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Use time based periods to age the writeback proportions,

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which can adapt equally well to fast/slow devices.
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Merge tag 'writeback-proportions' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux

Pull writeback updates from Wu Fengguang:
 "Use time based periods to age the writeback proportions, which can
  adapt equally well to fast/slow devices."

Fix up trivial conflict in comment in fs/sync.c

* tag 'writeback-proportions' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux:
  writeback: Fix some comment errors
  block: Convert BDI proportion calculations to flexible proportions
  lib: Fix possible deadlock in flexible proportion code
  lib: Proportions with flexible period
This commit is contained in:
Linus Torvalds 2012-07-30 22:14:04 -07:00
commit 2e3ee61348
8 changed files with 448 additions and 50 deletions
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4
fs/fs-writeback.c
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@ -628,8 +628,8 @@ static long writeback_sb_inodes(struct super_block *sb,
}
/*
* Don't bother with new inodes or inodes beeing freed, first
* kind does not need peridic writeout yet, and for the latter
* Don't bother with new inodes or inodes being freed, first
* kind does not need periodic writeout yet, and for the latter
* kind writeout is handled by the freer.
*/
spin_lock(&inode->i_lock);