[merged mm-stable] mm-oom_kill-remove-unreachable-__gfp_thisnode-check-in-constrained_alloc.patch removed from -mm tree

[merged mm-stable] mm-oom_kill-remove-unreachable-__gfp_thisnode-check-in-constrained_alloc.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/oom_kill: remove unreachable __GFP_THISNODE check in constrained_alloc()
has been removed from the -mm tree.  Its filename was
     mm-oom_kill-remove-unreachable-__gfp_thisnode-check-in-constrained_alloc.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: Ye Liu <liuye@kylinos.cn>
Subject: mm/oom_kill: remove unreachable __GFP_THISNODE check in constrained_alloc()
Date: Thu, 13 Aug 2026 17:38:09 +0800

The __GFP_THISNODE check in constrained_alloc() is dead code: global OOM
is never triggered with __GFP_THISNODE (blocked in __alloc_pages_may_oom
before out_of_memory() is called), and memcg OOM returns CONSTRAINT_MEMCG
at the top of the function before reaching this point.  Remove the check,
its stale comment, and update the following comment that referenced
__GFP_THISNODE.

Link: https://lore.kernel.org/20260813093810.573302-1-ye.liu@linux.dev
Signed-off-by: Ye Liu <liuye@kylinos.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Cc: David Rientjes <rientjes@google.com>
---

 mm/oom_kill.c |   13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

--- a/mm/oom_kill.c~mm-oom_kill-remove-unreachable-__gfp_thisnode-check-in-constrained_alloc
+++ a/mm/oom_kill.c
@@ -267,18 +267,11 @@ static enum oom_constraint constrained_a
 
 	if (!oc->zonelist)
 		return CONSTRAINT_NONE;
-	/*
-	 * Reach here only when __GFP_NOFAIL is used. So, we should avoid
-	 * to kill current.We have to random task kill in this case.
-	 * Hopefully, CONSTRAINT_THISNODE...but no way to handle it, now.
-	 */
-	if (oc->gfp_mask & __GFP_THISNODE)
-		return CONSTRAINT_NONE;
 
 	/*
-	 * This is not a __GFP_THISNODE allocation, so a truncated nodemask in
-	 * the page allocator means a mempolicy is in effect.  Cpuset policy
-	 * is enforced in get_page_from_freelist().
+	 * A truncated nodemask in the page allocator means a mempolicy
+	 * is in effect.  Cpuset policy is enforced in
+	 * get_page_from_freelist().
 	 */
 	if (oc->nodemask &&
 	    !nodes_subset(node_states[N_MEMORY], *oc->nodemask)) {
_

Patches currently in -mm which might be from liuye@kylinos.cn are

mm-vmalloc-group-xa_init-with-vbq-field-initializations.patch
mm-vmalloc-extract-vmap_insert_free_area-helper.patch
mm-vmalloc-extract-show_busy_info-from-vmalloc_info_show.patch
mm-vmalloc-fix-vmalloc_dump_obj-address-alignment-for-last-page-lookups.patch
mm-vmalloc-fix-vmalloc_dump_obj-cross-zone-va-lookup.patch