[merged mm-stable] iomap-simplify-writepages-reclaim-guard.patch removed from -mm tree

[merged mm-stable] iomap-simplify-writepages-reclaim-guard.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: iomap: simplify writepages reclaim guard
has been removed from the -mm tree.  Its filename was
     iomap-simplify-writepages-reclaim-guard.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: Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: iomap: simplify writepages reclaim guard
Date: Wed, 2 Sep 2026 21:16:51 +0800

Now that kswapd can no longer reach filesystem writeback (pageout()
returns PAGE_ACTIVATE for non-shmem, non-anon folios), any PF_MEMALLOC
context in iomap_writepages() indicates a VM regression, simplify the
check by removing PF_KSWAPD.

Link: https://lore.kernel.org/20260902131653.1338227-3-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Brendan Jackman <brendan.jackman@linux.dev>
Cc: Carlos Maiolino <cem@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "Darrick J. Wong" <djwong@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
---

 fs/iomap/buffered-io.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/fs/iomap/buffered-io.c~iomap-simplify-writepages-reclaim-guard
+++ a/fs/iomap/buffered-io.c
@@ -2077,8 +2077,7 @@ iomap_writepages(struct iomap_writepage_
 	 * Writeback from reclaim context should never happen except in the case
 	 * of a VM regression so warn about it and refuse to write the data.
 	 */
-	if (WARN_ON_ONCE((current->flags & (PF_MEMALLOC | PF_KSWAPD)) ==
-			PF_MEMALLOC))
+	if (WARN_ON_ONCE((current->flags & PF_MEMALLOC)))
 		return -EIO;
 
 	while ((folio = writeback_iter(mapping, wpc->wbc, folio, &error))) {
_

Patches currently in -mm which might be from wangkefeng.wang@huawei.com are

mm-zswap-convert-zswap_invalidate-to-take-a-range.patch
mm-zswap-skip-xarray-walk-in-zswap_invalidate-when-zswap-is-unused.patch
mm-zswap-reuse-zswap_invalidate-in-zswap_store.patch
mm-mincore-use-per-vma-lock-during-page-table-walk.patch