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author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-25 05:37:53 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-25 05:37:53 +0300 |
commit | 6f2689a7662809ff39f2b24e452d11569c21ea2f (patch) | |
tree | 6dfbfd3feb4d77a66bf06f246640ae4ed321bbb2 /block/blk-lib.c | |
parent | b1f8ccdaae0310332d16f65bf0f622f9d4ae2391 (diff) | |
parent | 66daf3e6b9936328cb28eaaa29dddfe96343cc85 (diff) | |
download | linux-6f2689a7662809ff39f2b24e452d11569c21ea2f.tar.xz |
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This series consists of the usual driver updates (qla2xxx, pm8001,
libsas, smartpqi, scsi_debug, lpfc, iscsi, mpi3mr) plus minor updates
and bug fixes.
The high blast radius core update is the removal of write same, which
affects block and several non-SCSI devices. The other big change,
which is more local, is the removal of the SCSI pointer"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (281 commits)
scsi: scsi_ioctl: Drop needless assignment in sg_io()
scsi: bsg: Drop needless assignment in scsi_bsg_sg_io_fn()
scsi: lpfc: Copyright updates for 14.2.0.0 patches
scsi: lpfc: Update lpfc version to 14.2.0.0
scsi: lpfc: SLI path split: Refactor BSG paths
scsi: lpfc: SLI path split: Refactor Abort paths
scsi: lpfc: SLI path split: Refactor SCSI paths
scsi: lpfc: SLI path split: Refactor CT paths
scsi: lpfc: SLI path split: Refactor misc ELS paths
scsi: lpfc: SLI path split: Refactor VMID paths
scsi: lpfc: SLI path split: Refactor FDISC paths
scsi: lpfc: SLI path split: Refactor LS_RJT paths
scsi: lpfc: SLI path split: Refactor LS_ACC paths
scsi: lpfc: SLI path split: Refactor the RSCN/SCR/RDF/EDC/FARPR paths
scsi: lpfc: SLI path split: Refactor PLOGI/PRLI/ADISC/LOGO paths
scsi: lpfc: SLI path split: Refactor base ELS paths and the FLOGI path
scsi: lpfc: SLI path split: Introduce lpfc_prep_wqe
scsi: lpfc: SLI path split: Refactor fast and slow paths to native SLI4
scsi: lpfc: SLI path split: Refactor lpfc_iocbq
scsi: lpfc: Use kcalloc()
...
Diffstat (limited to 'block/blk-lib.c')
-rw-r--r-- | block/blk-lib.c | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/block/blk-lib.c b/block/blk-lib.c index fc6ea52e7482..237d60d8b585 100644 --- a/block/blk-lib.c +++ b/block/blk-lib.c @@ -132,94 +132,6 @@ int blkdev_issue_discard(struct block_device *bdev, sector_t sector, } EXPORT_SYMBOL(blkdev_issue_discard); -/** - * __blkdev_issue_write_same - generate number of bios with same page - * @bdev: target blockdev - * @sector: start sector - * @nr_sects: number of sectors to write - * @gfp_mask: memory allocation flags (for bio_alloc) - * @page: page containing data to write - * @biop: pointer to anchor bio - * - * Description: - * Generate and issue number of bios(REQ_OP_WRITE_SAME) with same page. - */ -static int __blkdev_issue_write_same(struct block_device *bdev, sector_t sector, - sector_t nr_sects, gfp_t gfp_mask, struct page *page, - struct bio **biop) -{ - struct request_queue *q = bdev_get_queue(bdev); - unsigned int max_write_same_sectors; - struct bio *bio = *biop; - sector_t bs_mask; - - if (bdev_read_only(bdev)) - return -EPERM; - - bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1; - if ((sector | nr_sects) & bs_mask) - return -EINVAL; - - if (!bdev_write_same(bdev)) - return -EOPNOTSUPP; - - /* Ensure that max_write_same_sectors doesn't overflow bi_size */ - max_write_same_sectors = bio_allowed_max_sectors(q); - - while (nr_sects) { - bio = blk_next_bio(bio, bdev, 1, REQ_OP_WRITE_SAME, gfp_mask); - bio->bi_iter.bi_sector = sector; - bio->bi_vcnt = 1; - bio->bi_io_vec->bv_page = page; - bio->bi_io_vec->bv_offset = 0; - bio->bi_io_vec->bv_len = bdev_logical_block_size(bdev); - - if (nr_sects > max_write_same_sectors) { - bio->bi_iter.bi_size = max_write_same_sectors << 9; - nr_sects -= max_write_same_sectors; - sector += max_write_same_sectors; - } else { - bio->bi_iter.bi_size = nr_sects << 9; - nr_sects = 0; - } - cond_resched(); - } - - *biop = bio; - return 0; -} - -/** - * blkdev_issue_write_same - queue a write same operation - * @bdev: target blockdev - * @sector: start sector - * @nr_sects: number of sectors to write - * @gfp_mask: memory allocation flags (for bio_alloc) - * @page: page containing data - * - * Description: - * Issue a write same request for the sectors in question. - */ -int blkdev_issue_write_same(struct block_device *bdev, sector_t sector, - sector_t nr_sects, gfp_t gfp_mask, - struct page *page) -{ - struct bio *bio = NULL; - struct blk_plug plug; - int ret; - - blk_start_plug(&plug); - ret = __blkdev_issue_write_same(bdev, sector, nr_sects, gfp_mask, page, - &bio); - if (ret == 0 && bio) { - ret = submit_bio_wait(bio); - bio_put(bio); - } - blk_finish_plug(&plug); - return ret; -} -EXPORT_SYMBOL(blkdev_issue_write_same); - static int __blkdev_issue_write_zeroes(struct block_device *bdev, sector_t sector, sector_t nr_sects, gfp_t gfp_mask, struct bio **biop, unsigned flags) |