block: add a separate operation type for secure erase
Instead of overloading the discard support with the REQ_SECURE flag.
Use the opportunity to rename the queue flag as well, and remove the
dead checks for this flag in the RAID 1 and RAID 10 drivers that don't
claim support for secure erase.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/blk-lib.c b/block/blk-lib.c
index ff2a7f0..78626c2 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -23,20 +23,27 @@
}
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 (!blk_queue_secure_erase(q))
+ return -EOPNOTSUPP;
+ op = REQ_OP_SECURE_ERASE;
+ } else {
+ if (!blk_queue_discard(q))
+ 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 +73,7 @@
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;
@@ -100,16 +107,12 @@
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);