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| author |   Michal Hocko <mhocko@suse.com> | 2016-03-17 14:19:32 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-17 15:09:34 -0700 |
| commit | 0f352e5392c86d054998dd6526f2fdc33ec4bed5 (patch) | |
| tree | dc1e5436e7c42ed026dbd3725a49792f4d7aa3b5 /mm/page_alloc.c | |
| parent | mm/page_ref: add tracepoint to track down page reference manipulation (diff) | |
| download | linux-dev-0f352e5392c86d054998dd6526f2fdc33ec4bed5.tar.xz linux-dev-0f352e5392c86d054998dd6526f2fdc33ec4bed5.zip | |
mm: remove __GFP_NOFAIL is deprecated comment
Commit 647757197cd3 ("mm: clarify __GFP_NOFAIL deprecation status") was
incomplete and didn't remove the comment about __GFP_NOFAIL being
deprecated in buffered_rmqueue.
Let's get rid of this leftover but keep the WARN_ON_ONCE for order > 1
because we should really discourage from using __GFP_NOFAIL with higher
order allocations because those are just too subtle.
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 30134a8f7cc8..30f01c6f6b88 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2350,19 +2350,11 @@ struct page *buffered_rmqueue(struct zone *preferred_zone, list_del(&page->lru); pcp->count--; } else { - if (unlikely(gfp_flags & __GFP_NOFAIL)) { - /* - * __GFP_NOFAIL is not to be used in new code. - * - * All __GFP_NOFAIL callers should be fixed so that they - * properly detect and handle allocation failures. - * - * We most definitely don't want callers attempting to - * allocate greater than order-1 page units with - * __GFP_NOFAIL. - */ - WARN_ON_ONCE(order > 1); - } + /* + * We most definitely don't want callers attempting to + * allocate greater than order-1 page units with __GFP_NOFAIL. + */ + WARN_ON_ONCE((gfp_flags & __GFP_NOFAIL) && (order > 1)); spin_lock_irqsave(&zone->lock, flags); page = NULL; |