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| author | Hugh Dickins <hughd@google.com> | 2023-10-24 08:26:08 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-10-26 01:47:14 +0200 |
| commit | 1cbf0a58847b30507611f92ad69964ef37264d14 (patch) | |
| tree | 5e986d8b0db1f8be93c86df01f5b82e4224c26fe /fs/ext4 | |
| parent | mm: migrate: record the mlocked page status to remove unnecessary lru drain (diff) | |
| download | linux-1cbf0a58847b30507611f92ad69964ef37264d14.tar.xz linux-1cbf0a58847b30507611f92ad69964ef37264d14.zip | |
ext4: add __GFP_NOWARN to GFP_NOWAIT in readahead
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@google.com
Fixes: e509ad4d77e6 ("ext4: use bdev_getblk() to avoid memory reclaim in readahead path")
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Hui Zhu <teawater@antgroup.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'fs/ext4')
| -rw-r--r-- | fs/ext4/super.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index c00ec159dea5..56a08fc5c5d5 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -262,7 +262,7 @@ struct buffer_head *ext4_sb_bread_unmovable(struct super_block *sb, 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)) |