The patch titled
Subject: lib: reuse page_ext_data() to obtain codetag_ref
has been added to the -mm mm-unstable branch. Its filename is
lib-reuse-page_ext_data-to-obtain-codetag_ref.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/lib-reuse-page_ext_data-to-obtain-codetag_ref.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Subject: lib: reuse page_ext_data() to obtain codetag_ref
Date: Thu, 11 Jul 2024 15:04:56 -0700
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@xxxxxxxxxx
Fixes: dcfe378c81f7 ("lib: introduce support for page allocation tagging")
Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Cc: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
Cc: Sourav Panda <souravpanda@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/pgalloc_tag.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/linux/pgalloc_tag.h~lib-reuse-page_ext_data-to-obtain-codetag_ref
+++ a/include/linux/pgalloc_tag.h
@@ -15,7 +15,7 @@ extern struct page_ext_operations page_a
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)
_
Patches currently in -mm which might be from surenb@xxxxxxxxxx are
alloc_tag-export-memory-allocation-profiling-symbols-used-by-modules.patch
mm-add-comments-for-allocation-helpers-explaining-why-they-are-macros.patch
lib-add-missing-newline-character-in-the-warning-message.patch
lib-reuse-page_ext_data-to-obtain-codetag_ref.patch
alloc_tag-fix-page_ext_get-page_ext_put-sequence-during-page-splitting.patch
