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| author | Christoph Hellwig <hch@lst.de> | 2018-12-13 16:17:10 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-12-18 23:39:26 -0500 |
| commit | 38417468d4f05cfed62fca8f407d2df0cbe3fcc8 (patch) | |
| tree | 91fac5bb8a574303159a5803cdf355c0f360fb29 /block/blk-merge.c | |
| parent | d6a9000b81befd436fe4bcdae76322928bda724c (diff) | |
| download | linux-38417468d4f05cfed62fca8f407d2df0cbe3fcc8.tar.gz linux-38417468d4f05cfed62fca8f407d2df0cbe3fcc8.tar.bz2 linux-38417468d4f05cfed62fca8f407d2df0cbe3fcc8.zip | |
scsi: block: remove the cluster flag
Now that the the SCSI layer replaced the use of the cluster flag with
segment size limits and the DMA boundary we can remove the cluster flag
from the block layer.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'block/blk-merge.c')
| -rw-r--r-- | block/blk-merge.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c index 6b5ad275ed56..4478d53cc6ee 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -194,7 +194,7 @@ static struct bio *blk_bio_segment_split(struct request_queue *q, goto split; } - if (bvprvp && blk_queue_cluster(q)) { + if (bvprvp) { if (seg_size + bv.bv_len > queue_max_segment_size(q)) goto new_segment; if (!biovec_phys_mergeable(q, bvprvp, &bv)) @@ -294,7 +294,7 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q, bool no_sg_merge) { struct bio_vec bv, bvprv = { NULL }; - int cluster, prev = 0; + int prev = 0; unsigned int seg_size, nr_phys_segs; struct bio *fbio, *bbio; struct bvec_iter iter; @@ -312,7 +312,6 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q, } fbio = bio; - cluster = blk_queue_cluster(q); seg_size = 0; nr_phys_segs = 0; for_each_bio(bio) { @@ -324,7 +323,7 @@ static unsigned int __blk_recalc_rq_segments(struct request_queue *q, if (no_sg_merge) goto new_segment; - if (prev && cluster) { + if (prev) { if (seg_size + bv.bv_len > queue_max_segment_size(q)) goto new_segment; @@ -395,9 +394,6 @@ static int blk_phys_contig_segment(struct request_queue *q, struct bio *bio, { struct bio_vec end_bv = { NULL }, nxt_bv; - if (!blk_queue_cluster(q)) - return 0; - if (bio->bi_seg_back_size + nxt->bi_seg_front_size > queue_max_segment_size(q)) return 0; @@ -414,12 +410,12 @@ static int blk_phys_contig_segment(struct request_queue *q, struct bio *bio, static inline void __blk_segment_map_sg(struct request_queue *q, struct bio_vec *bvec, struct scatterlist *sglist, struct bio_vec *bvprv, - struct scatterlist **sg, int *nsegs, int *cluster) + struct scatterlist **sg, int *nsegs) { int nbytes = bvec->bv_len; - if (*sg && *cluster) { + if (*sg) { if ((*sg)->length + nbytes > queue_max_segment_size(q)) goto new_segment; if (!biovec_phys_mergeable(q, bvprv, bvec)) @@ -465,12 +461,12 @@ static int __blk_bios_map_sg(struct request_queue *q, struct bio *bio, { struct bio_vec bvec, bvprv = { NULL }; struct bvec_iter iter; - int cluster = blk_queue_cluster(q), nsegs = 0; + int nsegs = 0; for_each_bio(bio) bio_for_each_segment(bvec, bio, iter) __blk_segment_map_sg(q, &bvec, sglist, &bvprv, sg, - &nsegs, &cluster); + &nsegs); return nsegs; } |