diff options
| -rw-r--r-- | arch/powerpc/sysdev/axonram.c | 1 | ||||
| -rw-r--r-- | block/genhd.c | 1 | ||||
| -rw-r--r-- | block/ioctl.c | 2 | ||||
| -rw-r--r-- | drivers/block/amiflop.c | 2 | ||||
| -rw-r--r-- | drivers/block/brd.c | 9 | ||||
| -rw-r--r-- | drivers/block/floppy.c | 1 | ||||
| -rw-r--r-- | drivers/block/loop.c | 1 | ||||
| -rw-r--r-- | drivers/cdrom/cdrom.c | 1 | ||||
| -rw-r--r-- | drivers/md/dm.c | 1 | ||||
| -rw-r--r-- | drivers/md/md.c | 3 | ||||
| -rw-r--r-- | drivers/mtd/devices/block2mtd.c | 1 | ||||
| -rw-r--r-- | drivers/s390/block/dasd.c | 1 | ||||
| -rw-r--r-- | drivers/scsi/scsicam.c | 1 | ||||
| -rw-r--r-- | drivers/tty/sysrq.c | 2 | ||||
| -rw-r--r-- | fs/block_dev.c | 30 | ||||
| -rw-r--r-- | fs/buffer.c | 50 | ||||
| -rw-r--r-- | fs/cachefiles/interface.c | 1 | ||||
| -rw-r--r-- | fs/cramfs/inode.c | 1 | ||||
| -rw-r--r-- | fs/fs-writeback.c | 1 | ||||
| -rw-r--r-- | fs/libfs.c | 2 | ||||
| -rw-r--r-- | fs/quota/dquot.c | 1 | ||||
| -rw-r--r-- | fs/quota/quota.c | 1 | ||||
| -rw-r--r-- | fs/splice.c | 1 | ||||
| -rw-r--r-- | fs/sync.c | 1 | ||||
| -rw-r--r-- | include/linux/fs.h | 3 | ||||
| -rw-r--r-- | kernel/power/swap.c | 1 | ||||
| -rw-r--r-- | mm/page-writeback.c | 2 | ||||
| -rw-r--r-- | mm/swap_state.c | 1 |
28 files changed, 40 insertions, 83 deletions
diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c index ba42719..1c16141 100644 --- a/arch/powerpc/sysdev/axonram.c +++ b/arch/powerpc/sysdev/axonram.c @@ -25,7 +25,6 @@ #include <linux/bio.h> #include <linux/blkdev.h> -#include <linux/buffer_head.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/fs.h> diff --git a/block/genhd.c b/block/genhd.c index bf443a7..b7d1a0e 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -15,7 +15,6 @@ #include <linux/slab.h> #include <linux/kmod.h> #include <linux/kobj_map.h> -#include <linux/buffer_head.h> #include <linux/mutex.h> #include <linux/idr.h> #include <linux/log2.h> diff --git a/block/ioctl.c b/block/ioctl.c index ca939fc..91e7b19c 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -5,7 +5,7 @@ #include <linux/blkpg.h> #include <linux/hdreg.h> #include <linux/backing-dev.h> -#include <linux/buffer_head.h> +#include <linux/fs.h> #include <linux/blktrace_api.h> #include <asm/uaccess.h> diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c index 8eba86b..386146d 100644 --- a/drivers/block/amiflop.c +++ b/drivers/block/amiflop.c @@ -63,7 +63,7 @@ #include <linux/mutex.h> #include <linux/amifdreg.h> #include <linux/amifd.h> -#include <linux/buffer_head.h> +#include <linux/fs.h> #include <linux/blkdev.h> #include <linux/elevator.h> #include <linux/interrupt.h> diff --git a/drivers/block/brd.c b/drivers/block/brd.c index d22119d..ec24643 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -17,7 +17,7 @@ #include <linux/highmem.h> #include <linux/mutex.h> #include <linux/radix-tree.h> -#include <linux/buffer_head.h> /* invalidate_bh_lrus() */ +#include <linux/fs.h> #include <linux/slab.h> #include <asm/uaccess.h> @@ -402,14 +402,13 @@ static int brd_ioctl(struct block_device *bdev, fmode_t mode, error = -EBUSY; if (bdev->bd_openers <= 1) { /* - * Invalidate the cache first, so it isn't written - * back to the device. + * Kill the cache first, so it isn't written back to the + * device. * * Another thread might instantiate more buffercache here, * but there is not much we can do to close that race. */ - invalidate_bh_lrus(); - truncate_inode_pages(bdev->bd_inode->i_mapping, 0); + kill_bdev(bdev); brd_free_pages(brd); error = 0; } diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 9955a53..510fb10 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -188,7 +188,6 @@ static int print_unex = 1; #include <linux/init.h> #include <linux/platform_device.h> #include <linux/mod_devicetable.h> -#include <linux/buffer_head.h> /* for invalidate_buffers() */ #include <linux/mutex.h> #include <linux/io.h> #include <linux/uaccess.h> diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 1e888c9..f002577 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -69,7 +69,6 @@ #include <linux/freezer.h> #include <linux/mutex.h> #include <linux/writeback.h> -#include <linux/buffer_head.h> /* for invalidate_bdev() */ #include <linux/completion.h> #include <linux/highmem.h> #include <linux/kthread.h> diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c index f997c27..2118211 100644 --- a/drivers/cdrom/cdrom.c +++ b/drivers/cdrom/cdrom.c @@ -267,7 +267,6 @@ #include <linux/module.h> #include <linux/fs.h> -#include <linux/buffer_head.h> #include <linux/major.h> #include <linux/types.h> #include <linux/errno.h> diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 4720f68..b89c548 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -14,7 +14,6 @@ #include <linux/moduleparam.h> #include <linux/blkpg.h> #include <linux/bio.h> -#include <linux/buffer_head.h> #include <linux/mempool.h> #include <linux/slab.h> #include <linux/idr.h> diff --git a/drivers/md/md.c b/drivers/md/md.c index f47f1f8..5d1b676 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -36,8 +36,7 @@ #include <linux/blkdev.h> #include <linux/sysctl.h> #include <linux/seq_file.h> -#include <linux/mutex.h> -#include <linux/buffer_head.h> /* for invalidate_bdev */ +#include <linux/fs.h> #include <linux/poll.h> #include <linux/ctype.h> #include <linux/string.h> diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c index b78f231..ebeabc7 100644 --- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -14,7 +14,6 @@ #include <linux/list.h> #include <linux/init.h> #include <linux/mtd/mtd.h> -#include <linux/buffer_head.h> #include <linux/mutex.h> #include <linux/mount.h> #include <linux/slab.h> diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index 65894f0..2de5b60 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -17,7 +17,6 @@ #include <linux/ctype.h> #include <linux/major.h> #include <linux/slab.h> -#include <linux/buffer_head.h> #include <linux/hdreg.h> #include <linux/async.h> #include <linux/mutex.h> diff --git a/drivers/scsi/scsicam.c b/drivers/scsi/scsicam.c index 6803b1e..92d24d6 100644 --- a/drivers/scsi/scsicam.c +++ b/drivers/scsi/scsicam.c @@ -16,7 +16,6 @@ #include <linux/genhd.h> #include <linux/kernel.h> #include <linux/blkdev.h> -#include <linux/buffer_head.h> #include <asm/unaligned.h> #include <scsi/scsicam.h> diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c index 43db715..7867b7c 100644 --- a/drivers/tty/sysrq.c +++ b/drivers/tty/sysrq.c @@ -32,7 +32,6 @@ #include <linux/module.h> #include <linux/suspend.h> #include <linux/writeback.h> -#include <linux/buffer_head.h> /* for fsync_bdev() */ #include <linux/swap.h> #include <linux/spinlock.h> #include <linux/vt_kern.h> @@ -41,6 +40,7 @@ #include <linux/oom.h> #include <linux/slab.h> #include <linux/input.h> +#include <linux/uaccess.h> #include <asm/ptrace.h> #include <asm/irq_regs.h> diff --git a/fs/block_dev.c b/fs/block_dev.c index 7866cdd..69a5b6f 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -17,6 +17,7 @@ #include <linux/module.h> #include <linux/blkpg.h> #include <linux/buffer_head.h> +#include <linux/swap.h> #include <linux/pagevec.h> #include <linux/writeback.h> #include <linux/mpage.h> @@ -25,6 +26,7 @@ #include <linux/namei.h> #include <linux/log2.h> #include <linux/kmemleak.h> +#include <linux/cleancache.h> #include <asm/uaccess.h> #include "internal.h" @@ -82,13 +84,35 @@ static sector_t max_block(struct block_device *bdev) } /* Kill _all_ buffers and pagecache , dirty or not.. */ -static void kill_bdev(struct block_device *bdev) +void kill_bdev(struct block_device *bdev) { - if (bdev->bd_inode->i_mapping->nrpages == 0) + struct address_space *mapping = bdev->bd_inode->i_mapping; + + if (mapping->nrpages == 0) return; + invalidate_bh_lrus(); - truncate_inode_pages(bdev->bd_inode->i_mapping, 0); + truncate_inode_pages(mapping, 0); } +EXPORT_SYMBOL(kill_bdev); + +/* Invalidate clean unused buffers and pagecache. */ +void invalidate_bdev(struct block_device *bdev) +{ + struct address_space *mapping = bdev->bd_inode->i_mapping; + + if (mapping->nrpages == 0) + return; + + invalidate_bh_lrus(); + lru_add_drain_all(); /* make sure all lru add caches are flushed */ + invalidate_mapping_pages(mapping, 0, -1); + /* 99% of the time, we don't need to flush the cleancache on the bdev. + * But, for the strange corners, lets be cautious + */ + cleancache_flush_inode(mapping); +} +EXPORT_SYMBOL(invalidate_bdev); int set_blocksize(struct block_device *bdev, int size) { diff --git a/fs/buffer.c b/fs/buffer.c index 19d8eb7..1a30db7 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -41,7 +41,6 @@ #include <linux/bitops.h> #include <linux/mpage.h> #include <linux/bit_spinlock.h> -#include <linux/cleancache.h> static int fsync_buffers_list(spinlock_t *lock, struct list_head *list); @@ -231,55 +230,6 @@ out: return ret; } -/* If invalidate_buffers() will trash dirty buffers, it means some kind - of fs corruption is going on. Trashing dirty data always imply losing - information that was supposed to be just stored on the physical layer - by the user. - - Thus invalidate_buffers in general usage is not allwowed to trash - dirty buffers. For example ioctl(FLSBLKBUF) expects dirty data to - be preserved. These buffers are simply skipped. - - We also skip buffers which are still in use. For example this can - happen if a userspace program is reading the block device. - - NOTE: In the case where the user removed a removable-media-disk even if - there's still dirty data not synced on disk (due a bug in the device driver - or due an error of the user), by not destroying the dirty buffers we could - generate corruption also on the next media inserted, thus a parameter is - necessary to handle this case in the most safe way possible (trying - to not corrupt also the new disk inserted with the data belonging to - the old now corrupted disk). Also for the ramdisk the natural thing - to do in order to release the ramdisk memory is to destroy dirty buffers. - - These are two special cases. Normal usage imply the device driver - to issue a sync on the device (without waiting I/O completion) and - then an invalidate_buffers call that doesn't trash dirty buffers. - - For handling cache coherency with the blkdev pagecache the 'update' case - is been introduced. It is needed to re-read from disk any pinned - buffer. NOTE: re-reading from disk is destructive so we can do it only - when we assume nobody is changing the buffercache under our I/O and when - we think the disk contains more recent information than the buffercache. - The update == 1 pass marks the buffers we need to update, the update == 2 - pass does the actual I/O. */ -void invalidate_bdev(struct block_device *bdev) -{ - struct address_space *mapping = bdev->bd_inode->i_mapping; - - if (mapping->nrpages == 0) - return; - - invalidate_bh_lrus(); - lru_add_drain_all(); /* make sure all lru add caches are flushed */ - invalidate_mapping_pages(mapping, 0, -1); - /* 99% of the time, we don't need to flush the cleancache on the bdev. - * But, for the strange corners, lets be cautious - */ - cleancache_flush_inode(mapping); -} -EXPORT_SYMBOL(invalidate_bdev); - /* * Kick the writeback threads then try to free up some ZONE_NORMAL memory. */ diff --git a/fs/cachefiles/interface.c b/fs/cachefiles/interface.c index 1064805..67bef6d 100644 --- a/fs/cachefiles/interface.c +++ b/fs/cachefiles/interface.c @@ -11,7 +11,6 @@ #include <linux/slab.h> #include <linux/mount.h> -#include <linux/buffer_head.h> #include "internal.h" #define list_to_page(head) (list_entry((head)->prev, struct page, lru)) diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c index 739fb59..c37adb2 100644 --- a/fs/cramfs/inode.c +++ b/fs/cramfs/inode.c @@ -20,7 +20,6 @@ #include <linux/cramfs_fs.h> #include <linux/slab.h> #include <linux/cramfs_fs_sb.h> -#include <linux/buffer_head.h> #include <linux/vfs.h> #include <linux/mutex.h> diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 517f211..80a4574 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -25,7 +25,6 @@ #include <linux/writeback.h> #include <linux/blkdev.h> #include <linux/backing-dev.h> -#include <linux/buffer_head.h> #include <linux/tracepoint.h> #include "internal.h" @@ -12,7 +12,7 @@ #include <linux/mutex.h> #include <linux/exportfs.h> #include <linux/writeback.h> -#include <linux/buffer_head.h> +#include <linux/buffer_head.h> /* sync_mapping_buffers */ #include <asm/uaccess.h> diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 5b572c8..5d81e92 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -73,7 +73,6 @@ #include <linux/security.h> #include <linux/kmod.h> #include <linux/namei.h> -#include <linux/buffer_head.h> #include <linux/capability.h> #include <linux/quotaops.h> #include "../internal.h" /* ugh */ diff --git a/fs/quota/quota.c b/fs/quota/quota.c index 35f4b0e..7898cd6 100644 --- a/fs/quota/quota.c +++ b/fs/quota/quota.c @@ -13,7 +13,6 @@ #include <linux/kernel.h> #include <linux/security.h> #include <linux/syscalls.h> -#include <linux/buffer_head.h> #include <linux/capability.h> #include <linux/quotaops.h> #include <linux/types.h> diff --git a/fs/splice.c b/fs/splice.c index fa2defa..1ec0493 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -25,7 +25,6 @@ #include <linux/mm_inline.h> #include <linux/swap.h> #include <linux/writeback.h> -#include <linux/buffer_head.h> #include <linux/module.h> #include <linux/syscalls.h> #include <linux/uio.h> @@ -14,7 +14,6 @@ #include <linux/linkage.h> #include <linux/pagemap.h> #include <linux/quotaops.h> -#include <linux/buffer_head.h> #include <linux/backing-dev.h> #include "internal.h" diff --git a/include/linux/fs.h b/include/linux/fs.h index cec429d7..e853ba5 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2092,6 +2092,7 @@ extern void bd_forget(struct inode *inode); extern void bdput(struct block_device *); extern void invalidate_bdev(struct block_device *); extern int sync_blockdev(struct block_device *bdev); +extern void kill_bdev(struct block_device *); extern struct super_block *freeze_bdev(struct block_device *); extern void emergency_thaw_all(void); extern int thaw_bdev(struct block_device *bdev, struct super_block *sb); @@ -2099,6 +2100,7 @@ extern int fsync_bdev(struct block_device *); #else static inline void bd_forget(struct inode *inode) {} static inline int sync_blockdev(struct block_device *bdev) { return 0; } +static inline void kill_bdev(struct block_device *bdev) {} static inline void invalidate_bdev(struct block_device *bdev) {} static inline struct super_block *freeze_bdev(struct block_device *sb) @@ -2415,6 +2417,7 @@ extern ssize_t blkdev_aio_write(struct kiocb *iocb, const struct iovec *iov, unsigned long nr_segs, loff_t pos); extern int blkdev_fsync(struct file *filp, loff_t start, loff_t end, int datasync); +extern void block_sync_page(struct page *page); /* fs/splice.c */ extern ssize_t generic_file_splice_read(struct file *, loff_t *, diff --git a/kernel/power/swap.c b/kernel/power/swap.c index 11a594c..3739ecc 100644 --- a/kernel/power/swap.c +++ b/kernel/power/swap.c @@ -18,7 +18,6 @@ #include <linux/bitops.h> #include <linux/genhd.h> #include <linux/device.h> -#include <linux/buffer_head.h> #include <linux/bio.h> #include <linux/blkdev.h> #include <linux/swap.h> diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 50f0824..8616ef3 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -32,7 +32,7 @@ #include <linux/sysctl.h> #include <linux/cpu.h> #include <linux/syscalls.h> -#include <linux/buffer_head.h> +#include <linux/buffer_head.h> /* __set_page_dirty_buffers */ #include <linux/pagevec.h> #include <trace/events/writeback.h> diff --git a/mm/swap_state.c b/mm/swap_state.c index 78cc4d1..ea6b32d 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -13,7 +13,6 @@ #include <linux/swapops.h> #include <linux/init.h> #include <linux/pagemap.h> -#include <linux/buffer_head.h> #include <linux/backing-dev.h> #include <linux/pagevec.h> #include <linux/migrate.h> |
