>From 42ccbfa209e4799e5f60b5ec6878da1c447d29b2 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Wed, 7 May 2008 21:01:30 +0300 Subject: [PATCH] VFS: export sync_sb_inodes This patch exports the 'sync_sb_inodes()' which is needed for UBIFS because it have to force write-back from time to time. Namely, the UBIFS budgeting subsystem forces write-back when its pessimistic callculations show that there is not free space on the media. Signed-off-by: Artem Bityutskiy --- fs/fs-writeback.c | 11 +++++++++-- include/linux/fs.h | 2 ++ 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 16519fe..25adfc3 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -439,8 +439,8 @@ __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 */ @@ -526,6 +526,13 @@ sync_sb_inodes(struct super_block *sb, struct writeback_control *wbc) 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. diff --git a/include/linux/fs.h b/include/linux/fs.h index 7e0fa9e..85ee6cf 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1730,6 +1730,8 @@ static inline void invalidate_remote_inode(struct inode *inode) extern int invalidate_inode_pages2(struct address_space *mapping); extern int invalidate_inode_pages2_range(struct address_space *mapping, pgoff_t start, pgoff_t end); +extern void generic_sync_sb_inodes(struct super_block *sb, + struct writeback_control *wbc); extern int write_inode_now(struct inode *, int); extern int filemap_fdatawrite(struct address_space *); extern int filemap_flush(struct address_space *); -- 1.5.4.1