diff options
| author | Uladzislau Rezki (Sony) <urezki@gmail.com> | 2025-10-07 14:20:32 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-11-16 17:27:54 -0800 |
| commit | b186a94227b753f2fdcab0df29dfc636c63ac329 (patch) | |
| tree | 536cafa9ef5c71c28e872b3915ca48bea3b6d47e /mm/percpu-vm.c | |
| parent | ad435e79f8f5d6a5dae8ec122b14802d810defbf (diff) | |
kmsan: remove hard-coded GFP_KERNEL flags
kmsan_vmap_pages_range_noflush() allocates its temp s_pages/o_pages arrays
with GFP_KERNEL, which may sleep. This is inconsistent with vmalloc() as
it will support non-blocking requests later.
Plumb gfp_mask through the kmsan_vmap_pages_range_noflush(), so it can use
it internally for its demand.
Please note, the subsequent __vmap_pages_range_noflush() still uses
GFP_KERNEL and can sleep. If a caller runs under reclaim constraints,
sleeping is forbidden, it must establish the appropriate memalloc scope
API.
Link: https://lkml.kernel.org/r/20251007122035.56347-8-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/percpu-vm.c')
| -rw-r--r-- | mm/percpu-vm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/percpu-vm.c b/mm/percpu-vm.c index cd69caf6aa8d..4f5937090590 100644 --- a/mm/percpu-vm.c +++ b/mm/percpu-vm.c @@ -194,7 +194,7 @@ static int __pcpu_map_pages(unsigned long addr, struct page **pages, int nr_pages) { return vmap_pages_range_noflush(addr, addr + (nr_pages << PAGE_SHIFT), - PAGE_KERNEL, pages, PAGE_SHIFT); + PAGE_KERNEL, pages, PAGE_SHIFT, GFP_KERNEL); } /** |