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| author |   Jens Axboe <axboe@kernel.dk> | 2021-08-11 10:19:06 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-08-23 13:44:51 -0600 |
| commit | be863b9e4348a791e360d25611a1bdde2c9595ed (patch) | |
| tree | 3765fb0cd03d4229fca996ddf3e97bea70ac8156 /block | |
| parent | bio: add allocation cache abstraction (diff) | |
| download | wireguard-linux-be863b9e4348a791e360d25611a1bdde2c9595ed.tar.xz wireguard-linux-be863b9e4348a791e360d25611a1bdde2c9595ed.zip | |
block: clear BIO_PERCPU_CACHE flag if polling isn't supported
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.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 4f8449b29b21..0d4d6b1e5d25 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -832,8 +832,11 @@ 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: |