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Merge tag 'writeback-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux

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Pull writeback fixes from Wu Fengguang:
 "Two writeback fixes

   - fix negative (setpoint - dirty) in 32bit archs

   - use down_read_trylock() in writeback_inodes_sb(_nr)_if_idle()"

* tag 'writeback-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux:
  Negative (setpoint-dirty) in bdi_position_ratio()
  vfs: re-implement writeback_inodes_sb(_nr)_if_idle() and rename them
This commit is contained in:
Linus Torvalds
2013-02-28 13:21:44 -08:00
parent f042fea0da ed84825b78
commit de1a2262b0
5 changed files with 37 additions and 59 deletions
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8
fs/ext4/inode.c
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@@ -2512,12 +2512,8 @@ static int ext4_nonda_switch(struct super_block *sb)
/*
* Start pushing delalloc when 1/2 of free blocks are dirty.
*/
if (dirty_blocks && (free_blocks < 2 * dirty_blocks) &&
!writeback_in_progress(sb->s_bdi) &&
down_read_trylock(&sb->s_umount)) {
writeback_inodes_sb(sb, WB_REASON_FS_FREE_SPACE);
up_read(&sb->s_umount);
}
if (dirty_blocks && (free_blocks < 2 * dirty_blocks))
try_to_writeback_inodes_sb(sb, WB_REASON_FS_FREE_SPACE);
if (2 * free_blocks < 3 * dirty_blocks ||
free_blocks < (dirty_blocks + EXT4_FREECLUSTERS_WATERMARK)) {