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authorAnshuman Khandual <anshuman.khandual@arm.com>2020-06-03 15:59:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-06-03 20:09:45 -0700
commitae70eddd5633fc71dccf210f237c5aefc96f4332 (patch)
tree9194a759aa0799e2f654340f6a7bfaf7ff5b88d7 /include/linux
parentaa09259109583b98b9d9e7ed0d8eb1b880d1eb97 (diff)
downloadlinux-ae70eddd5633fc71dccf210f237c5aefc96f4332.tar.gz
mm/page_alloc: restrict and formalize compound_page_dtors[]
Restrict elements in compound_page_dtors[] array per NR_COMPOUND_DTORS and explicitly position them according to enum compound_dtor_id. This improves protection against possible misalignment between compound_page_dtors[] and enum compound_dtor_id later on. Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: David Hildenbrand <david@redhat.com> Link: http://lkml.kernel.org/r/1589795958-19317-1-git-send-email-anshuman.khandual@arm.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/mm.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 4141ebcb3a65..32f3c17715ac 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -867,7 +867,7 @@ enum compound_dtor_id {
#endif
NR_COMPOUND_DTORS,
};
-extern compound_page_dtor * const compound_page_dtors[];
+extern compound_page_dtor * const compound_page_dtors[NR_COMPOUND_DTORS];
static inline void set_compound_page_dtor(struct page *page,
enum compound_dtor_id compound_dtor)