| Message ID | 20210811193533.766613-5-axboe@kernel.dk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Enable bio recycling for polled IO | expand |
diff --git a/block/blk-core.c b/block/blk-core.c index 04477697ee4b..c130206e9961 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -833,8 +833,11 @@ static noinline_for_stack bool submit_bio_checks(struct bio *bio) } } - if (!test_bit(QUEUE_FLAG_POLL, &q->queue_flags)) + if (!test_bit(QUEUE_FLAG_POLL, &q->queue_flags)) { + /* can't support alloc cache if we turn off polling */ + bio_clear_flag(bio, BIO_PERCPU_CACHE); bio->bi_opf &= ~REQ_HIPRI; + } switch (bio_op(bio)) { case REQ_OP_DISCARD:
The bio alloc cache relies on the fact that a polled bio will complete in process context, clear the cacheable flag if we disable polling for a given bio. Signed-off-by: Jens Axboe <axboe@kernel.dk> --- block/blk-core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)