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authorJens Axboe <axboe@fb.com>2016-11-11 12:24:46 -0700
committerJens Axboe <axboe@fb.com>2016-11-11 12:24:46 -0700
commit066a4a73cee9a44a906b98825e70c47de5bd8b5c (patch)
tree046df5fb6e86118cb69dbb7207f2877ae9916080 /block/blk-wbt.h
parent87760e5eef359788047d6fd54fc12eec74ce0d27 (diff)
downloadlinux-0-day-066a4a73cee9a44a906b98825e70c47de5bd8b5c.tar.gz
linux-0-day-066a4a73cee9a44a906b98825e70c47de5bd8b5c.tar.xz
blk-mq: blk_mq_try_issue_directly() should lookup hardware queue
A previous commit changed this to pass in the hardware queue, but it was using the wrong hardware queue. Hence a request that was allocated on one hardware queue ended up being issued on another one, and that caused IO timeouts and oopses on some drivers. Since the request holds hardware queue private resources, like a tag, we can't just issue it on a different hardware queue. Fixes: 2253efc850c4 ("blk-mq: Move more code into blk_mq_direct_issue_request()") Signed-off-by: Jens Axboe <axboe@fb.com>
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