The quilt patch titled
Subject: ext4: add __GFP_NOWARN to GFP_NOWAIT in readahead
has been removed from the -mm tree. Its filename was
ext4-add-__gfp_nowarn-to-gfp_nowait-in-readahead.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: Hugh Dickins <hughd@xxxxxxxxxx>
Subject: ext4: add __GFP_NOWARN to GFP_NOWAIT in readahead
Date: Mon, 23 Oct 2023 23:26:08 -0700 (PDT)
Since commit e509ad4d77e6 ("ext4: use bdev_getblk() to avoid memory
reclaim in readahead path") rightly replaced GFP_NOFAIL allocations by
GFP_NOWAIT allocations, I've occasionally been seeing "page allocation
failure: order:0" warnings under load: all with
ext4_sb_breadahead_unmovable() in the stack. I don't think those warnings
are of any interest: suppress them with __GFP_NOWARN.
Link: https://lkml.kernel.org/r/7bc6ad16-9a4d-dd90-202e-47d6cbb5a136@xxxxxxxxxx
Fixes: e509ad4d77e6 ("ext4: use bdev_getblk() to avoid memory reclaim in readahead path")
Signed-off-by: Hugh Dickins <hughd@xxxxxxxxxx>
Reviewed-by: Jan Kara <jack@xxxxxxx>
Cc: Hui Zhu <teawater@xxxxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ext4/super.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/fs/ext4/super.c~ext4-add-__gfp_nowarn-to-gfp_nowait-in-readahead
+++ a/fs/ext4/super.c
@@ -262,7 +262,7 @@ struct buffer_head *ext4_sb_bread_unmova
void ext4_sb_breadahead_unmovable(struct super_block *sb, sector_t block)
{
struct buffer_head *bh = bdev_getblk(sb->s_bdev, block,
- sb->s_blocksize, GFP_NOWAIT);
+ sb->s_blocksize, GFP_NOWAIT | __GFP_NOWARN);
if (likely(bh)) {
if (trylock_buffer(bh))
_
Patches currently in -mm which might be from hughd@xxxxxxxxxx are
