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| author | Uladzislau Rezki (Sony) <urezki@gmail.com> | 2025-10-07 14:20:33 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-11-16 17:27:54 -0800 |
| commit | 7241bb2ea33d5ff50b77a5981342bcc826bef52a (patch) | |
| tree | a702a33f3aa2c2b0cbb1072ff73943a533376d0e /mm/vmalloc.c | |
| parent | b186a94227b753f2fdcab0df29dfc636c63ac329 (diff) | |
| download | tip-7241bb2ea33d5ff50b77a5981342bcc826bef52a.tar.gz | |
mm: skip might_alloc() warnings when PF_MEMALLOC is set
might_alloc() catches invalid blocking allocations in contexts where
sleeping is not allowed.
However when PF_MEMALLOC is set, the page allocator already skips reclaim
and other blocking paths. In such cases, a blocking gfp_mask does not
actually lead to blocking, so triggering might_alloc() splats is
misleading.
Adjust might_alloc() to skip warnings when the current task has
PF_MEMALLOC set, matching the allocator's actual blocking behaviour.
Link: https://lkml.kernel.org/r/20251007122035.56347-9-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Baoquan He <bhe@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Marco Elver <elver@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/vmalloc.c')
0 files changed, 0 insertions, 0 deletions