diff options
| -rw-r--r-- | mm/page-writeback.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 5240e426c1f7..945559fb63d2 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -46,7 +46,7 @@ static long ratelimit_pages = 32; static long total_pages; /* The total number of pages in the machine. */ -static int dirty_exceeded; /* Dirty mem may be over limit */ +static int dirty_exceeded __cacheline_aligned_in_smp; /* Dirty mem may be over limit */ /* * When balance_dirty_pages decides that the caller needs to perform some @@ -212,7 +212,8 @@ static void balance_dirty_pages(struct address_space *mapping) if (nr_reclaimable + wbs.nr_writeback <= dirty_thresh) break; - dirty_exceeded = 1; + if (!dirty_exceeded) + dirty_exceeded = 1; /* Note: nr_reclaimable denotes nr_dirty + nr_unstable. * Unstable writes are a feature of certain networked @@ -234,7 +235,7 @@ static void balance_dirty_pages(struct address_space *mapping) blk_congestion_wait(WRITE, HZ/10); } - if (nr_reclaimable + wbs.nr_writeback <= dirty_thresh) + if (nr_reclaimable + wbs.nr_writeback <= dirty_thresh && dirty_exceeded) dirty_exceeded = 0; if (writeback_in_progress(bdi)) |