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authorMichal Hocko <mhocko@suse.com>2016-03-17 14:19:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-03-17 15:09:34 -0700
commit0f352e5392c86d054998dd6526f2fdc33ec4bed5 (patch)
treedc1e5436e7c42ed026dbd3725a49792f4d7aa3b5 /mm
parent95813b8faa0cd315f61a8b9d9c523792370b693e (diff)
downloadop-kernel-dev-0f352e5392c86d054998dd6526f2fdc33ec4bed5.zip
op-kernel-dev-0f352e5392c86d054998dd6526f2fdc33ec4bed5.tar.gz
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')
-rw-r--r--mm/page_alloc.c18
1 files changed, 5 insertions, 13 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 30134a8..30f01c6 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;
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