block: don't ignore REQ_NOWAIT for direct IO

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[ Upstream commit f8b78caf21 ]

If IOCB_NOWAIT is set on submission, then that needs to get propagated to
REQ_NOWAIT on the block side. Otherwise we completely lose this
information, and any issuer of IOCB_NOWAIT IO will potentially end up
blocking on eg request allocation on the storage side.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Pavel Begunkov 2020-11-20 17:10:28 +00:00 • committed by Greg Kroah-Hartman

parent efa7b6e401

commit 5402a67ac4

1 changed files with 4 additions and 0 deletions

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fs/block_dev.c

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