diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-29 08:51:56 +1100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-29 08:51:56 +1100 |
| commit | 8d01eddf292dcd78b640418c80fb300532799cd4 (patch) | |
| tree | dd7f816423463e5ad10f15af22fdbd5b75cc6184 /include/linux/blkdev.h | |
| parent | f0f0052069989b80d2a3e50c9cd2f2a650bc1aea (diff) | |
| parent | fa0ccd837e3dddb44c7db2f128a8bb7e4eabc21a (diff) | |
Merge branch 'for-2.6.25' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.25' of git://git.kernel.dk/linux-2.6-block:
block: implement drain buffers
__bio_clone: don't calculate hw/phys segment counts
block: allow queue dma_alignment of zero
blktrace: Add blktrace ioctls to SCSI generic devices
Diffstat (limited to 'include/linux/blkdev.h')
| -rw-r--r-- | include/linux/blkdev.h | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index b71c3900810..71e7a847dff 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -356,6 +356,8 @@ struct request_queue unsigned int max_segment_size; unsigned long seg_boundary_mask; + void *dma_drain_buffer; + unsigned int dma_drain_size; unsigned int dma_alignment; struct blk_queue_tag *queue_tags; @@ -692,6 +694,8 @@ extern void blk_queue_max_hw_segments(struct request_queue *, unsigned short); extern void blk_queue_max_segment_size(struct request_queue *, unsigned int); extern void blk_queue_hardsect_size(struct request_queue *, unsigned short); extern void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b); +extern int blk_queue_dma_drain(struct request_queue *q, void *buf, + unsigned int size); extern void blk_queue_segment_boundary(struct request_queue *, unsigned long); extern void blk_queue_prep_rq(struct request_queue *, prep_rq_fn *pfn); extern void blk_queue_merge_bvec(struct request_queue *, merge_bvec_fn *); @@ -768,12 +772,7 @@ static inline int bdev_hardsect_size(struct block_device *bdev) static inline int queue_dma_alignment(struct request_queue *q) { - int retval = 511; - - if (q && q->dma_alignment) - retval = q->dma_alignment; - - return retval; + return q ? q->dma_alignment : 511; } /* assumes size > 256 */ |