diff options
| author | Mel Gorman <mgorman@suse.de> | 2012-08-01 01:44:03 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-08-01 03:42:45 +0200 |
| commit | b37f1dd0f543d9714f96c2f9b9f74f7bdfdfdf31 (patch) | |
| tree | 4d01913bd950d60c65605cd14e0ff88b74f5f716 /mm/slab.c | |
| parent | mm: slub: optimise the SLUB fast path to avoid pfmemalloc checks (diff) | |
| download | linux-b37f1dd0f543d9714f96c2f9b9f74f7bdfdfdf31.tar.xz linux-b37f1dd0f543d9714f96c2f9b9f74f7bdfdfdf31.zip | |
mm: introduce __GFP_MEMALLOC to allow access to emergency reserves
__GFP_MEMALLOC will allow the allocation to disregard the watermarks, much
like PF_MEMALLOC. It allows one to pass along the memalloc state in
object related allocation flags as opposed to task related flags, such as
sk->sk_allocation. This removes the need for ALLOC_PFMEMALLOC as callers
using __GFP_MEMALLOC can get the ALLOC_NO_WATERMARK flag which is now
enough to identify allocations related to page reclaim.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: David Miller <davem@davemloft.net>
Cc: Neil Brown <neilb@suse.de>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: Eric B Munson <emunson@mgebm.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slab.c')
| -rw-r--r-- | mm/slab.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/slab.c b/mm/slab.c index 55d84a22ad96..77be18dab73c 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -1884,7 +1884,7 @@ static void *kmem_getpages(struct kmem_cache *cachep, gfp_t flags, int nodeid) return NULL; } - /* Record if ALLOC_PFMEMALLOC was set when allocating the slab */ + /* Record if ALLOC_NO_WATERMARKS was set when allocating the slab */ if (unlikely(page->pfmemalloc)) pfmemalloc_active = true; |