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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-07 09:59:02 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-07 09:59:02 -0800 |
| commit | 6e6bc67982573c221d12cbd123d34395f9f6e22e (patch) | |
| tree | a63ac571bedace9fc04515cd95da1c49a1304b68 | |
| parent | ff4d7fa8c32f6ec513fb792c060809ec82d53ea4 (diff) | |
| parent | 3a73dbbc9bb3fc8594cd67af4db6c563175dfddb (diff) | |
Merge branch 'urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux
* 'urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux:
writeback: fix uninitialized task_ratelimit
| -rw-r--r-- | mm/page-writeback.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 0360d1b5a1d..a3278f00523 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -1097,13 +1097,13 @@ static void balance_dirty_pages(struct address_space *mapping, pos_ratio = bdi_position_ratio(bdi, dirty_thresh, background_thresh, nr_dirty, bdi_thresh, bdi_dirty); - if (unlikely(pos_ratio == 0)) { + task_ratelimit = ((u64)dirty_ratelimit * pos_ratio) >> + RATELIMIT_CALC_SHIFT; + if (unlikely(task_ratelimit == 0)) { pause = max_pause; goto pause; } - task_ratelimit = (u64)dirty_ratelimit * - pos_ratio >> RATELIMIT_CALC_SHIFT; - pause = (HZ * pages_dirtied) / (task_ratelimit | 1); + pause = HZ * pages_dirtied / task_ratelimit; if (unlikely(pause <= 0)) { trace_balance_dirty_pages(bdi, dirty_thresh, |