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authorMing Lei <ming.lei@redhat.com>2020-06-30 18:24:59 +0800
committerJens Axboe <axboe@kernel.dk>2020-06-30 07:51:48 -0600
commitbbdb3c5d94d079ab4c6eaf9ac0d4f6813f1c0327 (patch)
tree5745a489d25615bff9665dc6253d3d44be7ce5da /block
parent7538352453189abf3a96461e187b1085b0ae0c6c (diff)
blk-mq: remove dead check from blk_mq_dispatch_rq_list
When BLK_STS_RESOURCE or BLK_STS_DEV_RESOURCE is returned from .queue_rq, the 'list' variable always holds this rq which isn't queued to LLD successfully. So blk_mq_dispatch_rq_list() always returns false from the branch of '!list_empty(list)'. No functional change. Signed-off-by: Ming Lei <ming.lei@redhat.com> Tested-by: Baolin Wang <baolin.wang7@gmail.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Christoph Hellwig <hch@infradead.org> Cc: Sagi Grimberg <sagi@grimberg.me> Cc: Baolin Wang <baolin.wang7@gmail.com> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
-rw-r--r--block/blk-mq.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 3e370f5bc40a..a80cb6ecc9d9 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1426,13 +1426,6 @@ bool blk_mq_dispatch_rq_list(struct blk_mq_hw_ctx *hctx, struct list_head *list,
} else
blk_mq_update_dispatch_busy(hctx, false);
- /*
- * If the host/device is unable to accept more work, inform the
- * caller of that.
- */
- if (ret == BLK_STS_RESOURCE || ret == BLK_STS_DEV_RESOURCE)
- return false;
-
return (queued + errors) != 0;
}