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| author | Damien Le Moal <damien.lemoal@hgst.com> | 2016-07-20 21:40:47 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-07-20 21:40:47 -0600 |
| commit | 17007f3994cdb4643355c73f54f0adad006cf59e (patch) | |
| tree | ac5aab0bf6211f1dc878872db5ec73f9b99bda5b /include | |
| parent | 72ef799b3f14f4cb4c56ba3af6e6bdcbae6df368 (diff) | |
| download | linux-17007f3994cdb4643355c73f54f0adad006cf59e.tar.bz2 | |
block: Fix front merge check
For a front merge, the maximum number of sectors of the
request must be checked against the front merge BIO sector,
not the current sector of the request.
Signed-off-by: Damien Le Moal <damien.lemoal@hgst.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/blkdev.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 9d84c98b5c79..48f05d768a53 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -922,7 +922,8 @@ static inline unsigned int blk_max_size_offset(struct request_queue *q, (offset & (q->limits.chunk_sectors - 1)); } -static inline unsigned int blk_rq_get_max_sectors(struct request *rq) +static inline unsigned int blk_rq_get_max_sectors(struct request *rq, + sector_t offset) { struct request_queue *q = rq->q; @@ -932,7 +933,7 @@ static inline unsigned int blk_rq_get_max_sectors(struct request *rq) if (!q->limits.chunk_sectors || (req_op(rq) == REQ_OP_DISCARD)) return blk_queue_get_max_sectors(q, req_op(rq)); - return min(blk_max_size_offset(q, blk_rq_pos(rq)), + return min(blk_max_size_offset(q, offset), blk_queue_get_max_sectors(q, req_op(rq))); } |