diff options
| author | Joonsoo Kim <iamjoonsoo.kim@lge.com> | 2016-03-16 00:57:48 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-16 02:55:16 +0300 |
| commit | e1409c325fdc1fef7b3d8025c51892355f065d15 (patch) | |
| tree | 43486b8130eba24ee7380e0ccddf49551fd0b420 /kernel/padata.c | |
| parent | 623446e4dc45b37740268165107cc63abb3022f0 (diff) | |
| download | linux-e1409c325fdc1fef7b3d8025c51892355f065d15.tar.xz | |
mm/compaction: pass only pageblock aligned range to pageblock_pfn_to_page
pageblock_pfn_to_page() is used to check there is valid pfn and all
pages in the pageblock is in a single zone. If there is a hole in the
pageblock, passing arbitrary position to pageblock_pfn_to_page() could
cause to skip whole pageblock scanning, instead of just skipping the
hole page. For deterministic behaviour, it's better to always pass
pageblock aligned range to pageblock_pfn_to_page(). It will also help
further optimization on pageblock_pfn_to_page() in the following patch.
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Aaron Lu <aaron.lu@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/padata.c')
0 files changed, 0 insertions, 0 deletions