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| author |   KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2010-09-09 16:38:01 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2010-09-09 18:57:24 -0700 |
| commit | 0dcc48c15f63ee86c2fcd33968b08d651f0360a5 (patch) | |
| tree | d182a43200204be2fea04bcb80b824c6f4941267 /include | |
| parent | mm: compaction: handle active and inactive fairly in too_many_isolated (diff) | |
| download | linux-dev-0dcc48c15f63ee86c2fcd33968b08d651f0360a5.tar.xz linux-dev-0dcc48c15f63ee86c2fcd33968b08d651f0360a5.zip | |
memory hotplug: fix next block calculation in is_removable
next_active_pageblock() is for finding next _used_ freeblock. It skips
several blocks when it finds there are a chunk of free pages lager than
pageblock. But it has 2 bugs.
1. We have no lock. page_order(page) - pageblock_order can be minus.
2. pageblocks_stride += is wrong. it should skip page_order(p) of pages.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions