The patch titled
Subject: mm,page_owner: don't remove __GFP_NOLOCKDEP in add_stack_record_to_list
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mmpage_owner-dont-remove-__gfp_nolockdep-in-add_stack_record_to_list.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mmpage_owner-dont-remove-__gfp_nolockdep-in-add_stack_record_to_list.patch
This patch will later appear in the mm-hotfixes-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: Christoph Hellwig <hch@xxxxxx>
Subject: mm,page_owner: don't remove __GFP_NOLOCKDEP in add_stack_record_to_list
Date: Mon, 29 Apr 2024 10:28:28 +0200
Otherwise we'll generate false lockdep positives.
Link: https://lkml.kernel.org/r/20240429082828.1615986-1-hch@xxxxxx
Fixes: 217b2119b9e2 ("mm,page_owner: implement the tracking of the stacks count")
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Vlastimil Babka <vbabka@xxxxxxx>
Acked-by: Oscar Salvador <osalvador@xxxxxxx>
Cc: Andrey Konovalov <andreyknvl@xxxxxxxxx>
Cc: Darrick J. Wong <djwong@xxxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_owner.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/page_owner.c~mmpage_owner-dont-remove-__gfp_nolockdep-in-add_stack_record_to_list
+++ a/mm/page_owner.c
@@ -170,7 +170,7 @@ static void add_stack_record_to_list(str
/* Filter gfp_mask the same way stackdepot does, for consistency */
gfp_mask &= ~GFP_ZONEMASK;
- gfp_mask &= (GFP_ATOMIC | GFP_KERNEL);
+ gfp_mask &= (GFP_ATOMIC | GFP_KERNEL | __GFP_NOLOCKDEP);
gfp_mask |= __GFP_NOWARN;
set_current_in_page_owner();
_
Patches currently in -mm which might be from hch@xxxxxx are
mmpage_owner-dont-remove-__gfp_nolockdep-in-add_stack_record_to_list.patch
