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authorDave Chinner <david@fromorbit.com>2015-02-02 10:03:18 +1100
committerDave Chinner <david@fromorbit.com>2015-02-02 10:03:18 +1100
commit3fd1b0d158b6b98d9561e2f7f9c6970d95cf71d6 (patch)
tree3a32490a8db83ca2ed6da6701af20e3cd6adff2c /fs/xfs
parent438c3c8d2bb910966db6fc4140e62d67b3c5f2a8 (diff)
parent2ba66237029d1ad6c1a5e2241b0ffbbfff55f750 (diff)
downloadop-kernel-dev-3fd1b0d158b6b98d9561e2f7f9c6970d95cf71d6.zip
op-kernel-dev-3fd1b0d158b6b98d9561e2f7f9c6970d95cf71d6.tar.gz
Merge branch 'xfs-misc-fixes-for-3.20-3' into for-next
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/kmem.c10
-rw-r--r--fs/xfs/kmem.h5
-rw-r--r--fs/xfs/xfs_aops.c149
-rw-r--r--fs/xfs/xfs_aops.h3
-rw-r--r--fs/xfs/xfs_file.c64
-rw-r--r--fs/xfs/xfs_inode.h9
-rw-r--r--fs/xfs/xfs_ioctl.c50
-rw-r--r--fs/xfs/xfs_ioctl32.c2
8 files changed, 129 insertions, 163 deletions
diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c
index 53e95b2..a7a3a63 100644
--- a/fs/xfs/kmem.c
+++ b/fs/xfs/kmem.c
@@ -91,16 +91,6 @@ kmem_zalloc_large(size_t size, xfs_km_flags_t flags)
return ptr;
}
-void
-kmem_free(const void *ptr)
-{
- if (!is_vmalloc_addr(ptr)) {
- kfree(ptr);
- } else {
- vfree(ptr);
- }
-}
-
void *
kmem_realloc(const void *ptr, size_t newsize, size_t oldsize,
xfs_km_flags_t flags)
diff --git a/fs/xfs/kmem.h b/fs/xfs/kmem.h
index 64db0e5..cc6b768 100644
--- a/fs/xfs/kmem.h
+++ b/fs/xfs/kmem.h
@@ -63,7 +63,10 @@ kmem_flags_convert(xfs_km_flags_t flags)
extern void *kmem_alloc(size_t, xfs_km_flags_t);
extern void *kmem_zalloc_large(size_t size, xfs_km_flags_t);
extern void *kmem_realloc(const void *, size_t, size_t, xfs_km_flags_t);
-extern void kmem_free(const void *);
+static inline void kmem_free(const void *ptr)
+{
+ kvfree(ptr);
+}
extern void *kmem_zalloc_greedy(size_t *, size_t, size_t);
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 18e2f3b..3a9b7a1 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -135,30 +135,22 @@ xfs_setfilesize_trans_alloc(
*/
STATIC int
xfs_setfilesize(
- struct xfs_ioend *ioend)
+ struct xfs_inode *ip,
+ struct xfs_trans *tp,
+ xfs_off_t offset,
+ size_t size)
{
- struct xfs_inode *ip = XFS_I(ioend->io_inode);
- struct xfs_trans *tp = ioend->io_append_trans;
xfs_fsize_t isize;
- /*
- * The transaction may have been allocated in the I/O submission thread,
- * thus we need to mark ourselves as beeing in a transaction manually.
- * Similarly for freeze protection.
- */
- current_set_flags_nested(&tp->t_pflags, PF_FSTRANS);
- rwsem_acquire_read(&VFS_I(ip)->i_sb->s_writers.lock_map[SB_FREEZE_FS-1],
- 0, 1, _THIS_IP_);
-
xfs_ilock(ip, XFS_ILOCK_EXCL);
- isize = xfs_new_eof(ip, ioend->io_offset + ioend->io_size);
+ isize = xfs_new_eof(ip, offset + size);
if (!isize) {
xfs_iunlock(ip, XFS_ILOCK_EXCL);
xfs_trans_cancel(tp, 0);
return 0;
}
- trace_xfs_setfilesize(ip, ioend->io_offset, ioend->io_size);
+ trace_xfs_setfilesize(ip, offset, size);
ip->i_d.di_size = isize;
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
@@ -167,6 +159,25 @@ xfs_setfilesize(
return xfs_trans_commit(tp, 0);
}
+STATIC int
+xfs_setfilesize_ioend(
+ struct xfs_ioend *ioend)
+{
+ struct xfs_inode *ip = XFS_I(ioend->io_inode);
+ struct xfs_trans *tp = ioend->io_append_trans;
+
+ /*
+ * The transaction may have been allocated in the I/O submission thread,
+ * thus we need to mark ourselves as being in a transaction manually.
+ * Similarly for freeze protection.
+ */
+ current_set_flags_nested(&tp->t_pflags, PF_FSTRANS);
+ rwsem_acquire_read(&VFS_I(ip)->i_sb->s_writers.lock_map[SB_FREEZE_FS-1],
+ 0, 1, _THIS_IP_);
+
+ return xfs_setfilesize(ip, tp, ioend->io_offset, ioend->io_size);
+}
+
/*
* Schedule IO completion handling on the final put of an ioend.
*
@@ -182,8 +193,7 @@ xfs_finish_ioend(
if (ioend->io_type == XFS_IO_UNWRITTEN)
queue_work(mp->m_unwritten_workqueue, &ioend->io_work);
- else if (ioend->io_append_trans ||
- (ioend->io_isdirect && xfs_ioend_is_append(ioend)))
+ else if (ioend->io_append_trans)
queue_work(mp->m_data_workqueue, &ioend->io_work);
else
xfs_destroy_ioend(ioend);
@@ -215,22 +225,8 @@ xfs_end_io(
if (ioend->io_type == XFS_IO_UNWRITTEN) {
error = xfs_iomap_write_unwritten(ip, ioend->io_offset,
ioend->io_size);
- } else if (ioend->io_isdirect && xfs_ioend_is_append(ioend)) {
- /*
- * For direct I/O we do not know if we need to allocate blocks
- * or not so we can't preallocate an append transaction as that
- * results in nested reservations and log space deadlocks. Hence
- * allocate the transaction here. While this is sub-optimal and
- * can block IO completion for some time, we're stuck with doing
- * it this way until we can pass the ioend to the direct IO
- * allocation callbacks and avoid nesting that way.
- */
- error = xfs_setfilesize_trans_alloc(ioend);
- if (error)
- goto done;
- error = xfs_setfilesize(ioend);
} else if (ioend->io_append_trans) {
- error = xfs_setfilesize(ioend);
+ error = xfs_setfilesize_ioend(ioend);
} else {
ASSERT(!xfs_ioend_is_append(ioend));
}
@@ -242,17 +238,6 @@ done:
}
/*
- * Call IO completion handling in caller context on the final put of an ioend.
- */
-STATIC void
-xfs_finish_ioend_sync(
- struct xfs_ioend *ioend)
-{
- if (atomic_dec_and_test(&ioend->io_remaining))
- xfs_end_io(&ioend->io_work);
-}
-
-/*
* Allocate and initialise an IO completion structure.
* We need to track unwritten extent write completion here initially.
* We'll need to extend this for updating the ondisk inode size later
@@ -273,7 +258,6 @@ xfs_alloc_ioend(
* all the I/O from calling the completion routine too early.
*/
atomic_set(&ioend->io_remaining, 1);
- ioend->io_isdirect = 0;
ioend->io_error = 0;
ioend->io_list = NULL;
ioend->io_type = type;
@@ -1459,11 +1443,7 @@ xfs_get_blocks_direct(
*
* If the private argument is non-NULL __xfs_get_blocks signals us that we
* need to issue a transaction to convert the range from unwritten to written
- * extents. In case this is regular synchronous I/O we just call xfs_end_io
- * to do this and we are done. But in case this was a successful AIO
- * request this handler is called from interrupt context, from which we
- * can't start transactions. In that case offload the I/O completion to
- * the workqueues we also use for buffered I/O completion.
+ * extents.
*/
STATIC void
xfs_end_io_direct_write(
@@ -1472,7 +1452,12 @@ xfs_end_io_direct_write(
ssize_t size,
void *private)
{
- struct xfs_ioend *ioend = iocb->private;
+ struct inode *inode = file_inode(iocb->ki_filp);
+ struct xfs_inode *ip = XFS_I(inode);
+ struct xfs_mount *mp = ip->i_mount;
+
+ if (XFS_FORCED_SHUTDOWN(mp))
+ return;
/*
* While the generic direct I/O code updates the inode size, it does
@@ -1480,22 +1465,33 @@ xfs_end_io_direct_write(
* end_io handler thinks the on-disk size is outside the in-core
* size. To prevent this just update it a little bit earlier here.
*/
- if (offset + size > i_size_read(ioend->io_inode))
- i_size_write(ioend->io_inode, offset + size);
+ if (offset + size > i_size_read(inode))
+ i_size_write(inode, offset + size);
/*
- * blockdev_direct_IO can return an error even after the I/O
- * completion handler was called. Thus we need to protect
- * against double-freeing.
+ * For direct I/O we do not know if we need to allocate blocks or not,
+ * so we can't preallocate an append transaction, as that results in
+ * nested reservations and log space deadlocks. Hence allocate the
+ * transaction here. While this is sub-optimal and can block IO
+ * completion for some time, we're stuck with doing it this way until
+ * we can pass the ioend to the direct IO allocation callbacks and
+ * avoid nesting that way.
*/
- iocb->private = NULL;
-
- ioend->io_offset = offset;
- ioend->io_size = size;
- if (private && size > 0)
- ioend->io_type = XFS_IO_UNWRITTEN;
+ if (private && size > 0) {
+ xfs_iomap_write_unwritten(ip, offset, size);
+ } else if (offset + size > ip->i_d.di_size) {
+ struct xfs_trans *tp;
+ int error;
+
+ tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS);
+ error = xfs_trans_reserve(tp, &M_RES(mp)->tr_fsyncts, 0, 0);
+ if (error) {
+ xfs_trans_cancel(tp, 0);
+ return;
+ }
- xfs_finish_ioend_sync(ioend);
+ xfs_setfilesize(ip, tp, offset, size);
+ }
}
STATIC ssize_t
@@ -1507,39 +1503,16 @@ xfs_vm_direct_IO(
{
struct inode *inode = iocb->ki_filp->f_mapping->host;
struct block_device *bdev = xfs_find_bdev_for_inode(inode);
- struct xfs_ioend *ioend = NULL;
- ssize_t ret;
if (rw & WRITE) {
- size_t size = iov_iter_count(iter);
-
- /*
- * We cannot preallocate a size update transaction here as we
- * don't know whether allocation is necessary or not. Hence we
- * can only tell IO completion that one is necessary if we are
- * not doing unwritten extent conversion.
- */
- iocb->private = ioend = xfs_alloc_ioend(inode, XFS_IO_DIRECT);
- if (offset + size > XFS_I(inode)->i_d.di_size)
- ioend->io_isdirect = 1;
-
- ret = __blockdev_direct_IO(rw, iocb, inode, bdev, iter,
+ return __blockdev_direct_IO(rw, iocb, inode, bdev, iter,
offset, xfs_get_blocks_direct,
xfs_end_io_direct_write, NULL,
DIO_ASYNC_EXTEND);
- if (ret != -EIOCBQUEUED && iocb->private)
- goto out_destroy_ioend;
- } else {
- ret = __blockdev_direct_IO(rw, iocb, inode, bdev, iter,
- offset, xfs_get_blocks_direct,
- NULL, NULL, 0);
}
-
- return ret;
-
-out_destroy_ioend:
- xfs_destroy_ioend(ioend);
- return ret;
+ return __blockdev_direct_IO(rw, iocb, inode, bdev, iter,
+ offset, xfs_get_blocks_direct,
+ NULL, NULL, 0);
}
/*
diff --git a/fs/xfs/xfs_aops.h b/fs/xfs/xfs_aops.h
index f94dd45..ac644e0 100644
--- a/fs/xfs/xfs_aops.h
+++ b/fs/xfs/xfs_aops.h
@@ -24,14 +24,12 @@ extern mempool_t *xfs_ioend_pool;
* Types of I/O for bmap clustering and I/O completion tracking.
*/
enum {
- XFS_IO_DIRECT = 0, /* special case for direct I/O ioends */
XFS_IO_DELALLOC, /* covers delalloc region */
XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */
XFS_IO_OVERWRITE, /* covers already allocated extent */
};
#define XFS_IO_TYPES \
- { 0, "" }, \
{ XFS_IO_DELALLOC, "delalloc" }, \
{ XFS_IO_UNWRITTEN, "unwritten" }, \
{ XFS_IO_OVERWRITE, "overwrite" }
@@ -45,7 +43,6 @@ typedef struct xfs_ioend {
unsigned int io_type; /* delalloc / unwritten */
int io_error; /* I/O error code */
atomic_t io_remaining; /* hold count */
- unsigned int io_isdirect : 1;/* direct I/O */
struct inode *io_inode; /* file being written to */
struct buffer_head *io_buffer_head;/* buffer linked list head */
struct buffer_head *io_buffer_tail;/* buffer linked list tail */
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 13e974e..712d312 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -127,6 +127,42 @@ xfs_iozero(
return (-status);
}
+int
+xfs_update_prealloc_flags(
+ struct xfs_inode *ip,
+ enum xfs_prealloc_flags flags)
+{
+ struct xfs_trans *tp;
+ int error;
+
+ tp = xfs_trans_alloc(ip->i_mount, XFS_TRANS_WRITEID);
+ error = xfs_trans_reserve(tp, &M_RES(ip->i_mount)->tr_writeid, 0, 0);
+ if (error) {
+ xfs_trans_cancel(tp, 0);
+ return error;
+ }
+
+ xfs_ilock(ip, XFS_ILOCK_EXCL);
+ xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+
+ if (!(flags & XFS_PREALLOC_INVISIBLE)) {
+ ip->i_d.di_mode &= ~S_ISUID;
+ if (ip->i_d.di_mode & S_IXGRP)
+ ip->i_d.di_mode &= ~S_ISGID;
+ xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
+ }
+
+ if (flags & XFS_PREALLOC_SET)
+ ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC;
+ if (flags & XFS_PREALLOC_CLEAR)
+ ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC;
+
+ xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+ if (flags & XFS_PREALLOC_SYNC)
+ xfs_trans_set_sync(tp);
+ return xfs_trans_commit(tp, 0);
+}
+
/*
* Fsync operations on directories are much simpler than on regular files,
* as there is no file data to flush, and thus also no need for explicit
@@ -784,8 +820,8 @@ xfs_file_fallocate(
{
struct inode *inode = file_inode(file);
struct xfs_inode *ip = XFS_I(inode);
- struct xfs_trans *tp;
long error;
+ enum xfs_prealloc_flags flags = 0;
loff_t new_size = 0;
if (!S_ISREG(inode->i_mode))
@@ -822,6 +858,8 @@ xfs_file_fallocate(
if (error)
goto out_unlock;
} else {
+ flags |= XFS_PREALLOC_SET;
+
if (!(mode & FALLOC_FL_KEEP_SIZE) &&
offset + len > i_size_read(inode)) {
new_size = offset + len;
@@ -839,28 +877,10 @@ xfs_file_fallocate(
goto out_unlock;
}
- tp = xfs_trans_alloc(ip->i_mount, XFS_TRANS_WRITEID);
- error = xfs_trans_reserve(tp, &M_RES(ip->i_mount)->tr_writeid, 0, 0);
- if (error) {
- xfs_trans_cancel(tp, 0);
- goto out_unlock;
- }
-
- xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
- ip->i_d.di_mode &= ~S_ISUID;
- if (ip->i_d.di_mode & S_IXGRP)
- ip->i_d.di_mode &= ~S_ISGID;
-
- if (!(mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE)))
- ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC;
-
- xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
- xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
-
if (file->f_flags & O_DSYNC)
- xfs_trans_set_sync(tp);
- error = xfs_trans_commit(tp, 0);
+ flags |= XFS_PREALLOC_SYNC;
+
+ error = xfs_update_prealloc_flags(ip, flags);
if (error)
goto out_unlock;
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index f772296..86cd6b3 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -377,6 +377,15 @@ int xfs_droplink(struct xfs_trans *, struct xfs_inode *);
int xfs_bumplink(struct xfs_trans *, struct xfs_inode *);
/* from xfs_file.c */
+enum xfs_prealloc_flags {
+ XFS_PREALLOC_SET = (1 << 1),
+ XFS_PREALLOC_CLEAR = (1 << 2),
+ XFS_PREALLOC_SYNC = (1 << 3),
+ XFS_PREALLOC_INVISIBLE = (1 << 4),
+};
+
+int xfs_update_prealloc_flags(struct xfs_inode *,
+ enum xfs_prealloc_flags);
int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t);
int xfs_iozero(struct xfs_inode *, loff_t, size_t);
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index a1831980..d58bcd2 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -606,11 +606,8 @@ xfs_ioc_space(
unsigned int cmd,
xfs_flock64_t *bf)
{
- struct xfs_mount *mp = ip->i_mount;
- struct xfs_trans *tp;
struct iattr iattr;
- bool setprealloc = false;
- bool clrprealloc = false;
+ enum xfs_prealloc_flags flags = 0;
int error;
/*
@@ -630,6 +627,11 @@ xfs_ioc_space(
if (!S_ISREG(inode->i_mode))
return -EINVAL;
+ if (filp->f_flags & O_DSYNC)
+ flags |= XFS_PREALLOC_SYNC;
+ if (ioflags & XFS_IO_INVIS)
+ flags |= XFS_PREALLOC_INVISIBLE;
+
error = mnt_want_write_file(filp);
if (error)
return error;
@@ -673,25 +675,23 @@ xfs_ioc_space(
}
if (bf->l_start < 0 ||
- bf->l_start > mp->m_super->s_maxbytes ||
+ bf->l_start > inode->i_sb->s_maxbytes ||
bf->l_start + bf->l_len < 0 ||
- bf->l_start + bf->l_len >= mp->m_super->s_maxbytes) {
+ bf->l_start + bf->l_len >= inode->i_sb->s_maxbytes) {
error = -EINVAL;
goto out_unlock;
}
switch (cmd) {
case XFS_IOC_ZERO_RANGE:
+ flags |= XFS_PREALLOC_SET;
error = xfs_zero_file_space(ip, bf->l_start, bf->l_len);
- if (!error)
- setprealloc = true;
break;
case XFS_IOC_RESVSP:
case XFS_IOC_RESVSP64:
+ flags |= XFS_PREALLOC_SET;
error = xfs_alloc_file_space(ip, bf->l_start, bf->l_len,
XFS_BMAPI_PREALLOC);
- if (!error)
- setprealloc = true;
break;
case XFS_IOC_UNRESVSP:
case XFS_IOC_UNRESVSP64:
@@ -701,6 +701,7 @@ xfs_ioc_space(
case XFS_IOC_ALLOCSP64:
case XFS_IOC_FREESP:
case XFS_IOC_FREESP64:
+ flags |= XFS_PREALLOC_CLEAR;
if (bf->l_start > XFS_ISIZE(ip)) {
error = xfs_alloc_file_space(ip, XFS_ISIZE(ip),
bf->l_start - XFS_ISIZE(ip), 0);
@@ -712,8 +713,6 @@ xfs_ioc_space(
iattr.ia_size = bf->l_start;
error = xfs_setattr_size(ip, &iattr);
- if (!error)
- clrprealloc = true;
break;
default:
ASSERT(0);
@@ -723,32 +722,7 @@ xfs_ioc_space(
if (error)
goto out_unlock;
- tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID);
- error = xfs_trans_reserve(tp, &M_RES(mp)->tr_writeid, 0, 0);
- if (error) {
- xfs_trans_cancel(tp, 0);
- goto out_unlock;
- }
-
- xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
-
- if (!(ioflags & XFS_IO_INVIS)) {
- ip->i_d.di_mode &= ~S_ISUID;
- if (ip->i_d.di_mode & S_IXGRP)
- ip->i_d.di_mode &= ~S_ISGID;
- xfs_trans_ichgtime(tp, ip, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
- }
-
- if (setprealloc)
- ip->i_d.di_flags |= XFS_DIFLAG_PREALLOC;
- else if (clrprealloc)
- ip->i_d.di_flags &= ~XFS_DIFLAG_PREALLOC;
-
- xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
- if (filp->f_flags & O_DSYNC)
- xfs_trans_set_sync(tp);
- error = xfs_trans_commit(tp, 0);
+ error = xfs_update_prealloc_flags(ip, flags);
out_unlock:
xfs_iunlock(ip, XFS_IOLOCK_EXCL);
diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c
index ec67728..bfc7c7c 100644
--- a/fs/xfs/xfs_ioctl32.c
+++ b/fs/xfs/xfs_ioctl32.c
@@ -423,7 +423,7 @@ xfs_compat_attrmulti_by_handle(
ops = memdup_user(compat_ptr(am_hreq.ops), size);
if (IS_ERR(ops)) {
- error = -PTR_ERR(ops);
+ error = PTR_ERR(ops);
goto out_dput;
}
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