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| author | Christoph Hellwig <hch@lst.de> | 2014-04-16 09:44:52 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-04-16 14:15:25 -0600 |
| commit | 63151a449ebaef062ffac5b302206565ff5ef62e (patch) | |
| tree | d53d4090b1d92761b04baf47e0efb6ca5c860263 /block/blk-mq.c | |
| parent | 6700a678c02e47b6d50c51da2a46ff80efedb8c7 (diff) | |
| download | lwn-63151a449ebaef062ffac5b302206565ff5ef62e.tar.gz lwn-63151a449ebaef062ffac5b302206565ff5ef62e.zip | |
blk-mq: allow drivers to hook into I/O completion
Split out the bottom half of blk_mq_end_io so that drivers can perform
work when they know a request has been completed, but before it has been
freed. This also obsoletes blk_mq_end_io_partial as drivers can now
pass any value to blk_update_request directly.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index b59a8d027dff..86d66e0e900c 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -294,20 +294,24 @@ void blk_mq_clone_flush_request(struct request *flush_rq, hctx->cmd_size); } -bool blk_mq_end_io_partial(struct request *rq, int error, unsigned int nr_bytes) +inline void __blk_mq_end_io(struct request *rq, int error) { - if (blk_update_request(rq, error, blk_rq_bytes(rq))) - return true; - blk_account_io_done(rq); if (rq->end_io) rq->end_io(rq, error); else blk_mq_free_request(rq); - return false; } -EXPORT_SYMBOL(blk_mq_end_io_partial); +EXPORT_SYMBOL(__blk_mq_end_io); + +void blk_mq_end_io(struct request *rq, int error) +{ + if (blk_update_request(rq, error, blk_rq_bytes(rq))) + BUG(); + __blk_mq_end_io(rq, error); +} +EXPORT_SYMBOL(blk_mq_end_io); static void __blk_mq_complete_request_remote(void *data) { |