Messages in this thread Patch in this message | | | From | Johannes Weiner <> | Subject | [PATCH 10/11] PageSlab: eliminate unnecessary compound_head() call in mm/usercopy | Date | Tue, 12 Oct 2021 14:01:47 -0400 |
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Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> --- mm/usercopy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/usercopy.c b/mm/usercopy.c index 924e236522da..b3de3c4eefba 100644 --- a/mm/usercopy.c +++ b/mm/usercopy.c @@ -235,7 +235,7 @@ static inline void check_heap_object(const void *ptr, unsigned long n, */ page = compound_head(kmap_to_page((void *)ptr)); - if (PageSlab(compound_head(page))) { + if (PageSlab(page)) { /* Check slab allocator for flags and size. */ __check_heap_object(ptr, n, page, to_user); } else { -- 2.32.0
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