block discard: use bio set op accessor

This converts the block issue discard helper and users to use
the bio_set_op_attrs accessor and only pass in the operation flags
like REQ_SEQURE.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/block/blk-lib.c b/block/blk-lib.c
index c614eaa7b853fc3a96bfb01b7a42c1dee8aeb163..ff2a7f04af4df84475e107e2d2d244da6739eb1e 100644 (file)
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -23,7 +23,8 @@ static struct bio *next_bio(struct bio *bio, unsigned int nr_pages,
 }
 
 int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
-               sector_t nr_sects, gfp_t gfp_mask, int type, struct bio **biop)
+               sector_t nr_sects, gfp_t gfp_mask, int op_flags,
+               struct bio **biop)
 {
        struct request_queue *q = bdev_get_queue(bdev);
        struct bio *bio = *biop;
@@ -34,7 +35,7 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
                return -ENXIO;
        if (!blk_queue_discard(q))
                return -EOPNOTSUPP;
-       if ((type & REQ_SECURE) && !blk_queue_secdiscard(q))
+       if ((op_flags & REQ_SECURE) && !blk_queue_secdiscard(q))
                return -EOPNOTSUPP;
 
        /* Zero-sector (unknown) and one-sector granularities are the same.  */
@@ -65,7 +66,7 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
                bio = next_bio(bio, 1, gfp_mask);
                bio->bi_iter.bi_sector = sector;
                bio->bi_bdev = bdev;
-               bio->bi_rw = type;
+               bio_set_op_attrs(bio, REQ_OP_DISCARD, op_flags);
 
                bio->bi_iter.bi_size = req_sects << 9;
                nr_sects -= req_sects;
@@ -99,16 +100,16 @@ EXPORT_SYMBOL(__blkdev_issue_discard);
 int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
                sector_t nr_sects, gfp_t gfp_mask, unsigned long flags)
 {
-       int type = REQ_WRITE | REQ_DISCARD;
+       int op_flags = 0;
        struct bio *bio = NULL;
        struct blk_plug plug;
        int ret;
 
        if (flags & BLKDEV_DISCARD_SECURE)
-               type |= REQ_SECURE;
+               op_flags |= REQ_SECURE;
 
        blk_start_plug(&plug);
-       ret = __blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, type,
+       ret = __blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, op_flags,
                        &bio);
        if (!ret && bio) {
                ret = submit_bio_wait(bio);

diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 8c070eed982c51496f2f51a0dfc7db6f19719b70..e8661c25d3ea6c7518dcafe531f77976b3076ad9 100644 (file)
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -360,7 +360,7 @@ static int issue_discard(struct discard_op *op, dm_block_t data_b, dm_block_t da
        sector_t len = block_to_sectors(tc->pool, data_e - data_b);
 
        return __blkdev_issue_discard(tc->pool_dev->bdev, s, len,
-                                     GFP_NOWAIT, REQ_WRITE | REQ_DISCARD, &op->bio);
+                                     GFP_NOWAIT, 0, &op->bio);
 }
 
 static void end_discard(struct discard_op *op, int r)

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 49c2dbcad583b0ef7e6a487b50e00edfdac53c29..8c78aca080af56cb9c57e0f186b3ec396011756c 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1149,7 +1149,8 @@ extern int blkdev_issue_flush(struct block_device *, gfp_t, sector_t *);
 extern int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
                sector_t nr_sects, gfp_t gfp_mask, unsigned long flags);
 extern int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
-               sector_t nr_sects, gfp_t gfp_mask, int type, struct bio **biop);
+               sector_t nr_sects, gfp_t gfp_mask, int op_flags,
+               struct bio **biop);
 extern int blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
                sector_t nr_sects, gfp_t gfp_mask, struct page *page);
 extern int blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,