summaryrefslogtreecommitdiff
path: root/block/blk-lib.c
diff options
context:
space:
mode:
Diffstat (limited to 'block/blk-lib.c')
-rw-r--r--block/blk-lib.c44
1 files changed, 26 insertions, 18 deletions
diff --git a/block/blk-lib.c b/block/blk-lib.c
index 9031d2af0b47..083e56f72308 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -23,20 +23,32 @@ 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 op_flags,
+ sector_t nr_sects, gfp_t gfp_mask, int flags,
struct bio **biop)
{
struct request_queue *q = bdev_get_queue(bdev);
struct bio *bio = *biop;
unsigned int granularity;
+ enum req_op op;
int alignment;
if (!q)
return -ENXIO;
- if (!blk_queue_discard(q))
- return -EOPNOTSUPP;
- if ((op_flags & REQ_SECURE) && !blk_queue_secdiscard(q))
- return -EOPNOTSUPP;
+
+ if (flags & BLKDEV_DISCARD_SECURE) {
+ if (flags & BLKDEV_DISCARD_ZERO)
+ return -EOPNOTSUPP;
+ if (!blk_queue_secure_erase(q))
+ return -EOPNOTSUPP;
+ op = REQ_OP_SECURE_ERASE;
+ } else {
+ if (!blk_queue_discard(q))
+ return -EOPNOTSUPP;
+ if ((flags & BLKDEV_DISCARD_ZERO) &&
+ !q->limits.discard_zeroes_data)
+ return -EOPNOTSUPP;
+ op = REQ_OP_DISCARD;
+ }
/* Zero-sector (unknown) and one-sector granularities are the same. */
granularity = max(q->limits.discard_granularity >> 9, 1U);
@@ -66,7 +78,7 @@ 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_set_op_attrs(bio, REQ_OP_DISCARD, op_flags);
+ bio_set_op_attrs(bio, op, 0);
bio->bi_iter.bi_size = req_sects << 9;
nr_sects -= req_sects;
@@ -100,20 +112,16 @@ 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 op_flags = 0;
struct bio *bio = NULL;
struct blk_plug plug;
int ret;
- if (flags & BLKDEV_DISCARD_SECURE)
- op_flags |= REQ_SECURE;
-
blk_start_plug(&plug);
- ret = __blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, op_flags,
+ ret = __blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, flags,
&bio);
if (!ret && bio) {
ret = submit_bio_wait(bio);
- if (ret == -EOPNOTSUPP)
+ if (ret == -EOPNOTSUPP && !(flags & BLKDEV_DISCARD_ZERO))
ret = 0;
bio_put(bio);
}
@@ -173,7 +181,7 @@ int blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
ret = submit_bio_wait(bio);
bio_put(bio);
}
- return ret != -EOPNOTSUPP ? ret : 0;
+ return ret;
}
EXPORT_SYMBOL(blkdev_issue_write_same);
@@ -244,11 +252,11 @@ static int __blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
int blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
sector_t nr_sects, gfp_t gfp_mask, bool discard)
{
- struct request_queue *q = bdev_get_queue(bdev);
-
- if (discard && blk_queue_discard(q) && q->limits.discard_zeroes_data &&
- blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, 0) == 0)
- return 0;
+ if (discard) {
+ if (!blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask,
+ BLKDEV_DISCARD_ZERO))
+ return 0;
+ }
if (bdev_write_same(bdev) &&
blkdev_issue_write_same(bdev, sector, nr_sects, gfp_mask,