ext4: add __GFP_NOWARN to GFP_NOWAIT in readahead

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Since commit e509ad4d77 ("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: e509ad4d77 ("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>

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Hugh Dickins 2023-10-23 23:26:08 -07:00 • committed by Andrew Morton

parent eebb3dabbb

commit 1cbf0a5884

1 changed files with 1 additions and 1 deletions

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fs/ext4/super.c

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