diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-16 15:02:57 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-16 15:02:57 -0700 |
commit | 9c1be0c4712fe760d8969427ef91107e9c062d91 (patch) | |
tree | 01210aba49c120116bb99ba031ff86a525ffb63d /fs/fs-writeback.c | |
parent | 42fdd144a40f3afaccaa7ea538268bad3596439e (diff) | |
parent | 0d7eff873caaeac84de01a1acdca983d2c7ba3fe (diff) |
Merge branch 'for_linus' of git://git.infradead.org/~dedekind/ubifs-2.6
* 'for_linus' of git://git.infradead.org/~dedekind/ubifs-2.6:
UBIFS: include to compilation
UBIFS: add new flash file system
UBIFS: add brief documentation
MAINTAINERS: add UBIFS section
do_mounts: allow UBI root device name
VFS: export sync_sb_inodes
VFS: move inode_lock into sync_sb_inodes
Diffstat (limited to 'fs/fs-writeback.c')
-rw-r--r-- | fs/fs-writeback.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index ae45f77765c..25adfc3c693 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -424,8 +424,6 @@ __writeback_single_inode(struct inode *inode, struct writeback_control *wbc) * WB_SYNC_HOLD is a hack for sys_sync(): reattach the inode to sb->s_dirty so * that it can be located for waiting on in __writeback_single_inode(). * - * Called under inode_lock. - * * If `bdi' is non-zero then we're being asked to writeback a specific queue. * This function assumes that the blockdev superblock's inodes are backed by * a variety of queues, so all inodes are searched. For other superblocks, @@ -441,11 +439,12 @@ __writeback_single_inode(struct inode *inode, struct writeback_control *wbc) * on the writer throttling path, and we get decent balancing between many * throttled threads: we don't want them all piling up on inode_sync_wait. */ -static void -sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc) +void generic_sync_sb_inodes(struct super_block *sb, + struct writeback_control *wbc) { const unsigned long start = jiffies; /* livelock avoidance */ + spin_lock(&inode_lock); if (!wbc->for_kupdate || list_empty(&sb->s_io)) queue_io(sb, wbc->older_than_this); @@ -524,8 +523,16 @@ sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc) if (!list_empty(&sb->s_more_io)) wbc->more_io = 1; } + spin_unlock(&inode_lock); return; /* Leave any unwritten inodes on s_io */ } +EXPORT_SYMBOL_GPL(generic_sync_sb_inodes); + +static void sync_sb_inodes(struct super_block *sb, + struct writeback_control *wbc) +{ + generic_sync_sb_inodes(sb, wbc); +} /* * Start writeback of dirty pagecache data against all unlocked inodes. @@ -565,11 +572,8 @@ restart: * be unmounted by the time it is released. */ if (down_read_trylock(&sb->s_umount)) { - if (sb->s_root) { - spin_lock(&inode_lock); + if (sb->s_root) sync_sb_inodes(sb, wbc); - spin_unlock(&inode_lock); - } up_read(&sb->s_umount); } spin_lock(&sb_lock); @@ -607,9 +611,7 @@ void sync_inodes_sb(struct super_block *sb, int wait) (inodes_stat.nr_inodes - inodes_stat.nr_unused) + nr_dirty + nr_unstable; wbc.nr_to_write += wbc.nr_to_write / 2; /* Bit more for luck */ - spin_lock(&inode_lock); sync_sb_inodes(sb, &wbc); - spin_unlock(&inode_lock); } /* |