[merged mm-stable] mm-kmemleak-compact-kmemleak_object-further.patch removed from -mm tree

[merged mm-stable] mm-kmemleak-compact-kmemleak_object-further.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/kmemleak: compact kmemleak_object further
has been removed from the -mm tree.  Its filename was
     mm-kmemleak-compact-kmemleak_object-further.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Waiman Long <longman@redhat.com>
Subject: mm/kmemleak: compact kmemleak_object further
Date: Thu, 7 Mar 2024 14:05:47 -0500

Patch series "mm/kmemleak: Minor cleanup & performance tuning".

This series contains 2 simple cleanup patches to slightly reduce memory
and performance overhead.


This patch (of 2):

With commit 56a61617dd22 ("mm: use stack_depot for recording kmemleak's
backtrace"), the size of kmemleak_object has been reduced by 128 bytes for
64-bit arches.  The replacement "depot_stack_handle_t trace_handle" is
actually just 4 bytes long leaving a hole of 4 bytes.  By moving up
trace_handle to another existing 4-byte hold, we can save 8 more bytes
from kmemleak_object reducing its overall size from 248 to 240 bytes.

Link: https://lkml.kernel.org/r/20240307190548.963626-1-longman@redhat.com
Link: https://lkml.kernel.org/r/20240307190548.963626-2-longman@redhat.com
Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/kmemleak.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/kmemleak.c~mm-kmemleak-compact-kmemleak_object-further
+++ a/mm/kmemleak.c
@@ -158,9 +158,9 @@ struct kmemleak_object {
 	int count;
 	/* checksum for detecting modified objects */
 	u32 checksum;
+	depot_stack_handle_t trace_handle;
 	/* memory ranges to be scanned inside an object (empty for all) */
 	struct hlist_head area_list;
-	depot_stack_handle_t trace_handle;
 	unsigned long jiffies;		/* creation timestamp */
 	pid_t pid;			/* pid of the current task */
 	char comm[TASK_COMM_LEN];	/* executable name */
_

Patches currently in -mm which might be from longman@redhat.com are