]> git.openfabrics.org - ~shefty/rdma-dev.git/commit
mm: fix off-by-two in __zone_watermark_ok()
authorMichal Hocko <mhocko@suse.cz>
Tue, 10 Jan 2012 23:08:02 +0000 (15:08 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 11 Jan 2012 00:30:44 +0000 (16:30 -0800)
commitdf0a6daa01fa3856c08f4274d4f21a8092caa480
tree089c112e98c87c4326443c21711bf9410c1989ce
parent9571a982903bf9dcbca2479fd3e7dafd2211ecf9
mm: fix off-by-two in __zone_watermark_ok()

Commit 88f5acf88ae6 ("mm: page allocator: adjust the per-cpu counter
threshold when memory is low") changed the form how free_pages is
calculated but it forgot that we used to do free_pages - ((1 << order) -
1) so we ended up with off-by-two when calculating free_pages.

Reported-by: Wang Sheng-Hui <shhuiw@gmail.com>
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/page_alloc.c