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authorShaohua Li <shaohua.li@intel.com>2010-11-11 17:05:17 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2010-11-12 10:55:31 -0500
commit1dce071e18b7264457d17c0dec4c7e430bfaee7d (patch)
treeced52f7f8e4177f9ea37f891f4d33d0a5109e651 /Documentation/i2c
parent38715258aa2e8cd94bd4aafadc544e5104efd551 (diff)
vmscan: avoid setting zone congested if no page dirty
nr_dirty and nr_congested are increased only when the page is dirty. So if all pages are clean, both them will be zero. In this case, we should not mark the zone congested. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Reviewed-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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