diff options
| author |   Mel Gorman <mgorman@suse.de> | 2013-09-11 14:22:19 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-11 15:57:55 -0700 |
| commit | 3a7200af3d9227767869f451ed747aff07d8df48 (patch) | |
| tree | 3eb938e72d7acaff416cfcd05f96b7cbf6ed9736 /mm/compaction.c | |
| parent | kmemcg: don't allocate extra memory for root memcg_cache_params (diff) | |
| download | linux-dev-3a7200af3d9227767869f451ed747aff07d8df48.tar.xz linux-dev-3a7200af3d9227767869f451ed747aff07d8df48.zip | |
mm: compaction: do not compact pgdat for order-0
If kswapd was reclaiming for a high order and resets it to 0 due to
fragmentation it will still call compact_pgdat. For the most part, this
will fail a compaction_suitable() test and not compact but it is
unnecessarily sloppy. It could be fixed in the caller but fix it in the
API instead.
[dhillf@gmail.com: pointed out that it was a potential problem]
Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: Hillf Danton <dhillf@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/compaction.c')
| -rw-r--r-- | mm/compaction.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/compaction.c b/mm/compaction.c index 05ccb4cc0bdb..c43789388cd8 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -1131,6 +1131,9 @@ void compact_pgdat(pg_data_t *pgdat, int order) .sync = false, }; + if (!order) + return; + __compact_pgdat(pgdat, &cc); } |