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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-11 15:17:41 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-11 15:17:41 -0700 |
commit | 1f7563f743d7081710a9d186a8b203997d09f383 (patch) | |
tree | 55091227fb177f25c45f33dfb5f0b2a5e22ccfa7 /drivers/nvme/host | |
parent | ba6d10ab8014ac10d25ca513352b6665e73b5785 (diff) | |
parent | 3e99b3b13a1fc8f7354edaee4c04f73a07faba69 (diff) | |
download | linux-1f7563f743d7081710a9d186a8b203997d09f383.tar.bz2 |
Merge tag 'scsi-sg' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI scatter-gather list updates from James Bottomley:
"This topic branch covers a fundamental change in how our sg lists are
allocated to make mq more efficient by reducing the size of the
preallocated sg list.
This necessitates a large number of driver changes because the
previous guarantee that if a driver specified SG_ALL as the size of
its scatter list, it would get a non-chained list and didn't need to
bother with scatterlist iterators is now broken and every driver
*must* use scatterlist iterators.
This was broken out as a separate topic because we need to convert all
the drivers before pulling the trigger and unconverted drivers kept
being found, necessitating a rebase"
* tag 'scsi-sg' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (21 commits)
scsi: core: don't preallocate small SGL in case of NO_SG_CHAIN
scsi: lib/sg_pool.c: clear 'first_chunk' in case of no preallocation
scsi: core: avoid preallocating big SGL for data
scsi: core: avoid preallocating big SGL for protection information
scsi: lib/sg_pool.c: improve APIs for allocating sg pool
scsi: esp: use sg helper to iterate over scatterlist
scsi: NCR5380: use sg helper to iterate over scatterlist
scsi: wd33c93: use sg helper to iterate over scatterlist
scsi: ppa: use sg helper to iterate over scatterlist
scsi: pcmcia: nsp_cs: use sg helper to iterate over scatterlist
scsi: imm: use sg helper to iterate over scatterlist
scsi: aha152x: use sg helper to iterate over scatterlist
scsi: s390: zfcp_fc: use sg helper to iterate over scatterlist
scsi: staging: unisys: visorhba: use sg helper to iterate over scatterlist
scsi: usb: image: microtek: use sg helper to iterate over scatterlist
scsi: pmcraid: use sg helper to iterate over scatterlist
scsi: ipr: use sg helper to iterate over scatterlist
scsi: mvumi: use sg helper to iterate over scatterlist
scsi: lpfc: use sg helper to iterate over scatterlist
scsi: advansys: use sg helper to iterate over scatterlist
...
Diffstat (limited to 'drivers/nvme/host')
-rw-r--r-- | drivers/nvme/host/fc.c | 7 | ||||
-rw-r--r-- | drivers/nvme/host/rdma.c | 7 |
2 files changed, 8 insertions, 6 deletions
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 9b497d785ed7..dcb2b799966f 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -2112,7 +2112,8 @@ nvme_fc_map_data(struct nvme_fc_ctrl *ctrl, struct request *rq, freq->sg_table.sgl = freq->first_sgl; ret = sg_alloc_table_chained(&freq->sg_table, - blk_rq_nr_phys_segments(rq), freq->sg_table.sgl); + blk_rq_nr_phys_segments(rq), freq->sg_table.sgl, + SG_CHUNK_SIZE); if (ret) return -ENOMEM; @@ -2122,7 +2123,7 @@ nvme_fc_map_data(struct nvme_fc_ctrl *ctrl, struct request *rq, freq->sg_cnt = fc_dma_map_sg(ctrl->lport->dev, freq->sg_table.sgl, op->nents, dir); if (unlikely(freq->sg_cnt <= 0)) { - sg_free_table_chained(&freq->sg_table, true); + sg_free_table_chained(&freq->sg_table, SG_CHUNK_SIZE); freq->sg_cnt = 0; return -EFAULT; } @@ -2148,7 +2149,7 @@ nvme_fc_unmap_data(struct nvme_fc_ctrl *ctrl, struct request *rq, nvme_cleanup_cmd(rq); - sg_free_table_chained(&freq->sg_table, true); + sg_free_table_chained(&freq->sg_table, SG_CHUNK_SIZE); freq->sg_cnt = 0; } diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index 97f668a39ae1..676619c1454a 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -1144,7 +1144,7 @@ static void nvme_rdma_unmap_data(struct nvme_rdma_queue *queue, WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE); nvme_cleanup_cmd(rq); - sg_free_table_chained(&req->sg_table, true); + sg_free_table_chained(&req->sg_table, SG_CHUNK_SIZE); } static int nvme_rdma_set_sg_null(struct nvme_command *c) @@ -1259,7 +1259,8 @@ static int nvme_rdma_map_data(struct nvme_rdma_queue *queue, req->sg_table.sgl = req->first_sgl; ret = sg_alloc_table_chained(&req->sg_table, - blk_rq_nr_phys_segments(rq), req->sg_table.sgl); + blk_rq_nr_phys_segments(rq), req->sg_table.sgl, + SG_CHUNK_SIZE); if (ret) return -ENOMEM; @@ -1299,7 +1300,7 @@ out_unmap_sg: req->nents, rq_data_dir(rq) == WRITE ? DMA_TO_DEVICE : DMA_FROM_DEVICE); out_free_table: - sg_free_table_chained(&req->sg_table, true); + sg_free_table_chained(&req->sg_table, SG_CHUNK_SIZE); return ret; } |