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authorJens Axboe <axboe@kernel.dk>2021-08-11 19:19:06 +0300
committerJens Axboe <axboe@kernel.dk>2021-08-23 22:44:51 +0300
commitbe863b9e4348a791e360d25611a1bdde2c9595ed (patch)
tree3765fb0cd03d4229fca996ddf3e97bea70ac8156 /block
parentbe4d234d7aebbfe0c233bc20b9cdef7ab3408ff4 (diff)
downloadlinux-be863b9e4348a791e360d25611a1bdde2c9595ed.tar.xz
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.c5
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: