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io_uring: don't unconditionally set plug->nowait = true

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This causes all the bios to be submitted with REQ_NOWAIT, which can be
problematic on either btrfs or on file systems that otherwise use a mix
of block devices where only some of them support it.

For now, just remove the setting of plug->nowait = true.

Reported-by: Dan Melnic <dmm@fb.com>
Reported-by: Brian Foster <bfoster@redhat.com>
Fixes: b63534c41e ("io_uring: re-issue block requests that failed because of resources")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2020-09-25 09:01:53 -06:00
parent f3cd485050
commit 62c774ed48
1 changed files with 0 additions and 3 deletions
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3
fs/io_uring.c
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@ -6353,9 +6353,6 @@ static void io_submit_state_start(struct io_submit_state *state,
struct io_ring_ctx *ctx, unsigned int max_ios)
{
blk_start_plug(&state->plug);
#ifdef CONFIG_BLOCK
state->plug.nowait = true;
#endif
state->comp.nr = 0;
INIT_LIST_HEAD(&state->comp.list);
state->comp.ctx = ctx;