing - * iclogs to disk. This is because we don't want anymore new transactions to be - * started or completed afterwards. - */ -STATIC int -xlog_bdstrat_cb(struct xfs_buf *bp) -{ - xlog_in_core_t *iclog; - - iclog = XFS_BUF_FSPRIVATE(bp, xlog_in_core_t *); - - if ((iclog->ic_state & XLOG_STATE_IOERROR) == 0) { - /* note for irix bstrat will need struct bdevsw passed - * Fix the following macro if the code ever is merged - */ - XFS_bdstrat(bp); - return 0; - } - - XFS_BUF_ERROR(bp, EIO); - XFS_BUF_STALE(bp); - xfs_biodone(bp); - return XFS_ERROR(EIO); -} - -/* * Return size of each in-core log record buffer. * * All machines get 8 x 32kB buffers by default, unless tuned otherwise. @@ -1158,7 +1064,6 @@ xlog_alloc_log(xfs_mount_t *mp, if (!bp) goto out_free_log; XFS_BUF_SET_IODONE_FUNC(bp, xlog_iodone); - XFS_BUF_SET_BDSTRAT_FUNC(bp, xlog_bdstrat_cb); XFS_BUF_SET_FSPRIVATE2(bp, (unsigned long)1); ASSERT(XFS_BUF_ISBUSY(bp)); ASSERT(XFS_BUF_VALUSEMA(bp) <= 0); @@ -1196,7 +1101,6 @@ xlog_alloc_log(xfs_mount_t *mp, if (!XFS_BUF_CPSEMA(bp)) ASSERT(0); XFS_BUF_SET_IODONE_FUNC(bp, xlog_iodone); - XFS_BUF_SET_BDSTRAT_FUNC(bp, xlog_bdstrat_cb); XFS_BUF_SET_FSPRIVATE2(bp, (unsigned long)1); iclog->ic_bp = bp; iclog->ic_data = bp->b_addr; @@ -1268,7 +1172,7 @@ xlog_commit_record(xfs_mount_t *mp, reg[0].i_addr = NULL; reg[0].i_len = 0; - XLOG_VEC_SET_TYPE(®[0], XLOG_REG_TYPE_COMMIT); + reg[0].i_type = XLOG_REG_TYPE_COMMIT; ASSERT_ALWAYS(iclog); if ((error = xlog_write(mp, reg, 1, ticket, commitlsnp, @@ -1343,6 +1247,37 @@ xlog_grant_push_ail(xfs_mount_t *mp, xfs_trans_ail_push(log->l_ailp, threshold_lsn); } /* xlog_grant_push_ail */ +/* + * The bdstrat callback function for log bufs. This gives us a central + * place to trap bufs in case we get hit by a log I/O error and need to + * shutdown. Actually, in practice, even when we didn't get a log error, + * we transition the iclogs to IOERROR state *after* flushing all existing + * iclogs to disk. This is because we don't want anymore new transactions to be + * started or completed afterwards. + */ +STATIC int +xlog_bdstrat( + struct xfs_buf *bp) +{ + struct xlog_in_core *iclog; + + iclog = XFS_BUF_FSPRIVATE(bp, xlog_in_core_t *); + if (iclog->ic_state & XLOG_STATE_IOERROR) { + XFS_BUF_ERROR(bp, EIO); + XFS_BUF_STALE(bp); + xfs_biodone(bp); + /* + * It would seem logical to return EIO here, but we rely on + * the log state machine to propagate I/O errors instead of + * doing it here. + */ + return 0; + } + + bp->b_flags |= _XBF_RUN_QUEUES; + xfs_buf_iorequest(bp); + return 0; +} /* * Flush out the in-core log (iclog) to the on-disk log in an asynchronous @@ -1462,7 +1397,7 @@ xlog_sync(xlog_t *log, */ XFS_BUF_WRITE(bp); - if ((error = XFS_bwrite(bp))) { + if ((error = xlog_bdstrat(bp))) { xfs_ioerror_alert("xlog_sync", log->l_mp, bp, XFS_BUF_ADDR(bp)); return error; @@ -1502,7 +1437,7 @@ xlog_sync(xlog_t *log, /* account for internal log which doesn't start at block #0 */ XFS_BUF_SET_ADDR(bp, XFS_BUF_ADDR(bp) + log->l_logBBstart); XFS_BUF_WRITE(bp); - if ((error = XFS_bwrite(bp))) { + if ((error = xlog_bdstrat(bp))) { xfs_ioerror_alert("xlog_sync (split)", log->l_mp, bp, XFS_BUF_ADDR(bp)); return error; @@ -2854,7 +2789,6 @@ xlog_state_switch_iclogs(xlog_t *log, log->l_iclog = iclog->ic_next; } /* xlog_state_switch_iclogs */ - /* * Write out all data in the in-core log as of this exact moment in time. * @@ -2882,11 +2816,17 @@ xlog_state_switch_iclogs(xlog_t *log, * b) when we return from flushing out this iclog, it is still * not in the active nor dirty state. */ -STATIC int -xlog_state_sync_all(xlog_t *log, uint flags, int *log_flushed) +int +_xfs_log_force( + struct xfs_mount *mp, + uint flags, + int *log_flushed) { - xlog_in_core_t *iclog; - xfs_lsn_t lsn; + struct log *log = mp->m_log; + struct xlog_in_core *iclog; + xfs_lsn_t lsn; + + XFS_STATS_INC(xs_log_force); spin_lock(&log->l_icloglock); @@ -2932,7 +2872,9 @@ xlog_state_sync_all(xlog_t *log, uint flags, int *log_flushed) if (xlog_state_release_iclog(log, iclog)) return XFS_ERROR(EIO); - *log_flushed = 1; + + if (log_flushed) + *log_flushed = 1; spin_lock(&log->l_icloglock); if (be64_to_cpu(iclog->ic_header.h_lsn) == lsn && iclog->ic_state != XLOG_STATE_DIRTY) @@ -2976,19 +2918,37 @@ maybe_sleep: */ if (iclog->ic_state & XLOG_STATE_IOERROR) return XFS_ERROR(EIO); - *log_flushed = 1; - + if (log_flushed) + *log_flushed = 1; } else { no_sleep: spin_unlock(&log->l_icloglock); } return 0; -} /* xlog_state_sync_all */ +} +/* + * Wrapper for _xfs_log_force(), to be used when caller doesn't care + * about errors or whether the log was flushed or not. This is the normal + * interface to use when trying to unpin items or move the log forward. + */ +void +xfs_log_force( + xfs_mount_t *mp, + uint flags) +{ + int error; + + error = _xfs_log_force(mp, flags, NULL); + if (error) { + xfs_fs_cmn_err(CE_WARN, mp, "xfs_log_force: " + "error %d returned.", error); + } +} /* - * Used by code which implements synchronous log forces. + * Force the in-core log to disk for a specific LSN. * * Find in-core log with lsn. * If it is in the DIRTY state, just return. @@ -2996,109 +2956,142 @@ no_sleep: * state and go to sleep or return. * If it is in any other state, go to sleep or return. * - * If filesystem activity goes to zero, the iclog will get flushed only by - * bdflush(). + * Synchronous forces are implemented with a signal variable. All callers + * to force a given lsn to disk will wait on a the sv attached to the + * specific in-core log. When given in-core log finally completes its + * write to disk, that thread will wake up all threads waiting on the + * sv. */ -STATIC int -xlog_state_sync(xlog_t *log, - xfs_lsn_t lsn, - uint flags, - int *log_flushed) +int +_xfs_log_force_lsn( + struct xfs_mount *mp, + xfs_lsn_t lsn, + uint flags, + int *log_flushed) { - xlog_in_core_t *iclog; - int already_slept = 0; + struct log *log = mp->m_log; + struct xlog_in_core *iclog; + int already_slept = 0; -try_again: - spin_lock(&log->l_icloglock); - iclog = log->l_iclog; + ASSERT(lsn != 0); - if (iclog->ic_state & XLOG_STATE_IOERROR) { - spin_unlock(&log->l_icloglock); - return XFS_ERROR(EIO); - } - - do { - if (be64_to_cpu(iclog->ic_header.h_lsn) != lsn) { - iclog = iclog->ic_next; - continue; - } + XFS_STATS_INC(xs_log_force); - if (iclog->ic_state == XLOG_STATE_DIRTY) { +try_again: + spin_lock(&log->l_icloglock); + iclog = log->l_iclog; + if (iclog->ic_state & XLOG_STATE_IOERROR) { spin_unlock(&log->l_icloglock); - return 0; + return XFS_ERROR(EIO); } - if (iclog->ic_state == XLOG_STATE_ACTIVE) { - /* - * We sleep here if we haven't already slept (e.g. - * this is the first time we've looked at the correct - * iclog buf) and the buffer before us is going to - * be sync'ed. The reason for this is that if we - * are doing sync transactions here, by waiting for - * the previous I/O to complete, we can allow a few - * more transactions into this iclog before we close - * it down. - * - * Otherwise, we mark the buffer WANT_SYNC, and bump - * up the refcnt so we can release the log (which drops - * the ref count). The state switch keeps new transaction - * commits from using this buffer. When the current commits - * finish writing into the buffer, the refcount will drop to - * zero and the buffer will go out then. - */ - if (!already_slept && - (iclog->ic_prev->ic_state & (XLOG_STATE_WANT_SYNC | - XLOG_STATE_SYNCING))) { - ASSERT(!(iclog->ic_state & XLOG_STATE_IOERROR)); - XFS_STATS_INC(xs_log_force_sleep); - sv_wait(&iclog->ic_prev->ic_write_wait, PSWP, - &log->l_icloglock, s); - *log_flushed = 1; - already_slept = 1; - goto try_again; - } else { + do { + if (be64_to_cpu(iclog->ic_header.h_lsn) != lsn) { + iclog = iclog->ic_next; + continue; + } + + if (iclog->ic_state == XLOG_STATE_DIRTY) { + spin_unlock(&log->l_icloglock); + return 0; + } + + if (iclog->ic_state == XLOG_STATE_ACTIVE) { + /* + * We sleep here if we haven't already slept (e.g. + * this is the first time we've looked at the correct + * iclog buf) and the buffer before us is going to + * be sync'ed. The reason for this is that if we + * are doing sync transactions here, by waiting for + * the previous I/O to complete, we can allow a few + * more transactions into this iclog before we close + * it down. + * + * Otherwise, we mark the buffer WANT_SYNC, and bump + * up the refcnt so we can release the log (which + * drops the ref count). The state switch keeps new + * transaction commits from using this buffer. When + * the current commits finish writing into the buffer, + * the refcount will drop to zero and the buffer will + * go out then. + */ + if (!already_slept && + (iclog->ic_prev->ic_state & + (XLOG_STATE_WANT_SYNC | XLOG_STATE_SYNCING))) { + ASSERT(!(iclog->ic_state & XLOG_STATE_IOERROR)); + + XFS_STATS_INC(xs_log_force_sleep); + + sv_wait(&iclog->ic_prev->ic_write_wait, + PSWP, &log->l_icloglock, s); + if (log_flushed) + *log_flushed = 1; + already_slept = 1; + goto try_again; + } atomic_inc(&iclog->ic_refcnt); xlog_state_switch_iclogs(log, iclog, 0); spin_unlock(&log->l_icloglock); if (xlog_state_release_iclog(log, iclog)) return XFS_ERROR(EIO); - *log_flushed = 1; + if (log_flushed) + *log_flushed = 1; spin_lock(&log->l_icloglock); } - } - if ((flags & XFS_LOG_SYNC) && /* sleep */ - !(iclog->ic_state & (XLOG_STATE_ACTIVE | XLOG_STATE_DIRTY))) { + if ((flags & XFS_LOG_SYNC) && /* sleep */ + !(iclog->ic_state & + (XLOG_STATE_ACTIVE | XLOG_STATE_DIRTY))) { + /* + * Don't wait on completion if we know that we've + * gotten a log write error. + */ + if (iclog->ic_state & XLOG_STATE_IOERROR) { + spin_unlock(&log->l_icloglock); + return XFS_ERROR(EIO); + } + XFS_STATS_INC(xs_log_force_sleep); + sv_wait(&iclog->ic_force_wait, PSWP, &log->l_icloglock, s); + /* + * No need to grab the log lock here since we're + * only deciding whether or not to return EIO + * and the memory read should be atomic. + */ + if (iclog->ic_state & XLOG_STATE_IOERROR) + return XFS_ERROR(EIO); - /* - * Don't wait on completion if we know that we've - * gotten a log write error. - */ - if (iclog->ic_state & XLOG_STATE_IOERROR) { + if (log_flushed) + *log_flushed = 1; + } else { /* just return */ spin_unlock(&log->l_icloglock); - return XFS_ERROR(EIO); } - XFS_STATS_INC(xs_log_force_sleep); - sv_wait(&iclog->ic_force_wait, PSWP, &log->l_icloglock, s); - /* - * No need to grab the log lock here since we're - * only deciding whether or not to return EIO - * and the memory read should be atomic. - */ - if (iclog->ic_state & XLOG_STATE_IOERROR) - return XFS_ERROR(EIO); - *log_flushed = 1; - } else { /* just return */ - spin_unlock(&log->l_icloglock); - } - return 0; - } while (iclog != log->l_iclog); + return 0; + } while (iclog != log->l_iclog); - spin_unlock(&log->l_icloglock); - return 0; -} /* xlog_state_sync */ + spin_unlock(&log->l_icloglock); + return 0; +} +/* + * Wrapper for _xfs_log_force_lsn(), to be used when caller doesn't care + * about errors or whether the log was flushed or not. This is the normal + * interface to use when trying to unpin items or move the log forward. + */ +void +xfs_log_force_lsn( + xfs_mount_t *mp, + xfs_lsn_t lsn, + uint flags) +{ + int error; + + error = _xfs_log_force_lsn(mp, lsn, flags, NULL); + if (error) { + xfs_fs_cmn_err(CE_WARN, mp, "xfs_log_force: " + "error %d returned.", error); + } +} /* * Called when we want to mark the current iclog as being ready to sync to @@ -3463,7 +3456,6 @@ xfs_log_force_umount( xlog_ticket_t *tic; xlog_t *log; int retval; - int dummy; log = mp->m_log; @@ -3537,13 +3529,14 @@ xfs_log_force_umount( } spin_unlock(&log->l_grant_lock); - if (! (log->l_iclog->ic_state & XLOG_STATE_IOERROR)) { + if (!(log->l_iclog->ic_state & XLOG_STATE_IOERROR)) { ASSERT(!logerror); /* * Force the incore logs to disk before shutting the * log down completely. */ - xlog_state_sync_all(log, XFS_LOG_FORCE|XFS_LOG_SYNC, &dummy); + _xfs_log_force(mp, XFS_LOG_SYNC, NULL); + spin_lock(&log->l_icloglock); retval = xlog_state_ioerror(log); spin_unlock(&log->l_icloglock); diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h index d0c9baa..7074be9 100644 --- a/fs/xfs/xfs_log.h +++ b/fs/xfs/xfs_log.h @@ -70,14 +70,8 @@ static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2) * Flags to xfs_log_force() * * XFS_LOG_SYNC: Synchronous force in-core log to disk - * XFS_LOG_FORCE: Start in-core log write now. - * XFS_LOG_URGE: Start write within some window of time. - * - * Note: Either XFS_LOG_FORCE or XFS_LOG_URGE must be set. */ #define XFS_LOG_SYNC 0x1 -#define XFS_LOG_FORCE 0x2 -#define XFS_LOG_URGE 0x4 #endif /* __KERNEL__ */ @@ -110,10 +104,8 @@ static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2) #define XLOG_REG_TYPE_TRANSHDR 19 #define XLOG_REG_TYPE_MAX 19 -#define XLOG_VEC_SET_TYPE(vecp, t) ((vecp)->i_type = (t)) - typedef struct xfs_log_iovec { - xfs_caddr_t i_addr; /* beginning address of region */ + xfs_caddr_t i_addr; /* beginning address of region */ int i_len; /* length in bytes of region */ uint i_type; /* type of region */ } xfs_log_iovec_t; @@ -140,12 +132,17 @@ xfs_lsn_t xfs_log_done(struct xfs_mount *mp, void **iclog, uint flags); int _xfs_log_force(struct xfs_mount *mp, - xfs_lsn_t lsn, uint flags, int *log_forced); void xfs_log_force(struct xfs_mount *mp, - xfs_lsn_t lsn, uint flags); +int _xfs_log_force_lsn(struct xfs_mount *mp, + xfs_lsn_t lsn, + uint flags, + int *log_forced); +void xfs_log_force_lsn(struct xfs_mount *mp, + xfs_lsn_t lsn, + uint flags); int xfs_log_mount(struct xfs_mount *mp, struct xfs_buftarg *log_target, xfs_daddr_t start_block, diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h index d55662d..fd02a18 100644 --- a/fs/xfs/xfs_log_priv.h +++ b/fs/xfs/xfs_log_priv.h @@ -443,14 +443,9 @@ typedef struct log { /* common routines */ extern xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp); -extern int xlog_find_tail(xlog_t *log, - xfs_daddr_t *head_blk, - xfs_daddr_t *tail_blk); extern int xlog_recover(xlog_t *log); extern int xlog_recover_finish(xlog_t *log); extern void xlog_pack_data(xlog_t *log, xlog_in_core_t *iclog, int); -extern struct xfs_buf *xlog_get_bp(xlog_t *, int); -extern void xlog_put_bp(struct xfs_buf *); extern kmem_zone_t *xfs_log_ticket_zone; diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c index 69ac2e5..22e6efd 100644 --- a/fs/xfs/xfs_log_recover.c +++ b/fs/xfs/xfs_log_recover.c @@ -50,8 +50,6 @@ STATIC int xlog_find_zeroed(xlog_t *, xfs_daddr_t *); STATIC int xlog_clear_stale_blocks(xlog_t *, xfs_lsn_t); -STATIC void xlog_recover_insert_item_backq(xlog_recover_item_t **q, - xlog_recover_item_t *item); #if defined(DEBUG) STATIC void xlog_recover_check_summary(xlog_t *); #else @@ -68,7 +66,7 @@ STATIC void xlog_recover_check_summary(xlog_t *); ((bbs + (log)->l_sectbb_mask + 1) & ~(log)->l_sectbb_mask) : (bbs) ) #define XLOG_SECTOR_ROUNDDOWN_BLKNO(log, bno) ((bno) & ~(log)->l_sectbb_mask) -xfs_buf_t * +STATIC xfs_buf_t * xlog_get_bp( xlog_t *log, int nbblks) @@ -88,7 +86,7 @@ xlog_get_bp( return xfs_buf_get_noaddr(BBTOB(nbblks), log->l_mp->m_logdev_targp); } -void +STATIC void xlog_put_bp( xfs_buf_t *bp) { @@ -805,7 +803,7 @@ xlog_find_head( * We could speed up search by using current head_blk buffer, but it is not * available. */ -int +STATIC int xlog_find_tail( xlog_t *log, xfs_daddr_t *head_blk, @@ -1367,36 +1365,45 @@ xlog_clear_stale_blocks( STATIC xlog_recover_t * xlog_recover_find_tid( - xlog_recover_t *q, + struct hlist_head *head, xlog_tid_t tid) { - xlog_recover_t *p = q; + xlog_recover_t *trans; + struct hlist_node *n; - while (p != NULL) { - if (p->r_log_tid == tid) - break; - p = p->r_next; + hlist_for_each_entry(trans, n, head, r_list) { + if (trans->r_log_tid == tid) + return trans; } - return p; + return NULL; } STATIC void -xlog_recover_put_hashq( - xlog_recover_t **q, - xlog_recover_t *trans) +xlog_recover_new_tid( + struct hlist_head *head, + xlog_tid_t tid, + xfs_lsn_t lsn) { - trans->r_next = *q; - *q = trans; + xlog_recover_t *trans; + + trans = kmem_zalloc(sizeof(xlog_recover_t), KM_SLEEP); + trans->r_log_tid = tid; + trans->r_lsn = lsn; + INIT_LIST_HEAD(&trans->r_itemq); + + INIT_HLIST_NODE(&trans->r_list); + hlist_add_head(&trans->r_list, head); } STATIC void xlog_recover_add_item( - xlog_recover_item_t **itemq) + struct list_head *head) { xlog_recover_item_t *item; item = kmem_zalloc(sizeof(xlog_recover_item_t), KM_SLEEP); - xlog_recover_insert_item_backq(itemq, item); + INIT_LIST_HEAD(&item->ri_list); + list_add_tail(&item->ri_list, head); } STATIC int @@ -1409,8 +1416,7 @@ xlog_recover_add_to_cont_trans( xfs_caddr_t ptr, old_ptr; int old_len; - item = trans->r_itemq; - if (item == NULL) { + if (list_empty(&trans->r_itemq)) { /* finish copying rest of trans header */ xlog_recover_add_item(&trans->r_itemq); ptr = (xfs_caddr_t) &trans->r_theader + @@ -1418,7 +1424,8 @@ xlog_recover_add_to_cont_trans( memcpy(ptr, dp, len); /* d, s, l */ return 0; } - item = item->ri_prev; + /* take the tail entry */ + item = list_entry(trans->r_itemq.prev, xlog_recover_item_t, ri_list); old_ptr = item->ri_buf[item->ri_cnt-1].i_addr; old_len = item->ri_buf[item->ri_cnt-1].i_len; @@ -1455,8 +1462,7 @@ xlog_recover_add_to_trans( if (!len) return 0; - item = trans->r_itemq; - if (item == NULL) { + if (list_empty(&trans->r_itemq)) { /* we need to catch log corruptions here */ if (*(uint *)dp != XFS_TRANS_HEADER_MAGIC) { xlog_warn("XFS: xlog_recover_add_to_trans: " @@ -1474,12 +1480,15 @@ xlog_recover_add_to_trans( memcpy(ptr, dp, len); in_f = (xfs_inode_log_format_t *)ptr; - if (item->ri_prev->ri_total != 0 && - item->ri_prev->ri_total == item->ri_prev->ri_cnt) { + /* take the tail entry */ + item = list_entry(trans->r_itemq.prev, xlog_recover_item_t, ri_list); + if (item->ri_total != 0 && + item->ri_total == item->ri_cnt) { + /* tail item is in use, get a new one */ xlog_recover_add_item(&trans->r_itemq); + item = list_entry(trans->r_itemq.prev, + xlog_recover_item_t, ri_list); } - item = trans->r_itemq; - item = item->ri_prev; if (item->ri_total == 0) { /* first region to be added */ if (in_f->ilf_size == 0 || @@ -1504,96 +1513,29 @@ xlog_recover_add_to_trans( return 0; } -STATIC void -xlog_recover_new_tid( - xlog_recover_t **q, - xlog_tid_t tid, - xfs_lsn_t lsn) -{ - xlog_recover_t *trans; - - trans = kmem_zalloc(sizeof(xlog_recover_t), KM_SLEEP); - trans->r_log_tid = tid; - trans->r_lsn = lsn; - xlog_recover_put_hashq(q, trans); -} - -STATIC int -xlog_recover_unlink_tid( - xlog_recover_t **q, - xlog_recover_t *trans) -{ - xlog_recover_t *tp; - int found = 0; - - ASSERT(trans != NULL); - if (trans == *q) { - *q = (*q)->r_next; - } else { - tp = *q; - while (tp) { - if (tp->r_next == trans) { - found = 1; - break; - } - tp = tp->r_next; - } - if (!found) { - xlog_warn( - "XFS: xlog_recover_unlink_tid: trans not found"); - ASSERT(0); - return XFS_ERROR(EIO); - } - tp->r_next = tp->r_next->r_next; - } - return 0; -} - -STATIC void -xlog_recover_insert_item_backq( - xlog_recover_item_t **q, - xlog_recover_item_t *item) -{ - if (*q == NULL) { - item->ri_prev = item->ri_next = item; - *q = item; - } else { - item->ri_next = *q; - item->ri_prev = (*q)->ri_prev; - (*q)->ri_prev = item; - item->ri_prev->ri_next = item; - } -} - -STATIC void -xlog_recover_insert_item_frontq( - xlog_recover_item_t **q, - xlog_recover_item_t *item) -{ - xlog_recover_insert_item_backq(q, item); - *q = item; -} - +/* + * Sort the log items in the transaction. Cancelled buffers need + * to be put first so they are processed before any items that might + * modify the buffers. If they are cancelled, then the modifications + * don't need to be replayed. + */ STATIC int xlog_recover_reorder_trans( xlog_recover_t *trans) { - xlog_recover_item_t *first_item, *itemq, *itemq_next; - xfs_buf_log_format_t *buf_f; - ushort flags = 0; + xlog_recover_item_t *item, *n; + LIST_HEAD(sort_list); - first_item = itemq = trans->r_itemq; - trans->r_itemq = NULL; - do { - itemq_next = itemq->ri_next; - buf_f = (xfs_buf_log_format_t *)itemq->ri_buf[0].i_addr; + list_splice_init(&trans->r_itemq, &sort_list); + list_for_each_entry_safe(item, n, &sort_list, ri_list) { + xfs_buf_log_format_t *buf_f; - switch (ITEM_TYPE(itemq)) { + buf_f = (xfs_buf_log_format_t *)item->ri_buf[0].i_addr; + + switch (ITEM_TYPE(item)) { case XFS_LI_BUF: - flags = buf_f->blf_flags; - if (!(flags & XFS_BLI_CANCEL)) { - xlog_recover_insert_item_frontq(&trans->r_itemq, - itemq); + if (!(buf_f->blf_flags & XFS_BLI_CANCEL)) { + list_move(&item->ri_list, &trans->r_itemq); break; } case XFS_LI_INODE: @@ -1601,7 +1543,7 @@ xlog_recover_reorder_trans( case XFS_LI_QUOTAOFF: case XFS_LI_EFD: case XFS_LI_EFI: - xlog_recover_insert_item_backq(&trans->r_itemq, itemq); + list_move_tail(&item->ri_list, &trans->r_itemq); break; default: xlog_warn( @@ -1609,8 +1551,8 @@ xlog_recover_reorder_trans( ASSERT(0); return XFS_ERROR(EIO); } - itemq = itemq_next; - } while (first_item != itemq); + } + ASSERT(list_empty(&sort_list)); return 0; } @@ -2242,9 +2184,9 @@ xlog_recover_do_buffer_trans( } mp = log->l_mp; - buf_flags = XFS_BUF_LOCK; + buf_flags = XBF_LOCK; if (!(flags & XFS_BLI_INODE_BUF)) - buf_flags |= XFS_BUF_MAPPED; + buf_flags |= XBF_MAPPED; bp = xfs_buf_read(mp->m_ddev_targp, blkno, len, buf_flags); if (XFS_BUF_ISERROR(bp)) { @@ -2346,7 +2288,7 @@ xlog_recover_do_inode_trans( } bp = xfs_buf_read(mp->m_ddev_targp, in_f->ilf_blkno, in_f->ilf_len, - XFS_BUF_LOCK); + XBF_LOCK); if (XFS_BUF_ISERROR(bp)) { xfs_ioerror_alert("xlog_recover_do..(read#2)", mp, bp, in_f->ilf_blkno); @@ -2814,14 +2756,13 @@ xlog_recover_do_trans( int pass) { int error = 0; - xlog_recover_item_t *item, *first_item; + xlog_recover_item_t *item; error = xlog_recover_reorder_trans(trans); if (error) return error; - first_item = item = trans->r_itemq; - do { + list_for_each_entry(item, &trans->r_itemq, ri_list) { switch (ITEM_TYPE(item)) { case XFS_LI_BUF: error = xlog_recover_do_buffer_trans(log, item, pass); @@ -2854,8 +2795,7 @@ xlog_recover_do_trans( if (error) return error; - item = item->ri_next; - } while (first_item != item); + } return 0; } @@ -2869,21 +2809,18 @@ STATIC void xlog_recover_free_trans( xlog_recover_t *trans) { - xlog_recover_item_t *first_item, *item, *free_item; + xlog_recover_item_t *item, *n; int i; - item = first_item = trans->r_itemq; - do { - free_item = item; - item = item->ri_next; - /* Free the regions in the item. */ - for (i = 0; i < free_item->ri_cnt; i++) { - kmem_free(free_item->ri_buf[i].i_addr); - } + list_for_each_entry_safe(item, n, &trans->r_itemq, ri_list) { + /* Free the regions in the item. */ + list_del(&item->ri_list); + for (i = 0; i < item->ri_cnt; i++) + kmem_free(item->ri_buf[i].i_addr); /* Free the item itself */ - kmem_free(free_item->ri_buf); - kmem_free(free_item); - } while (first_item != item); + kmem_free(item->ri_buf); + kmem_free(item); + } /* Free the transaction recover structure */ kmem_free(trans); } @@ -2891,14 +2828,12 @@ xlog_recover_free_trans( STATIC int xlog_recover_commit_trans( xlog_t *log, - xlog_recover_t **q, xlog_recover_t *trans, int pass) { int error; - if ((error = xlog_recover_unlink_tid(q, trans))) - return error; + hlist_del(&trans->r_list); if ((error = xlog_recover_do_trans(log, trans, pass))) return error; xlog_recover_free_trans(trans); /* no error */ @@ -2926,7 +2861,7 @@ xlog_recover_unmount_trans( STATIC int xlog_recover_process_data( xlog_t *log, - xlog_recover_t *rhash[], + struct hlist_head rhash[], xlog_rec_header_t *rhead, xfs_caddr_t dp, int pass) @@ -2960,7 +2895,7 @@ xlog_recover_process_data( } tid = be32_to_cpu(ohead->oh_tid); hash = XLOG_RHASH(tid); - trans = xlog_recover_find_tid(rhash[hash], tid); + trans = xlog_recover_find_tid(&rhash[hash], tid); if (trans == NULL) { /* not found; add new tid */ if (ohead->oh_flags & XLOG_START_TRANS) xlog_recover_new_tid(&rhash[hash], tid, @@ -2978,7 +2913,7 @@ xlog_recover_process_data( switch (flags) { case XLOG_COMMIT_TRANS: error = xlog_recover_commit_trans(log, - &rhash[hash], trans, pass); + trans, pass); break; case XLOG_UNMOUNT_TRANS: error = xlog_recover_unmount_trans(trans); @@ -3211,7 +3146,7 @@ xlog_recover_process_one_iunlink( /* * Get the on disk inode to find the next inode in the bucket. */ - error = xfs_itobp(mp, NULL, ip, &dip, &ibp, XFS_BUF_LOCK); + error = xfs_itobp(mp, NULL, ip, &dip, &ibp, XBF_LOCK); if (error) goto fail_iput; @@ -3517,7 +3452,7 @@ xlog_do_recovery_pass( int error = 0, h_size; int bblks, split_bblks; int hblks, split_hblks, wrapped_hblks; - xlog_recover_t *rhash[XLOG_RHASH_SIZE]; + struct hlist_head rhash[XLOG_RHASH_SIZE]; ASSERT(head_blk != tail_blk); @@ -3978,8 +3913,7 @@ xlog_recover_finish( * case the unlink transactions would have problems * pushing the EFIs out of the way. */ - xfs_log_force(log->l_mp, (xfs_lsn_t)0, - (XFS_LOG_FORCE | XFS_LOG_SYNC)); + xfs_log_force(log->l_mp, XFS_LOG_SYNC); xlog_recover_process_iunlinks(log); diff --git a/fs/xfs/xfs_log_recover.h b/fs/xfs/xfs_log_recover.h index b225455..75d7492 100644 --- a/fs/xfs/xfs_log_recover.h +++ b/fs/xfs/xfs_log_recover.h @@ -35,22 +35,21 @@ * item headers are in ri_buf[0]. Additional buffers follow. */ typedef struct xlog_recover_item { - struct xlog_recover_item *ri_next; - struct xlog_recover_item *ri_prev; - int ri_type; - int ri_cnt; /* count of regions found */ - int ri_total; /* total regions */ - xfs_log_iovec_t *ri_buf; /* ptr to regions buffer */ + struct list_head ri_list; + int ri_type; + int ri_cnt; /* count of regions found */ + int ri_total; /* total regions */ + xfs_log_iovec_t *ri_buf; /* ptr to regions buffer */ } xlog_recover_item_t; struct xlog_tid; typedef struct xlog_recover { - struct xlog_recover *r_next; - xlog_tid_t r_log_tid; /* log's transaction id */ - xfs_trans_header_t r_theader; /* trans header for partial */ - int r_state; /* not needed */ - xfs_lsn_t r_lsn; /* xact lsn */ - xlog_recover_item_t *r_itemq; /* q for items */ + struct hlist_node r_list; + xlog_tid_t r_log_tid; /* log's transaction id */ + xfs_trans_header_t r_theader; /* trans header for partial */ + int r_state; /* not needed */ + xfs_lsn_t r_lsn; /* xact lsn */ + struct list_head r_itemq; /* q for items */ } xlog_recover_t; #define ITEM_TYPE(i) (*(ushort *)(i)->ri_buf[0].i_addr) diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c index eb403b4..6afaaeb 100644 --- a/fs/xfs/xfs_mount.c +++ b/fs/xfs/xfs_mount.c @@ -201,6 +201,38 @@ xfs_uuid_unmount( /* + * Reference counting access wrappers to the perag structures. + */ +struct xfs_perag * +xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno) +{ + struct xfs_perag *pag; + int ref = 0; + + spin_lock(&mp->m_perag_lock); + pag = radix_tree_lookup(&mp->m_perag_tree, agno); + if (pag) { + ASSERT(atomic_read(&pag->pag_ref) >= 0); + /* catch leaks in the positive direction during testing */ + ASSERT(atomic_read(&pag->pag_ref) < 1000); + ref = atomic_inc_return(&pag->pag_ref); + } + spin_unlock(&mp->m_perag_lock); + trace_xfs_perag_get(mp, agno, ref, _RET_IP_); + return pag; +} + +void +xfs_perag_put(struct xfs_perag *pag) +{ + int ref; + + ASSERT(atomic_read(&pag->pag_ref) > 0); + ref = atomic_dec_return(&pag->pag_ref); + trace_xfs_perag_put(pag->pag_mount, pag->pag_agno, ref, _RET_IP_); +} + +/* * Free up the resources associated with a mount structure. Assume that * the structure was initially zeroed, so we can tell which fields got * initialized. @@ -209,13 +241,16 @@ STATIC void xfs_free_perag( xfs_mount_t *mp) { - if (mp->m_perag) { - int agno; + xfs_agnumber_t agno; + struct xfs_perag *pag; - for (agno = 0; agno < mp->m_maxagi; agno++) - if (mp->m_perag[agno].pagb_list) - kmem_free(mp->m_perag[agno].pagb_list); - kmem_free(mp->m_perag); + for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) { + spin_lock(&mp->m_perag_lock); + pag = radix_tree_delete(&mp->m_perag_tree, agno); + ASSERT(pag); + ASSERT(atomic_read(&pag->pag_ref) == 0); + spin_unlock(&mp->m_perag_lock); + kmem_free(pag); } } @@ -389,22 +424,57 @@ xfs_initialize_perag_icache( } } -xfs_agnumber_t +int xfs_initialize_perag( xfs_mount_t *mp, - xfs_agnumber_t agcount) + xfs_agnumber_t agcount, + xfs_agnumber_t *maxagi) { xfs_agnumber_t index, max_metadata; + xfs_agnumber_t first_initialised = 0; xfs_perag_t *pag; xfs_agino_t agino; xfs_ino_t ino; xfs_sb_t *sbp = &mp->m_sb; xfs_ino_t max_inum = XFS_MAXINUMBER_32; + int error = -ENOMEM; /* Check to see if the filesystem can overflow 32 bit inodes */ agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks - 1, 0); ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino); + /* + * Walk the current per-ag tree so we don't try to initialise AGs + * that already exist (growfs case). Allocate and insert all the + * AGs we don't find ready for initialisation. + */ + for (index = 0; index < agcount; index++) { + pag = xfs_perag_get(mp, index); + if (pag) { + xfs_perag_put(pag); + continue; + } + if (!first_initialised) + first_initialised = index; + pag = kmem_zalloc(sizeof(*pag), KM_MAYFAIL); + if (!pag) + goto out_unwind; + if (radix_tree_preload(GFP_NOFS)) + goto out_unwind; + spin_lock(&mp->m_perag_lock); + if (radix_tree_insert(&mp->m_perag_tree, index, pag)) { + BUG(); + spin_unlock(&mp->m_perag_lock); + radix_tree_preload_end(); + error = -EEXIST; + goto out_unwind; + } + pag->pag_agno = index; + pag->pag_mount = mp; + spin_unlock(&mp->m_perag_lock); + radix_tree_preload_end(); + } + /* Clear the mount flag if no inode can overflow 32 bits * on this filesystem, or if specifically requested.. */ @@ -438,21 +508,33 @@ xfs_initialize_perag( } /* This ag is preferred for inodes */ - pag = &mp->m_perag[index]; + pag = xfs_perag_get(mp, index); pag->pagi_inodeok = 1; if (index < max_metadata) pag->pagf_metadata = 1; xfs_initialize_perag_icache(pag); + xfs_perag_put(pag); } } else { /* Setup default behavior for smaller filesystems */ for (index = 0; index < agcount; index++) { - pag = &mp->m_perag[index]; + pag = xfs_perag_get(mp, index); pag->pagi_inodeok = 1; xfs_initialize_perag_icache(pag); + xfs_perag_put(pag); } } - return index; + if (maxagi) + *maxagi = index; + return 0; + +out_unwind: + kmem_free(pag); + for (; index > first_initialised; index--) { + pag = radix_tree_delete(&mp->m_perag_tree, index); + kmem_free(pag); + } + return error; } void @@ -583,7 +665,7 @@ xfs_readsb(xfs_mount_t *mp, int flags) * access to the superblock. */ sector_size = xfs_getsize_buftarg(mp->m_ddev_targp); - extra_flags = XFS_BUF_LOCK | XFS_BUF_MANAGE | XFS_BUF_MAPPED; + extra_flags = XBF_LOCK | XBF_FS_MANAGED | XBF_MAPPED; bp = xfs_buf_read(mp->m_ddev_targp, XFS_SB_DADDR, BTOBB(sector_size), extra_flags); @@ -731,12 +813,13 @@ xfs_initialize_perag_data(xfs_mount_t *mp, xfs_agnumber_t agcount) error = xfs_ialloc_pagi_init(mp, NULL, index); if (error) return error; - pag = &mp->m_perag[index]; + pag = xfs_perag_get(mp, index); ifree += pag->pagi_freecount; ialloc += pag->pagi_count; bfree += pag->pagf_freeblks; bfreelst += pag->pagf_flcount; btree += pag->pagf_btreeblks; + xfs_perag_put(pag); } /* * Overwrite incore superblock counters with just-read data @@ -1008,6 +1091,22 @@ xfs_mount_reset_sbqflags( return xfs_trans_commit(tp, 0); } +__uint64_t +xfs_default_resblks(xfs_mount_t *mp) +{ + __uint64_t resblks; + + /* + * We default to 5% or 1024 fsbs of space reserved, whichever is smaller. + * This may drive us straight to ENOSPC on mount, but that implies + * we were already there on the last unmount. Warn if this occurs. + */ + resblks = mp->m_sb.sb_dblocks; + do_div(resblks, 20); + resblks = min_t(__uint64_t, resblks, 1024); + return resblks; +} + /* * This function does the following on an initial mount of a file system: * - reads the superblock from disk and init the mount struct @@ -1152,13 +1251,13 @@ xfs_mountfs( /* * Allocate and initialize the per-ag data. */ - init_rwsem(&mp->m_peraglock); - mp->m_perag = kmem_zalloc(sbp->sb_agcount * sizeof(xfs_perag_t), - KM_MAYFAIL); - if (!mp->m_perag) + spin_lock_init(&mp->m_perag_lock); + INIT_RADIX_TREE(&mp->m_perag_tree, GFP_NOFS); + error = xfs_initialize_perag(mp, sbp->sb_agcount, &mp->m_maxagi); + if (error) { + cmn_err(CE_WARN, "XFS: Failed per-ag init: %d", error); goto out_remove_uuid; - - mp->m_maxagi = xfs_initialize_perag(mp, sbp->sb_agcount); + } if (!sbp->sb_logblocks) { cmn_err(CE_WARN, "XFS: no log defined"); @@ -1318,18 +1417,14 @@ xfs_mountfs( * when at ENOSPC. This is needed for operations like create with * attr, unwritten extent conversion at ENOSPC, etc. Data allocations * are not allowed to use this reserved space. - * - * We default to 5% or 1024 fsbs of space reserved, whichever is smaller. - * This may drive us straight to ENOSPC on mount, but that implies - * we were already there on the last unmount. Warn if this occurs. */ - resblks = mp->m_sb.sb_dblocks; - do_div(resblks, 20); - resblks = min_t(__uint64_t, resblks, 1024); - error = xfs_reserve_blocks(mp, &resblks, NULL); - if (error) - cmn_err(CE_WARN, "XFS: Unable to allocate reserve blocks. " - "Continuing without a reserve pool."); + if (!(mp->m_flags & XFS_MOUNT_RDONLY)) { + resblks = xfs_default_resblks(mp); + error = xfs_reserve_blocks(mp, &resblks, NULL); + if (error) + cmn_err(CE_WARN, "XFS: Unable to allocate reserve " + "blocks. Continuing without a reserve pool."); + } return 0; @@ -1372,8 +1467,19 @@ xfs_unmountfs( * push out the iclog we will never get that unlocked. hence we * need to force the log first. */ - xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC); - xfs_reclaim_inodes(mp, XFS_IFLUSH_ASYNC); + xfs_log_force(mp, XFS_LOG_SYNC); + + /* + * Do a delwri reclaim pass first so that as many dirty inodes are + * queued up for IO as possible. Then flush the buffers before making + * a synchronous path to catch all the remaining inodes are reclaimed. + * This makes the reclaim process as quick as possible by avoiding + * synchronous writeout and blocking on inodes already in the delwri + * state as much as possible. + */ + xfs_reclaim_inodes(mp, 0); + XFS_bflush(mp->m_ddev_targp); + xfs_reclaim_inodes(mp, SYNC_WAIT); xfs_qm_unmount(mp); @@ -1382,7 +1488,7 @@ xfs_unmountfs( * that nothing is pinned. This is important because bflush() * will skip pinned buffers. */ - xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC); + xfs_log_force(mp, XFS_LOG_SYNC); xfs_binval(mp->m_ddev_targp); if (mp->m_rtdev_targp) { @@ -1548,15 +1654,14 @@ xfs_mod_sb(xfs_trans_t *tp, __int64_t fields) xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, fields); /* find modified range */ + f = (xfs_sb_field_t)xfs_highbit64((__uint64_t)fields); + ASSERT((1LL << f) & XFS_SB_MOD_BITS); + last = xfs_sb_info[f + 1].offset - 1; f = (xfs_sb_field_t)xfs_lowbit64((__uint64_t)fields); ASSERT((1LL << f) & XFS_SB_MOD_BITS); first = xfs_sb_info[f].offset; - f = (xfs_sb_field_t)xfs_highbit64((__uint64_t)fields); - ASSERT((1LL << f) & XFS_SB_MOD_BITS); - last = xfs_sb_info[f + 1].offset - 1; - xfs_trans_log_buf(tp, bp, first, last); } @@ -1887,7 +1992,7 @@ xfs_getsb( ASSERT(mp->m_sb_bp != NULL); bp = mp->m_sb_bp; - if (flags & XFS_BUF_TRYLOCK) { + if (flags & XBF_TRYLOCK) { if (!XFS_BUF_CPSEMA(bp)) { return NULL; } diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 1df7e45..70504fc 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -78,7 +78,8 @@ typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t); typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *, struct xfs_inode *, dm_right_t, struct xfs_inode *, dm_right_t, - const char *, const char *, mode_t, int, int); + const unsigned char *, const unsigned char *, + mode_t, int, int); typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t, char *, char *); typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *, @@ -207,8 +208,8 @@ typedef struct xfs_mount { uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ uint m_in_maxlevels; /* max inobt btree levels. */ - struct xfs_perag *m_perag; /* per-ag accounting info */ - struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */ + struct radix_tree_root m_perag_tree; /* per-ag accounting info */ + spinlock_t m_perag_lock; /* lock for m_perag_tree */ struct mutex m_growlock; /* growfs mutex */ int m_fixedfsid[2]; /* unchanged for life of FS */ uint m_dmevmask; /* DMI events for this FS */ @@ -224,6 +225,7 @@ typedef struct xfs_mount { __uint64_t m_maxioffset; /* maximum inode offset */ __uint64_t m_resblks; /* total reserved blocks */ __uint64_t m_resblks_avail;/* available reserved blocks */ + __uint64_t m_resblks_save; /* reserved blks @ remount,ro */ int m_dalign; /* stripe unit */ int m_swidth; /* stripe width */ int m_sinoalign; /* stripe unit inode alignment */ @@ -384,19 +386,10 @@ xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) } /* - * perag get/put wrappers for eventual ref counting + * perag get/put wrappers for ref counting */ -static inline xfs_perag_t * -xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino) -{ - return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)]; -} - -static inline void -xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag) -{ - /* nothing to see here, move along */ -} +struct xfs_perag *xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno); +void xfs_perag_put(struct xfs_perag *pag); /* * Per-cpu superblock locking functions @@ -428,6 +421,7 @@ typedef struct xfs_mod_sb { } xfs_mod_sb_t; extern int xfs_log_sbcount(xfs_mount_t *, uint); +extern __uint64_t xfs_default_resblks(xfs_mount_t *mp); extern int xfs_mountfs(xfs_mount_t *mp); extern void xfs_unmountfs(xfs_mount_t *); @@ -450,7 +444,8 @@ extern struct xfs_dmops xfs_dmcore_xfs; #endif /* __KERNEL__ */ extern void xfs_mod_sb(struct xfs_trans *, __int64_t); -extern xfs_agnumber_t xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t); +extern int xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t, + xfs_agnumber_t *); extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *); extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t); diff --git a/fs/xfs/xfs_mru_cache.c b/fs/xfs/xfs_mru_cache.c index 4b0613d..45ce15d 100644 --- a/fs/xfs/xfs_mru_cache.c +++ b/fs/xfs/xfs_mru_cache.c @@ -398,7 +398,7 @@ exit: * guaranteed that all the free functions for all the elements have finished * executing and the reaper is not running. */ -void +static void xfs_mru_cache_flush( xfs_mru_cache_t *mru) { diff --git a/fs/xfs/xfs_mru_cache.h b/fs/xfs/xfs_mru_cache.h index 5d439f3..36dd3ec 100644 --- a/fs/xfs/xfs_mru_cache.h +++ b/fs/xfs/xfs_mru_cache.h @@ -42,7 +42,6 @@ void xfs_mru_cache_uninit(void); int xfs_mru_cache_create(struct xfs_mru_cache **mrup, unsigned int lifetime_ms, unsigned int grp_count, xfs_mru_cache_free_func_t free_func); -void xfs_mru_cache_flush(xfs_mru_cache_t *mru); void xfs_mru_cache_destroy(struct xfs_mru_cache *mru); int xfs_mru_cache_insert(struct xfs_mru_cache *mru, unsigned long key, void *value); diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h index 91bfd60..fdcab3f 100644 --- a/fs/xfs/xfs_quota.h +++ b/fs/xfs/xfs_quota.h @@ -223,16 +223,9 @@ typedef struct xfs_qoff_logformat { #define XFS_QMOPT_RES_INOS 0x0800000 /* - * flags for dqflush and dqflush_all. - */ -#define XFS_QMOPT_SYNC 0x1000000 -#define XFS_QMOPT_ASYNC 0x2000000 -#define XFS_QMOPT_DELWRI 0x4000000 - -/* * flags for dqalloc. */ -#define XFS_QMOPT_INHERIT 0x8000000 +#define XFS_QMOPT_INHERIT 0x1000000 /* * flags to xfs_trans_mod_dquot. diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c index 5aa07ca..e336742 100644 --- a/fs/xfs/xfs_rw.c +++ b/fs/xfs/xfs_rw.c @@ -47,48 +47,6 @@ #include "xfs_trace.h" /* - * This is a subroutine for xfs_write() and other writers (xfs_ioctl) - * which clears the setuid and setgid bits when a file is written. - */ -int -xfs_write_clear_setuid( - xfs_inode_t *ip) -{ - xfs_mount_t *mp; - xfs_trans_t *tp; - int error; - - mp = ip->i_mount; - tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID); - if ((error = xfs_trans_reserve(tp, 0, - XFS_WRITEID_LOG_RES(mp), - 0, 0, 0))) { - xfs_trans_cancel(tp, 0); - return error; - } - xfs_ilock(ip, XFS_ILOCK_EXCL); - xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); - xfs_trans_ihold(tp, ip); - ip->i_d.di_mode &= ~S_ISUID; - - /* - * Note that we don't have to worry about mandatory - * file locking being disabled here because we only - * clear the S_ISGID bit if the Group execute bit is - * on, but if it was on then mandatory locking wouldn't - * have been enabled. - */ - if (ip->i_d.di_mode & S_IXGRP) { - ip->i_d.di_mode &= ~S_ISGID; - } - xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); - xfs_trans_set_sync(tp); - error = xfs_trans_commit(tp, 0); - xfs_iunlock(ip, XFS_ILOCK_EXCL); - return 0; -} - -/* * Force a shutdown of the filesystem instantly while keeping * the filesystem consistent. We don't do an unmount here; just shutdown * the shop, make sure that absolutely nothing persistent happens to @@ -153,88 +111,6 @@ xfs_do_force_shutdown( } } - -/* - * Called when we want to stop a buffer from getting written or read. - * We attach the EIO error, muck with its flags, and call biodone - * so that the proper iodone callbacks get called. - */ -int -xfs_bioerror( - xfs_buf_t *bp) -{ - -#ifdef XFSERRORDEBUG - ASSERT(XFS_BUF_ISREAD(bp) || bp->b_iodone); -#endif - - /* - * No need to wait until the buffer is unpinned. - * We aren't flushing it. - */ - XFS_BUF_ERROR(bp, EIO); - /* - * We're calling biodone, so delete B_DONE flag. Either way - * we have to call the iodone callback, and calling biodone - * probably is the best way since it takes care of - * GRIO as well. - */ - XFS_BUF_UNREAD(bp); - XFS_BUF_UNDELAYWRITE(bp); - XFS_BUF_UNDONE(bp); - XFS_BUF_STALE(bp); - - XFS_BUF_CLR_BDSTRAT_FUNC(bp); - xfs_biodone(bp); - - return (EIO); -} - -/* - * Same as xfs_bioerror, except that we are releasing the buffer - * here ourselves, and avoiding the biodone call. - * This is meant for userdata errors; metadata bufs come with - * iodone functions attached, so that we can track down errors. - */ -int -xfs_bioerror_relse( - xfs_buf_t *bp) -{ - int64_t fl; - - ASSERT(XFS_BUF_IODONE_FUNC(bp) != xfs_buf_iodone_callbacks); - ASSERT(XFS_BUF_IODONE_FUNC(bp) != xlog_iodone); - - fl = XFS_BUF_BFLAGS(bp); - /* - * No need to wait until the buffer is unpinned. - * We aren't flushing it. - * - * chunkhold expects B_DONE to be set, whether - * we actually finish the I/O or not. We don't want to - * change that interface. - */ - XFS_BUF_UNREAD(bp); - XFS_BUF_UNDELAYWRITE(bp); - XFS_BUF_DONE(bp); - XFS_BUF_STALE(bp); - XFS_BUF_CLR_IODONE_FUNC(bp); - XFS_BUF_CLR_BDSTRAT_FUNC(bp); - if (!(fl & XFS_B_ASYNC)) { - /* - * Mark b_error and B_ERROR _both_. - * Lot's of chunkcache code assumes that. - * There's no reason to mark error for - * ASYNC buffers. - */ - XFS_BUF_ERROR(bp, EIO); - XFS_BUF_FINISH_IOWAIT(bp); - } else { - xfs_buf_relse(bp); - } - return (EIO); -} - /* * Prints out an ALERT message about I/O error. */ @@ -306,37 +182,6 @@ xfs_read_buf( } /* - * Wrapper around bwrite() so that we can trap - * write errors, and act accordingly. - */ -int -xfs_bwrite( - struct xfs_mount *mp, - struct xfs_buf *bp) -{ - int error; - - /* - * XXXsup how does this work for quotas. - */ - XFS_BUF_SET_BDSTRAT_FUNC(bp, xfs_bdstrat_cb); - bp->b_mount = mp; - XFS_BUF_WRITE(bp); - - if ((error = XFS_bwrite(bp))) { - ASSERT(mp); - /* - * Cannot put a buftrace here since if the buffer is not - * B_HOLD then we will brelse() the buffer before returning - * from bwrite and we could be tracing a buffer that has - * been reused. - */ - xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR); - } - return (error); -} - -/* * helper function to extract extent size hint from inode */ xfs_extlen_t diff --git a/fs/xfs/xfs_rw.h b/fs/xfs/xfs_rw.h index 571f217..11c41ec 100644 --- a/fs/xfs/xfs_rw.h +++ b/fs/xfs/xfs_rw.h @@ -39,10 +39,6 @@ xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb) /* * Prototypes for functions in xfs_rw.c. */ -extern int xfs_write_clear_setuid(struct xfs_inode *ip); -extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp); -extern int xfs_bioerror(struct xfs_buf *bp); -extern int xfs_bioerror_relse(struct xfs_buf *bp); extern int xfs_read_buf(struct xfs_mount *mp, xfs_buftarg_t *btp, xfs_daddr_t blkno, int len, uint flags, struct xfs_buf **bpp); diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index 237badc..be942d4 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -981,9 +981,8 @@ shut_us_down: */ if (sync) { if (!error) { - error = _xfs_log_force(mp, commit_lsn, - XFS_LOG_FORCE | XFS_LOG_SYNC, - log_flushed); + error = _xfs_log_force_lsn(mp, commit_lsn, + XFS_LOG_SYNC, log_flushed); } XFS_STATS_INC(xs_trans_sync); } else { @@ -1121,7 +1120,7 @@ xfs_trans_fill_vecs( tp->t_header.th_num_items = nitems; log_vector->i_addr = (xfs_caddr_t)&tp->t_header; log_vector->i_len = sizeof(xfs_trans_header_t); - XLOG_VEC_SET_TYPE(log_vector, XLOG_REG_TYPE_TRANSHDR); + log_vector->i_type = XLOG_REG_TYPE_TRANSHDR; } diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h index ca64f33..c93e3a1 100644 --- a/fs/xfs/xfs_trans.h +++ b/fs/xfs/xfs_trans.h @@ -861,8 +861,7 @@ typedef struct xfs_item_ops { #define XFS_ITEM_SUCCESS 0 #define XFS_ITEM_PINNED 1 #define XFS_ITEM_LOCKED 2 -#define XFS_ITEM_FLUSHING 3 -#define XFS_ITEM_PUSHBUF 4 +#define XFS_ITEM_PUSHBUF 3 /* * This structure is used to maintain a list of block ranges that have been diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c index 2ffc570..e799824 100644 --- a/fs/xfs/xfs_trans_ail.c +++ b/fs/xfs/xfs_trans_ail.c @@ -237,14 +237,15 @@ out: } /* - * Function that does the work of pushing on the AIL + * xfsaild_push does the work of pushing on the AIL. Returning a timeout of + * zero indicates that the caller should sleep until woken. */ long xfsaild_push( struct xfs_ail *ailp, xfs_lsn_t *last_lsn) { - long tout = 1000; /* milliseconds */ + long tout = 0; xfs_lsn_t last_pushed_lsn = *last_lsn; xfs_lsn_t target = ailp->xa_target; xfs_lsn_t lsn; @@ -252,6 +253,7 @@ xfsaild_push( int flush_log, count, stuck; xfs_mount_t *mp = ailp->xa_mount; struct xfs_ail_cursor *cur = &ailp->xa_cursors; + int push_xfsbufd = 0; spin_lock(&ailp->xa_lock); xfs_trans_ail_cursor_init(ailp, cur); @@ -262,7 +264,7 @@ xfsaild_push( */ xfs_trans_ail_cursor_done(ailp, cur); spin_unlock(&ailp->xa_lock); - last_pushed_lsn = 0; + *last_lsn = 0; return tout; } @@ -279,7 +281,6 @@ xfsaild_push( * prevents use from spinning when we can't do anything or there is * lots of contention on the AIL lists. */ - tout = 10; lsn = lip->li_lsn; flush_log = stuck = count = 0; while ((XFS_LSN_CMP(lip->li_lsn, target) < 0)) { @@ -308,6 +309,7 @@ xfsaild_push( XFS_STATS_INC(xs_push_ail_pushbuf); IOP_PUSHBUF(lip); last_pushed_lsn = lsn; + push_xfsbufd = 1; break; case XFS_ITEM_PINNED: @@ -322,12 +324,6 @@ xfsaild_push( stuck++; break; - case XFS_ITEM_FLUSHING: - XFS_STATS_INC(xs_push_ail_flushing); - last_pushed_lsn = lsn; - stuck++; - break; - default: ASSERT(0); break; @@ -371,19 +367,24 @@ xfsaild_push( * move forward in the AIL. */ XFS_STATS_INC(xs_push_ail_flush); - xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE); + xfs_log_force(mp, 0); + } + + if (push_xfsbufd) { + /* we've got delayed write buffers to flush */ + wake_up_process(mp->m_ddev_targp->bt_task); } if (!count) { /* We're past our target or empty, so idle */ - tout = 1000; + last_pushed_lsn = 0; } else if (XFS_LSN_CMP(lsn, target) >= 0) { /* * We reached the target so wait a bit longer for I/O to * complete and remove pushed items from the AIL before we * start the next scan from the start of the AIL. */ - tout += 20; + tout = 50; last_pushed_lsn = 0; } else if ((stuck * 100) / count > 90) { /* @@ -395,11 +396,14 @@ xfsaild_push( * Backoff a bit more to allow some I/O to complete before * continuing from where we were. */ - tout += 10; + tout = 20; + } else { + /* more to do, but wait a short while before continuing */ + tout = 10; } *last_lsn = last_pushed_lsn; return tout; -} /* xfsaild_push */ +} /* diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c index 4913062..5ffd544 100644 --- a/fs/xfs/xfs_trans_buf.c +++ b/fs/xfs/xfs_trans_buf.c @@ -75,13 +75,14 @@ xfs_trans_get_buf(xfs_trans_t *tp, xfs_buf_log_item_t *bip; if (flags == 0) - flags = XFS_BUF_LOCK | XFS_BUF_MAPPED; + flags = XBF_LOCK | XBF_MAPPED; /* * Default to a normal get_buf() call if the tp is NULL. */ if (tp == NULL) - return xfs_buf_get(target_dev, blkno, len, flags | BUF_BUSY); + return xfs_buf_get(target_dev, blkno, len, + flags | XBF_DONT_BLOCK); /* * If we find the buffer in the cache with this transaction @@ -117,14 +118,14 @@ xfs_trans_get_buf(xfs_trans_t *tp, } /* - * We always specify the BUF_BUSY flag within a transaction so - * that get_buf does not try to push out a delayed write buffer + * We always specify the XBF_DONT_BLOCK flag within a transaction + * so that get_buf does not try to push out a delayed write buffer * which might cause another transaction to take place (if the * buffer was delayed alloc). Such recursive transactions can * easily deadlock with our current transaction as well as cause * us to run out of stack space. */ - bp = xfs_buf_get(target_dev, blkno, len, flags | BUF_BUSY); + bp = xfs_buf_get(target_dev, blkno, len, flags | XBF_DONT_BLOCK); if (bp == NULL) { return NULL; } @@ -290,15 +291,15 @@ xfs_trans_read_buf( int error; if (flags == 0) - flags = XFS_BUF_LOCK | XFS_BUF_MAPPED; + flags = XBF_LOCK | XBF_MAPPED; /* * Default to a normal get_buf() call if the tp is NULL. */ if (tp == NULL) { - bp = xfs_buf_read(target, blkno, len, flags | BUF_BUSY); + bp = xfs_buf_read(target, blkno, len, flags | XBF_DONT_BLOCK); if (!bp) - return (flags & XFS_BUF_TRYLOCK) ? + return (flags & XBF_TRYLOCK) ? EAGAIN : XFS_ERROR(ENOMEM); if (XFS_BUF_GETERROR(bp) != 0) { @@ -385,14 +386,14 @@ xfs_trans_read_buf( } /* - * We always specify the BUF_BUSY flag within a transaction so - * that get_buf does not try to push out a delayed write buffer + * We always specify the XBF_DONT_BLOCK flag within a transaction + * so that get_buf does not try to push out a delayed write buffer * which might cause another transaction to take place (if the * buffer was delayed alloc). Such recursive transactions can * easily deadlock with our current transaction as well as cause * us to run out of stack space. */ - bp = xfs_buf_read(target, blkno, len, flags | BUF_BUSY); + bp = xfs_buf_read(target, blkno, len, flags | XBF_DONT_BLOCK); if (bp == NULL) { *bpp = NULL; return 0; @@ -472,8 +473,8 @@ shutdown_abort: if (XFS_BUF_ISSTALE(bp) && XFS_BUF_ISDELAYWRITE(bp)) cmn_err(CE_NOTE, "about to pop assert, bp == 0x%p", bp); #endif - ASSERT((XFS_BUF_BFLAGS(bp) & (XFS_B_STALE|XFS_B_DELWRI)) != - (XFS_B_STALE|XFS_B_DELWRI)); + ASSERT((XFS_BUF_BFLAGS(bp) & (XBF_STALE|XBF_DELWRI)) != + (XBF_STALE|XBF_DELWRI)); trace_xfs_trans_read_buf_shut(bp, _RET_IP_); xfs_buf_relse(bp); diff --git a/fs/xfs/xfs_types.h b/fs/xfs/xfs_types.h index d725428..b099045 100644 --- a/fs/xfs/xfs_types.h +++ b/fs/xfs/xfs_types.h @@ -151,8 +151,8 @@ typedef enum { } xfs_btnum_t; struct xfs_name { - const char *name; - int len; + const unsigned char *name; + int len; }; #endif /* __XFS_TYPES_H__ */ diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index 6f26875..ddd2c5d 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -256,7 +256,7 @@ xfs_setattr( iattr->ia_size > ip->i_d.di_size) { code = xfs_flush_pages(ip, ip->i_d.di_size, iattr->ia_size, - XFS_B_ASYNC, FI_NONE); + XBF_ASYNC, FI_NONE); } /* wait for all I/O to complete */ @@ -597,7 +597,7 @@ xfs_fsync( { xfs_trans_t *tp; int error = 0; - int log_flushed = 0, changed = 1; + int log_flushed = 0; xfs_itrace_entry(ip); @@ -627,19 +627,16 @@ xfs_fsync( * disk yet, the inode will be still be pinned. If it is, * force the log. */ - xfs_iunlock(ip, XFS_ILOCK_SHARED); - if (xfs_ipincount(ip)) { - error = _xfs_log_force(ip->i_mount, (xfs_lsn_t)0, - XFS_LOG_FORCE | XFS_LOG_SYNC, - &log_flushed); - } else { - /* - * If the inode is not pinned and nothing has changed - * we don't need to flush the cache. - */ - changed = 0; + if (ip->i_itemp->ili_last_lsn) { + error = _xfs_log_force_lsn(ip->i_mount, + ip->i_itemp->ili_last_lsn, + XFS_LOG_SYNC, &log_flushed); + } else { + error = _xfs_log_force(ip->i_mount, + XFS_LOG_SYNC, &log_flushed); + } } } else { /* @@ -674,7 +671,7 @@ xfs_fsync( xfs_iunlock(ip, XFS_ILOCK_EXCL); } - if ((ip->i_mount->m_flags & XFS_MOUNT_BARRIER) && changed) { + if (ip->i_mount->m_flags & XFS_MOUNT_BARRIER) { /* * If the log write didn't issue an ordered tag we need * to flush the disk cache for the data device now. @@ -1096,7 +1093,7 @@ xfs_release( */ truncated = xfs_iflags_test_and_clear(ip, XFS_ITRUNCATED); if (truncated && VN_DIRTY(VFS_I(ip)) && ip->i_delayed_blks > 0) - xfs_flush_pages(ip, 0, -1, XFS_B_ASYNC, FI_NONE); + xfs_flush_pages(ip, 0, -1, XBF_ASYNC, FI_NONE); } if (ip->i_d.di_nlink != 0) { @@ -2199,7 +2196,8 @@ xfs_symlink( if (DM_EVENT_ENABLED(dp, DM_EVENT_SYMLINK)) { error = XFS_SEND_NAMESP(mp, DM_EVENT_SYMLINK, dp, DM_RIGHT_NULL, NULL, DM_RIGHT_NULL, - link_name->name, target_path, 0, 0, 0); + link_name->name, + (unsigned char *)target_path, 0, 0, 0); if (error) return error; } @@ -2395,7 +2393,8 @@ std_return: dp, DM_RIGHT_NULL, error ? NULL : ip, DM_RIGHT_NULL, link_name->name, - target_path, 0, error, 0); + (unsigned char *)target_path, + 0, error, 0); } if (!error) diff --git a/fs/xfs/xfs_vnodeops.h b/fs/xfs/xfs_vnodeops.h index 167a467..774f407 100644 --- a/fs/xfs/xfs_vnodeops.h +++ b/fs/xfs/xfs_vnodeops.h @@ -43,11 +43,11 @@ int xfs_change_file_space(struct xfs_inode *ip, int cmd, int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name, struct xfs_inode *src_ip, struct xfs_inode *target_dp, struct xfs_name *target_name, struct xfs_inode *target_ip); -int xfs_attr_get(struct xfs_inode *ip, const char *name, char *value, - int *valuelenp, int flags); -int xfs_attr_set(struct xfs_inode *dp, const char *name, char *value, - int valuelen, int flags); -int xfs_attr_remove(struct xfs_inode *dp, const char *name, int flags); +int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name, + unsigned char *value, int *valuelenp, int flags); +int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name, + unsigned char *value, int valuelen, int flags); +int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags); int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize, int flags, struct attrlist_cursor_kern *cursor); ssize_t xfs_read(struct xfs_inode *ip, struct kiocb *iocb, |
