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| author | Roman Penyaev <rpenyaev@suse.de> | 2019-12-17 16:54:07 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-12 12:21:37 +0100 |
| commit | 2ac95310fe5896cae413e4ae06b3af21645979d9 (patch) | |
| tree | 0dcce3e22f611b8ad6e6f6a3ef6baa97706a9de1 /fs/inode.c | |
| parent | e36491f117d1b5a439e1c347bded57844650dab5 (diff) | |
block: end bio with BLK_STS_AGAIN in case of non-mq devs and REQ_NOWAIT
[ Upstream commit c58c1f83436b501d45d4050fd1296d71a9760bcb ]
Non-mq devs do not honor REQ_NOWAIT so give a chance to the caller to repeat
request gracefully on -EAGAIN error.
The problem is well reproduced using io_uring:
mkfs.ext4 /dev/ram0
mount /dev/ram0 /mnt
# Preallocate a file
dd if=/dev/zero of=/mnt/file bs=1M count=1
# Start fio with io_uring and get -EIO
fio --rw=write --ioengine=io_uring --size=1M --direct=1 --name=job --filename=/mnt/file
Signed-off-by: Roman Penyaev <rpenyaev@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs/inode.c')
0 files changed, 0 insertions, 0 deletions