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| author | Ming Lei <ming.lei@redhat.com> | 2020-05-03 03:54:22 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-05-13 04:32:42 +0200 |
| commit | e6249cdd46e43a7d3bdb8cce5fe24565d6c11e94 (patch) | |
| tree | eb64d5b35a2d76e84afdcea844f39b2709db398c /fs/block_dev.c | |
| parent | block: don't hold part0's refcount in IO path (diff) | |
| download | linux-e6249cdd46e43a7d3bdb8cce5fe24565d6c11e94.tar.xz linux-e6249cdd46e43a7d3bdb8cce5fe24565d6c11e94.zip | |
block: add blk_io_schedule() for avoiding task hung in sync dio
Sync dio could be big, or may take long time in discard or in case of
IO failure.
We have prevented task hung in submit_bio_wait() and blk_execute_rq(),
so apply the same trick for prevent task hung from happening in sync dio.
Add helper of blk_io_schedule() and use io_schedule_timeout() to prevent
task hung warning.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Cc: Salman Qazi <sqazi@google.com>
Cc: Jesse Barnes <jsbarnes@google.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 7cbb7b79935e..ebd1507789d2 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -255,7 +255,7 @@ __blkdev_direct_IO_simple(struct kiocb *iocb, struct iov_iter *iter, break; if (!(iocb->ki_flags & IOCB_HIPRI) || !blk_poll(bdev_get_queue(bdev), qc, true)) - io_schedule(); + blk_io_schedule(); } __set_current_state(TASK_RUNNING); @@ -449,7 +449,7 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages) if (!(iocb->ki_flags & IOCB_HIPRI) || !blk_poll(bdev_get_queue(bdev), qc, true)) - io_schedule(); + blk_io_schedule(); } __set_current_state(TASK_RUNNING); |