Commit fd8acc00 authored Jul 11, 2024 by Suren Baghdasaryan Committed by Andrew Morton Jul 17, 2024

lib: reuse page_ext_data() to obtain codetag_ref

codetag_ref_from_page_ext() reimplements the same calculation as
page_ext_data().  Reuse existing function instead.

Link: https://lkml.kernel.org/r/20240711220457.1751071-2-surenb@google.com


Fixes: dcfe378c ("lib: introduce support for page allocation tagging")
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Sourav Panda <souravpanda@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

parent 4810a82c

include/linux/pgalloc_tag.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -15,7 +15,7 @@ extern struct page_ext_operations page_alloc_tagging_ops;

		static inline union codetag_ref codetag_ref_from_page_ext(struct page_ext page_ext)
		{
		return (void *)page_ext + page_alloc_tagging_ops.offset;
		return (union codetag_ref *)page_ext_data(page_ext, &page_alloc_tagging_ops);
		}

		static inline struct page_ext page_ext_from_codetag_ref(union codetag_ref ref)