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| author | James Bottomley <James.Bottomley@suse.de> | 2010-07-01 19:49:17 +0900 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2010-08-07 18:23:47 +0200 |
| commit | 28018c242a4ec7017bbbf81d2d3952f820a27118 (patch) | |
| tree | 03732bef20d0e4dad30d81d9b9ad9ffcf5a2e41c /block/blk-settings.c | |
| parent | e597cd09f711b28b8466ebdc2f12e55b44fa81e4 (diff) | |
block: implement an unprep function corresponding directly to prep
Reviewed-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/blk-settings.c')
| -rw-r--r-- | block/blk-settings.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c index f5ed5a1187b..a234f4bf1d6 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -37,6 +37,23 @@ void blk_queue_prep_rq(struct request_queue *q, prep_rq_fn *pfn) EXPORT_SYMBOL(blk_queue_prep_rq); /** + * blk_queue_unprep_rq - set an unprepare_request function for queue + * @q: queue + * @ufn: unprepare_request function + * + * It's possible for a queue to register an unprepare_request callback + * which is invoked before the request is finally completed. The goal + * of the function is to deallocate any data that was allocated in the + * prepare_request callback. + * + */ +void blk_queue_unprep_rq(struct request_queue *q, unprep_rq_fn *ufn) +{ + q->unprep_rq_fn = ufn; +} +EXPORT_SYMBOL(blk_queue_unprep_rq); + +/** * blk_queue_merge_bvec - set a merge_bvec function for queue * @q: queue * @mbfn: merge_bvec_fn |