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authorMel Gorman <mgorman@suse.de>2014-01-21 15:50:59 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-01-21 16:19:48 -0800
commit1c5e9c27cbd966c7f0038698d5dcd5ada3574f47 (patch)
treea546cec0019aa3b726ba06e50ce38f960ee8f222 /include/trace
parent1c30e0177e4f41a11cb88b0f1f056ccebfe0fff4 (diff)
mm: numa: limit scope of lock for NUMA migrate rate limiting
NUMA migrate rate limiting protects a migration counter and window using a lock but in some cases this can be a contended lock. It is not critical that the number of pages be perfect, lost updates are acceptable. Reduce the importance of this lock. Signed-off-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Alex Thorlton <athorlton@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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