memcg: page_alloc: skip bulk allocator for __GFP_ACCOUNT
authorShakeel Butt <shakeelb@google.com>
Thu, 28 Oct 2021 21:36:04 +0000 (14:36 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 29 Oct 2021 00:18:54 +0000 (17:18 -0700)
commit8dcb3060d81dbfa8d954a2ec64ef7ca330f5bb4d
tree06ac50f2acd7f84ca930c1b220483f0d8f145a44
parent411a44c24a561e449b592ff631b7ae321f1eb559
memcg: page_alloc: skip bulk allocator for __GFP_ACCOUNT

Commit 5c1f4e690eec ("mm/vmalloc: switch to bulk allocator in
__vmalloc_area_node()") switched to bulk page allocator for order 0
allocation backing vmalloc.  However bulk page allocator does not
support __GFP_ACCOUNT allocations and there are several users of
kvmalloc(__GFP_ACCOUNT).

For now make __GFP_ACCOUNT allocations bypass bulk page allocator.  In
future if there is workload that can be significantly improved with the
bulk page allocator with __GFP_ACCCOUNT support, we can revisit the
decision.

Link: https://lkml.kernel.org/r/20211014151607.2171970-1-shakeelb@google.com
Fixes: 5c1f4e690eec ("mm/vmalloc: switch to bulk allocator in __vmalloc_area_node()")
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Reported-by: Vasily Averin <vvs@virtuozzo.com>
Tested-by: Vasily Averin <vvs@virtuozzo.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/page_alloc.c