[merged mm-stable] mm-vmalloc-offload-free_vmap_area_lock-lock-fix.patch removed from -mm tree

[merged mm-stable] mm-vmalloc-offload-free_vmap_area_lock-lock-fix.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm: vmalloc: add a scan area of VA only once
has been removed from the -mm tree.  Its filename was
     mm-vmalloc-offload-free_vmap_area_lock-lock-fix.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: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
Subject: mm: vmalloc: add a scan area of VA only once
Date: Fri, 2 Feb 2024 20:06:28 +0100

Invoke a kmemleak_scan_area() function only for newly allocated objects to
add a scan area within that object.  There is no reason to add a same scan
area(pointer to beginning or inside the object) several times.  If a VA is
obtained from the cache its scan area has already been associated.

Link: https://lkml.kernel.org/r/20240202190628.47806-1-urezki@gmail.com
Fixes: 7db166b4aa0d ("mm: vmalloc: offload free_vmap_area_lock lock")
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Joel Fernandes (Google) <joel@joelfernandes.org>
Cc: Kazuhito Hagio <k-hagio-ab@nec.com>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sony.com>
Cc: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/vmalloc.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/mm/vmalloc.c~mm-vmalloc-offload-free_vmap_area_lock-lock-fix
+++ a/mm/vmalloc.c
@@ -1834,13 +1834,13 @@ static struct vmap_area *alloc_vmap_area
 		va = kmem_cache_alloc_node(vmap_area_cachep, gfp_mask, node);
 		if (unlikely(!va))
 			return ERR_PTR(-ENOMEM);
-	}
 
-	/*
-	 * Only scan the relevant parts containing pointers to other objects
-	 * to avoid false negatives.
-	 */
-	kmemleak_scan_area(&va->rb_node, SIZE_MAX, gfp_mask);
+		/*
+		 * Only scan the relevant parts containing pointers to other objects
+		 * to avoid false negatives.
+		 */
+		kmemleak_scan_area(&va->rb_node, SIZE_MAX, gfp_mask);
+	}
 
 retry:
 	if (addr == vend) {
_

Patches currently in -mm which might be from urezki@gmail.com are