diff options
| author | Andrea Arcangeli <[email protected]> | 2011-01-13 15:46:49 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2011-01-13 17:32:42 -0800 |
| commit | 5c3240d92e29ae7bfb9cb58a9b37e80ab40894ff (patch) | |
| tree | fffa9f90492b61ef1578e1c41118024c81d77863 | |
| parent | 32dba98e085f8b2b4345887df9abf5e0e93bfc12 (diff) | |
thp: don't alloc harder for gfp nomemalloc even if nowait
Not worth throwing away the precious reserved free memory pool for
allocations that can fail gracefully (either through mempool or because
they're transhuge allocations later falling back to 4k allocations).
Signed-off-by: Andrea Arcangeli <[email protected]>
Acked-by: Rik van Riel <[email protected]>
Reviewed-by: KOSAKI Motohiro <[email protected]>
Acked-by: Mel Gorman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | mm/page_alloc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index bbd0423f2820..e7664b9f706c 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1971,7 +1971,12 @@ gfp_to_alloc_flags(gfp_t gfp_mask) alloc_flags |= (__force int) (gfp_mask & __GFP_HIGH); if (!wait) { - alloc_flags |= ALLOC_HARDER; + /* + * Not worth trying to allocate harder for + * __GFP_NOMEMALLOC even if it can't schedule. + */ + if (!(gfp_mask & __GFP_NOMEMALLOC)) + alloc_flags |= ALLOC_HARDER; /* * Ignore cpuset if GFP_ATOMIC (!wait) rather than fail alloc. * See also cpuset_zone_allowed() comment in kernel/cpuset.c. |