[PATCH 26/27] block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARD

Christoph Hellwig
2022-04-15T04:54:39Z

Secure erase is a very different operation from discard in that it is
a data integrity operation vs hint. Fully split the limits and helper
infrastructure to make the separation more clear.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> [drbd]
Acked-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> [nifs2]
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org> [f2fs]
Acked-by: Coly Li <colyli@suse.de> [bcache]
Acked-by: David Sterba <dsterba@suse.com> [btrfs]
---
block/blk-core.c | 2 +-
block/blk-lib.c | 64 ++++++++++++++++++++---------
block/blk-mq-debugfs.c | 1 -
block/blk-settings.c | 16 +++++++-
block/fops.c | 2 +-
block/ioctl.c | 43 +++++++++++++++----
drivers/block/drbd/drbd_receiver.c | 5 ++-
drivers/block/rnbd/rnbd-clt.c | 4 +-
drivers/block/rnbd/rnbd-srv-dev.h | 2 +-
drivers/block/xen-blkback/blkback.c | 15 +++----
drivers/block/xen-blkback/xenbus.c | 5 +--
drivers/block/xen-blkfront.c | 5 ++-
drivers/md/bcache/alloc.c | 2 +-
drivers/md/dm-table.c | 8 ++--
drivers/md/dm-thin.c | 4 +-
drivers/md/md.c | 2 +-
drivers/md/raid5-cache.c | 6 +--
drivers/mmc/core/queue.c | 2 +-
drivers/nvme/target/io-cmd-bdev.c | 2 +-
drivers/target/target_core_file.c | 2 +-
drivers/target/target_core_iblock.c | 2 +-
fs/btrfs/extent-tree.c | 4 +-
fs/ext4/mballoc.c | 2 +-
fs/f2fs/file.c | 16 ++++----
fs/f2fs/segment.c | 2 +-
fs/jbd2/journal.c | 2 +-
fs/nilfs2/sufile.c | 4 +-
fs/nilfs2/the_nilfs.c | 4 +-
fs/ntfs3/super.c | 2 +-
fs/xfs/xfs_discard.c | 2 +-
fs/xfs/xfs_log_cil.c | 2 +-
include/linux/blkdev.h | 27 +++++++-----
mm/swapfile.c | 6 +--
33 files changed, 168 insertions(+), 99 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index b5c3a8049134c..ee18b6a699bdf 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -824,7 +824,7 @@ void submit_bio_noacct(struct bio *bio)
goto not_supported;
break;
case REQ_OP_SECURE_ERASE:
- if (!blk_queue_secure_erase(q))
+ if (!bdev_max_secure_erase_sectors(bdev))
goto not_supported;
break;
case REQ_OP_ZONE_APPEND:
diff --git a/block/blk-lib.c b/block/blk-lib.c
index 43aa4d7fe859f..09b7e1200c0f4 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -36,26 +36,15 @@ static sector_t bio_discard_limit(struct block_device *bdev, sector_t sector)
}

int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
- sector_t nr_sects, gfp_t gfp_mask, int flags,
- struct bio **biop)
+ sector_t nr_sects, gfp_t gfp_mask, struct bio **biop)
{
- struct request_queue *q = bdev_get_queue(bdev);
struct bio *bio = *biop;
- unsigned int op;
sector_t bs_mask;

if (bdev_read_only(bdev))
return -EPERM;
-
- if (flags & BLKDEV_DISCARD_SECURE) {
- if (!blk_queue_secure_erase(q))
- return -EOPNOTSUPP;
- op = REQ_OP_SECURE_ERASE;
- } else {
- if (!bdev_max_discard_sectors(bdev))
- return -EOPNOTSUPP;
- op = REQ_OP_DISCARD;
- }
+ if (!bdev_max_discard_sectors(bdev))
+ return -EOPNOTSUPP;

/* In case the discard granularity isn't set by buggy device driver */
if (WARN_ON_ONCE(!bdev_discard_granularity(bdev))) {
@@ -77,7 +66,7 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
sector_t req_sects =
min(nr_sects, bio_discard_limit(bdev, sector));

- bio = blk_next_bio(bio, bdev, 0, op, gfp_mask);
+ bio = blk_next_bio(bio, bdev, 0, REQ_OP_DISCARD, gfp_mask);
bio->bi_iter.bi_sector = sector;
bio->bi_iter.bi_size = req_sects << 9;
sector += req_sects;
@@ -103,21 +92,19 @@ EXPORT_SYMBOL(__blkdev_issue_discard);
* @sector: start sector
* @nr_sects: number of sectors to discard
* @gfp_mask: memory allocation flags (for bio_alloc)
- * @flags: BLKDEV_DISCARD_* flags to control behaviour
*
* Description:
* Issue a discard request for the sectors in question.
*/
int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
- sector_t nr_sects, gfp_t gfp_mask, unsigned long flags)
+ sector_t nr_sects, gfp_t gfp_mask)
{
struct bio *bio = NULL;
struct blk_plug plug;
int ret;

blk_start_plug(&plug);
- ret = __blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, flags,
- &bio);
+ ret = __blkdev_issue_discard(bdev, sector, nr_sects, gfp_mask, &bio);
if (!ret && bio) {
ret = submit_bio_wait(bio);
if (ret == -EOPNOTSUPP)
@@ -314,3 +301,42 @@ int blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
return ret;
}
EXPORT_SYMBOL(blkdev_issue_zeroout);
+
+int blkdev_issue_secure_erase(struct block_device *bdev, sector_t sector,
+ sector_t nr_sects, gfp_t gfp)
+{
+ sector_t bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1;
+ unsigned int max_sectors = bdev_max_secure_erase_sectors(bdev);
+ struct bio *bio = NULL;
+ struct blk_plug plug;
+ int ret = 0;
+
+ if (max_sectors == 0)
+ return -EOPNOTSUPP;
+ if ((sector | nr_sects) & bs_mask)
+ return -EINVAL;
+ if (bdev_read_only(bdev))
+ return -EPERM;
+
+ blk_start_plug(&plug);
+ for (;;) {
+ unsigned int len = min_t(sector_t, nr_sects, max_sectors);
+
+ bio = blk_next_bio(bio, bdev, 0, REQ_OP_SECURE_ERASE, gfp);
+ bio->bi_iter.bi_sector = sector;
+ bio->bi_iter.bi_size = len;
+
+ sector += len << SECTOR_SHIFT;
+ nr_sects -= len << SECTOR_SHIFT;
+ if (!nr_sects) {
+ ret = submit_bio_wait(bio);
+ bio_put(bio);
+ break;
+ }
+ cond_resched();
+ }
+ blk_finish_plug(&plug);
+
+ return ret;
+}
+EXPORT_SYMBOL(blkdev_issue_secure_erase);
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index fd111c5001256..7e4136a60e1cc 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -115,7 +115,6 @@ static const char *const blk_queue_flag_name[] = {
QUEUE_FLAG_NAME(IO_STAT),
QUEUE_FLAG_NAME(NOXMERGES),
QUEUE_FLAG_NAME(ADD_RANDOM),
- QUEUE_FLAG_NAME(SECERASE),
QUEUE_FLAG_NAME(SAME_FORCE),
QUEUE_FLAG_NAME(DEAD),
QUEUE_FLAG_NAME(INIT_DONE),
diff --git a/block/blk-settings.c b/block/blk-settings.c
index fd83d674afd0a..6ccceb421ed2f 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -46,6 +46,7 @@ void blk_set_default_limits(struct queue_limits *lim)
lim->max_zone_append_sectors = 0;
lim->max_discard_sectors = 0;
lim->max_hw_discard_sectors = 0;
+ lim->max_secure_erase_sectors = 0;
lim->discard_granularity = 0;
lim->discard_alignment = 0;
lim->discard_misaligned = 0;
@@ -176,6 +177,18 @@ void blk_queue_max_discard_sectors(struct request_queue *q,
}
EXPORT_SYMBOL(blk_queue_max_discard_sectors);

+/**
+ * blk_queue_max_secure_erase_sectors - set max sectors for a secure erase
+ * @q: the request queue for the device
+ * @max_sectors: maximum number of sectors to secure_erase
+ **/
+void blk_queue_max_secure_erase_sectors(struct request_queue *q,
+ unsigned int max_sectors)
+{
+ q->limits.max_secure_erase_sectors = max_sectors;
+}
+EXPORT_SYMBOL(blk_queue_max_secure_erase_sectors);
+
/**
* blk_queue_max_write_zeroes_sectors - set max sectors for a single
* write zeroes
@@ -661,7 +674,8 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
t->discard_alignment = lcm_not_zero(t->discard_alignment, alignment) %
t->discard_granularity;
}
-
+ t->max_secure_erase_sectors = min_not_zero(t->max_secure_erase_sectors,
+ b->max_secure_erase_sectors);
t->zone_write_granularity = max(t->zone_write_granularity,
b->zone_write_granularity);
t->zoned = max(t->zoned, b->zoned);
diff --git a/block/fops.c b/block/fops.c
index ba5e7d5ff9a52..e3643362c2440 100644
--- a/block/fops.c
+++ b/block/fops.c
@@ -677,7 +677,7 @@ static long blkdev_fallocate(struct file *file, int mode, loff_t start,
break;
case FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE | FALLOC_FL_NO_HIDE_STALE:
error = blkdev_issue_discard(bdev, start >> SECTOR_SHIFT,
- len >> SECTOR_SHIFT, GFP_KERNEL, 0);
+ len >> SECTOR_SHIFT, GFP_KERNEL);
break;
default:
error = -EOPNOTSUPP;
diff --git a/block/ioctl.c b/block/ioctl.c
index c2cd3ba5290ce..5b5027fa78f7e 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -83,7 +83,7 @@ static int compat_blkpg_ioctl(struct block_device *bdev,
#endif

static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode,
- unsigned long arg, unsigned long flags)
+ unsigned long arg)
{
uint64_t range[2];
uint64_t start, len;
@@ -114,15 +114,43 @@ static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode,
err = truncate_bdev_range(bdev, mode, start, start + len - 1);
if (err)
goto fail;
-
- err = blkdev_issue_discard(bdev, start >> 9, len >> 9,
- GFP_KERNEL, flags);
-
+ err = blkdev_issue_discard(bdev, start >> 9, len >> 9, GFP_KERNEL);
fail:
filemap_invalidate_unlock(inode->i_mapping);
return err;
}

+static int blk_ioctl_secure_erase(struct block_device *bdev, fmode_t mode,
+ void __user *argp)
+{
+ uint64_t start, len;
+ uint64_t range[2];
+ int err;
+
+ if (!(mode & FMODE_WRITE))
+ return -EBADF;
+ if (!bdev_max_secure_erase_sectors(bdev))
+ return -EOPNOTSUPP;
+ if (copy_from_user(range, argp, sizeof(range)))
+ return -EFAULT;
+
+ start = range[0];
+ len = range[1];
+ if ((start & 511) || (len & 511))
+ return -EINVAL;
+ if (start + len > bdev_nr_bytes(bdev))
+ return -EINVAL;
+
+ filemap_invalidate_lock(bdev->bd_inode->i_mapping);
+ err = truncate_bdev_range(bdev, mode, start, start + len - 1);
+ if (!err)
+ err = blkdev_issue_secure_erase(bdev, start >> 9, len >> 9,
+ GFP_KERNEL);
+ filemap_invalidate_unlock(bdev->bd_inode->i_mapping);
+ return err;
+}
+
+
static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode,
unsigned long arg)
{
@@ -450,10 +478,9 @@ static int blkdev_common_ioctl(struct block_device *bdev, fmode_t mode,
case BLKROSET:
return blkdev_roset(bdev, mode, cmd, arg);
case BLKDISCARD:
- return blk_ioctl_discard(bdev, mode, arg, 0);
+ return blk_ioctl_discard(bdev, mode, arg);
case BLKSECDISCARD:
- return blk_ioctl_discard(bdev, mode, arg,
- BLKDEV_DISCARD_SECURE);
+ return blk_ioctl_secure_erase(bdev, mode, argp);
case BLKZEROOUT:
return blk_ioctl_zeroout(bdev, mode, arg);
case BLKGETDISKSEQ:
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 275c53c7b629e..2957b0b68d600 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -1547,7 +1547,8 @@ int drbd_issue_discard_or_zero_out(struct drbd_device *device, sector_t start, u
start = tmp;
}
while (nr_sectors >= max_discard_sectors) {
- err |= blkdev_issue_discard(bdev, start, max_discard_sectors, GFP_NOIO, 0);
+ err |= blkdev_issue_discard(bdev, start, max_discard_sectors,
+ GFP_NOIO);
nr_sectors -= max_discard_sectors;
start += max_discard_sectors;
}
@@ -1559,7 +1560,7 @@ int drbd_issue_discard_or_zero_out(struct drbd_device *device, sector_t start, u
nr = nr_sectors;
nr -= (unsigned int)nr % granularity;
if (nr) {
- err |= blkdev_issue_discard(bdev, start, nr, GFP_NOIO, 0);
+ err |= blkdev_issue_discard(bdev, start, nr, GFP_NOIO);
nr_sectors -= nr;
start += nr;
}
diff --git a/drivers/block/rnbd/rnbd-clt.c b/drivers/block/rnbd/rnbd-clt.c
index efa99a3884507..d178be175ad99 100644
--- a/drivers/block/rnbd/rnbd-clt.c
+++ b/drivers/block/rnbd/rnbd-clt.c
@@ -1365,8 +1365,8 @@ static void setup_request_queue(struct rnbd_clt_dev *dev)
dev->queue->limits.discard_granularity = dev->discard_granularity;
dev->queue->limits.discard_alignment = dev->discard_alignment;
if (dev->secure_discard)
- blk_queue_flag_set(QUEUE_FLAG_SECERASE, dev->queue);
-
+ blk_queue_max_secure_erase_sectors(dev->queue,
+ dev->max_discard_sectors);
blk_queue_flag_set(QUEUE_FLAG_SAME_COMP, dev->queue);
blk_queue_flag_set(QUEUE_FLAG_SAME_FORCE, dev->queue);
blk_queue_max_segments(dev->queue, dev->max_segments);
diff --git a/drivers/block/rnbd/rnbd-srv-dev.h b/drivers/block/rnbd/rnbd-srv-dev.h
index 1f7e1c8fd4d9b..d080a0de59225 100644
--- a/drivers/block/rnbd/rnbd-srv-dev.h
+++ b/drivers/block/rnbd/rnbd-srv-dev.h
@@ -44,7 +44,7 @@ static inline int rnbd_dev_get_max_hw_sects(const struct rnbd_dev *dev)

static inline int rnbd_dev_get_secure_discard(const struct rnbd_dev *dev)
{
- return blk_queue_secure_erase(bdev_get_queue(dev->bdev));
+ return bdev_max_secure_erase_sectors(dev->bdev);
}

static inline int rnbd_dev_get_max_discard_sects(const struct rnbd_dev *dev)
diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index de42458195bc1..a97f2bf5b01b9 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -970,7 +970,6 @@ static int dispatch_discard_io(struct xen_blkif_ring *ring,
int status = BLKIF_RSP_OKAY;
struct xen_blkif *blkif = ring->blkif;
struct block_device *bdev = blkif->vbd.bdev;
- unsigned long secure;
struct phys_req preq;

xen_blkif_get(blkif);
@@ -987,13 +986,15 @@ static int dispatch_discard_io(struct xen_blkif_ring *ring,
}
ring->st_ds_req++;

- secure = (blkif->vbd.discard_secure &&
- (req->u.discard.flag & BLKIF_DISCARD_SECURE)) ?
- BLKDEV_DISCARD_SECURE : 0;
+ if (blkif->vbd.discard_secure &&
+ (req->u.discard.flag & BLKIF_DISCARD_SECURE))
+ err = blkdev_issue_secure_erase(bdev,
+ req->u.discard.sector_number,
+ req->u.discard.nr_sectors, GFP_KERNEL);
+ else
+ err = blkdev_issue_discard(bdev, req->u.discard.sector_number,
+ req->u.discard.nr_sectors, GFP_KERNEL);

- err = blkdev_issue_discard(bdev, req->u.discard.sector_number,
- req->u.discard.nr_sectors,
- GFP_KERNEL, secure);
fail_response:
if (err == -EOPNOTSUPP) {
pr_debug("discard op failed, not supported\n");
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index 83cd08041e6b3..b21bffc9c50bc 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -484,7 +484,6 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle,
{
struct xen_vbd *vbd;
struct block_device *bdev;
- struct request_queue *q;

vbd = &blkif->vbd;
vbd->handle = handle;
@@ -516,11 +515,9 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle,
if (vbd->bdev->bd_disk->flags & GENHD_FL_REMOVABLE)
vbd->type |= VDISK_REMOVABLE;

- q = bdev_get_queue(bdev);
if (bdev_write_cache(bdev))
vbd->flush_support = true;
-
- if (q && blk_queue_secure_erase(q))
+ if (bdev_max_secure_erase_sectors(bdev))
vbd->discard_secure = true;

vbd->feature_gnt_persistent = feature_persistent;
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index e13cb4d48f1ea..0f3f5238f7bce 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -949,7 +949,8 @@ static void blkif_set_queue_limits(struct blkfront_info *info)
info->physical_sector_size;
rq->limits.discard_alignment = info->discard_alignment;
if (info->feature_secdiscard)
- blk_queue_flag_set(QUEUE_FLAG_SECERASE, rq);
+ blk_queue_max_secure_erase_sectors(rq,
+ get_capacity(gd));
}

/* Hard sector size and max sectors impersonate the equiv. hardware. */
@@ -1606,7 +1607,7 @@ static irqreturn_t blkif_interrupt(int irq, void *dev_id)
info->feature_discard = 0;
info->feature_secdiscard = 0;
blk_queue_max_discard_sectors(rq, 0);
- blk_queue_flag_clear(QUEUE_FLAG_SECERASE, rq);
+ blk_queue_max_secure_erase_sectors(rq, 0);
}
break;
case BLKIF_OP_FLUSH_DISKCACHE:
diff --git a/drivers/md/bcache/alloc.c b/drivers/md/bcache/alloc.c
index 097577ae3c471..ce13c272c3872 100644
--- a/drivers/md/bcache/alloc.c
+++ b/drivers/md/bcache/alloc.c
@@ -336,7 +336,7 @@ static int bch_allocator_thread(void *arg)
mutex_unlock(&ca->set->bucket_lock);
blkdev_issue_discard(ca->bdev,
bucket_to_sector(ca->set, bucket),
- ca->sb.bucket_size, GFP_KERNEL, 0);
+ ca->sb.bucket_size, GFP_KERNEL);
mutex_lock(&ca->set->bucket_lock);
}

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 0dff6907fd00d..e7d42f6335a2a 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -1920,9 +1920,7 @@ static int device_not_secure_erase_capable(struct dm_target *ti,
struct dm_dev *dev, sector_t start,
sector_t len, void *data)
{
- struct request_queue *q = bdev_get_queue(dev->bdev);
-
- return !blk_queue_secure_erase(q);
+ return !bdev_max_secure_erase_sectors(dev->bdev);
}

static bool dm_table_supports_secure_erase(struct dm_table *t)
@@ -1975,8 +1973,8 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
q->limits.discard_misaligned = 0;
}

- if (dm_table_supports_secure_erase(t))
- blk_queue_flag_set(QUEUE_FLAG_SECERASE, q);
+ if (!dm_table_supports_secure_erase(t))
+ q->limits.max_secure_erase_sectors = 0;

if (dm_table_supports_flush(t, (1UL << QUEUE_FLAG_WC))) {
wc = true;
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index eded4bcc4545f..84c083f766736 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -398,8 +398,8 @@ static int issue_discard(struct discard_op *op, dm_block_t data_b, dm_block_t da
sector_t s = block_to_sectors(tc->pool, data_b);
sector_t len = block_to_sectors(tc->pool, data_e - data_b);

- return __blkdev_issue_discard(tc->pool_dev->bdev, s, len,
- GFP_NOWAIT, 0, &op->bio);
+ return __blkdev_issue_discard(tc->pool_dev->bdev, s, len, GFP_NOWAIT,
+ &op->bio);
}

static void end_discard(struct discard_op *op, int r)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 19636c2f2cda4..2587f872c0884 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -8584,7 +8584,7 @@ void md_submit_discard_bio(struct mddev *mddev, struct md_rdev *rdev,
{
struct bio *discard_bio = NULL;

- if (__blkdev_issue_discard(rdev->bdev, start, size, GFP_NOIO, 0,
+ if (__blkdev_issue_discard(rdev->bdev, start, size, GFP_NOIO,
&discard_bio) || !discard_bio)
return;

diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index c3cbf9a574a39..094a4042589eb 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -1344,14 +1344,14 @@ static void r5l_write_super_and_discard_space(struct r5l_log *log,
if (log->last_checkpoint < end) {
blkdev_issue_discard(bdev,
log->last_checkpoint + log->rdev->data_offset,
- end - log->last_checkpoint, GFP_NOIO, 0);
+ end - log->last_checkpoint, GFP_NOIO);
} else {
blkdev_issue_discard(bdev,
log->last_checkpoint + log->rdev->data_offset,
log->device_size - log->last_checkpoint,
- GFP_NOIO, 0);
+ GFP_NOIO);
blkdev_issue_discard(bdev, log->rdev->data_offset, end,
- GFP_NOIO, 0);
+ GFP_NOIO);
}
}

diff --git a/drivers/mmc/core/queue.c b/drivers/mmc/core/queue.c
index cac6315010a3d..a3d4460055716 100644
--- a/drivers/mmc/core/queue.c
+++ b/drivers/mmc/core/queue.c
@@ -189,7 +189,7 @@ static void mmc_queue_setup_discard(struct request_queue *q,
if (card->pref_erase > max_discard)
q->limits.discard_granularity = SECTOR_SIZE;
if (mmc_can_secure_erase_trim(card))
- blk_queue_flag_set(QUEUE_FLAG_SECERASE, q);
+ blk_queue_max_secure_erase_sectors(q, max_discard);
}

static unsigned short mmc_get_max_segments(struct mmc_host *host)
diff --git a/drivers/nvme/target/io-cmd-bdev.c b/drivers/nvme/target/io-cmd-bdev.c
index d886c2c59554f..27a72504d31ce 100644
--- a/drivers/nvme/target/io-cmd-bdev.c
+++ b/drivers/nvme/target/io-cmd-bdev.c
@@ -360,7 +360,7 @@ static u16 nvmet_bdev_discard_range(struct nvmet_req *req,
ret = __blkdev_issue_discard(ns->bdev,
nvmet_lba_to_sect(ns, range->slba),
le32_to_cpu(range->nlb) << (ns->blksize_shift - 9),
- GFP_KERNEL, 0, bio);
+ GFP_KERNEL, bio);
if (ret && ret != -EOPNOTSUPP) {
req->error_slba = le64_to_cpu(range->slba);
return errno_to_nvme_status(req, ret);
diff --git a/drivers/target/target_core_file.c b/drivers/target/target_core_file.c
index b6ba582b06775..e68f1cc8ef98b 100644
--- a/drivers/target/target_core_file.c
+++ b/drivers/target/target_core_file.c
@@ -558,7 +558,7 @@ fd_execute_unmap(struct se_cmd *cmd, sector_t lba, sector_t nolb)
ret = blkdev_issue_discard(bdev,
target_to_linux_sector(dev, lba),
target_to_linux_sector(dev, nolb),
- GFP_KERNEL, 0);
+ GFP_KERNEL);
if (ret < 0) {
pr_warn("FILEIO: blkdev_issue_discard() failed: %d\n",
ret);
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c
index c4a903b8a47fc..378c80313a0f2 100644
--- a/drivers/target/target_core_iblock.c
+++ b/drivers/target/target_core_iblock.c
@@ -434,7 +434,7 @@ iblock_execute_unmap(struct se_cmd *cmd, sector_t lba, sector_t nolb)
ret = blkdev_issue_discard(bdev,
target_to_linux_sector(dev, lba),
target_to_linux_sector(dev, nolb),
- GFP_KERNEL, 0);
+ GFP_KERNEL);
if (ret < 0) {
pr_err("blkdev_issue_discard() failed: %d\n", ret);
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index efd8deb3ab7e8..5c1d3a564da5a 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -1239,7 +1239,7 @@ static int btrfs_issue_discard(struct block_device *bdev, u64 start, u64 len,

if (size) {
ret = blkdev_issue_discard(bdev, start >> 9, size >> 9,
- GFP_NOFS, 0);
+ GFP_NOFS);
if (!ret)
*discarded_bytes += size;
else if (ret != -EOPNOTSUPP)
@@ -1256,7 +1256,7 @@ static int btrfs_issue_discard(struct block_device *bdev, u64 start, u64 len,

if (bytes_left) {
ret = blkdev_issue_discard(bdev, start >> 9, bytes_left >> 9,
- GFP_NOFS, 0);
+ GFP_NOFS);
if (!ret)
*discarded_bytes += bytes_left;
}
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 6d1820536d88d..ea653d19f9ec7 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3629,7 +3629,7 @@ static inline int ext4_issue_discard(struct super_block *sb,
return __blkdev_issue_discard(sb->s_bdev,
(sector_t)discard_block << (sb->s_blocksize_bits - 9),
(sector_t)count << (sb->s_blocksize_bits - 9),
- GFP_NOFS, 0, biop);
+ GFP_NOFS, biop);
} else
return sb_issue_discard(sb, discard_block, count, GFP_NOFS, 0);
}
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 8053d99f3920b..35b6c720c2bc1 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -3685,18 +3685,18 @@ static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg)
static int f2fs_secure_erase(struct block_device *bdev, struct inode *inode,
pgoff_t off, block_t block, block_t len, u32 flags)
{
- struct request_queue *q = bdev_get_queue(bdev);
sector_t sector = SECTOR_FROM_BLOCK(block);
sector_t nr_sects = SECTOR_FROM_BLOCK(len);
int ret = 0;

- if (!q)
- return -ENXIO;
-
- if (flags & F2FS_TRIM_FILE_DISCARD)
- ret = blkdev_issue_discard(bdev, sector, nr_sects, GFP_NOFS,
- blk_queue_secure_erase(q) ?
- BLKDEV_DISCARD_SECURE : 0);
+ if (flags & F2FS_TRIM_FILE_DISCARD) {
+ if (bdev_max_secure_erase_sectors(bdev))
+ ret = blkdev_issue_secure_erase(bdev, sector, nr_sects,
+ GFP_NOFS);
+ else
+ ret = blkdev_issue_discard(bdev, sector, nr_sects,
+ GFP_NOFS);
+ }

if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) {
if (IS_ENCRYPTED(inode))
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 71f09adbcba86..e433c61e64b93 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1244,7 +1244,7 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
err = __blkdev_issue_discard(bdev,
SECTOR_FROM_BLOCK(start),
SECTOR_FROM_BLOCK(len),
- GFP_NOFS, 0, &bio);
+ GFP_NOFS, &bio);
submit:
if (err) {
spin_lock_irqsave(&dc->lock, flags);
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index 19d226cd4ff4d..c0cbeeaec2d1a 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1825,7 +1825,7 @@ static int __jbd2_journal_erase(journal_t *journal, unsigned int flags)
err = blkdev_issue_discard(journal->j_dev,
byte_start >> SECTOR_SHIFT,
byte_count >> SECTOR_SHIFT,
- GFP_NOFS, 0);
+ GFP_NOFS);
} else if (flags & JBD2_JOURNAL_FLUSH_ZEROOUT) {
err = blkdev_issue_zeroout(journal->j_dev,
byte_start >> SECTOR_SHIFT,
diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c
index e385cca2004a7..77ff8e95421fa 100644
--- a/fs/nilfs2/sufile.c
+++ b/fs/nilfs2/sufile.c
@@ -1100,7 +1100,7 @@ int nilfs_sufile_trim_fs(struct inode *sufile, struct fstrim_range *range)
ret = blkdev_issue_discard(nilfs->ns_bdev,
start * sects_per_block,
nblocks * sects_per_block,
- GFP_NOFS, 0);
+ GFP_NOFS);
if (ret < 0) {
put_bh(su_bh);
goto out_sem;
@@ -1134,7 +1134,7 @@ int nilfs_sufile_trim_fs(struct inode *sufile, struct fstrim_range *range)
ret = blkdev_issue_discard(nilfs->ns_bdev,
start * sects_per_block,
nblocks * sects_per_block,
- GFP_NOFS, 0);
+ GFP_NOFS);
if (!ret)
ndiscarded += nblocks;
}
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index dd48a8f74d577..3b4a079c9617c 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -672,7 +672,7 @@ int nilfs_discard_segments(struct the_nilfs *nilfs, __u64 *segnump,
ret = blkdev_issue_discard(nilfs->ns_bdev,
start * sects_per_block,
nblocks * sects_per_block,
- GFP_NOFS, 0);
+ GFP_NOFS);
if (ret < 0)
return ret;
nblocks = 0;
@@ -682,7 +682,7 @@ int nilfs_discard_segments(struct the_nilfs *nilfs, __u64 *segnump,
ret = blkdev_issue_discard(nilfs->ns_bdev,
start * sects_per_block,
nblocks * sects_per_block,
- GFP_NOFS, 0);
+ GFP_NOFS);
return ret;
}

diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 5f2e414cfa79b..5781b9e8e3d85 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -1333,7 +1333,7 @@ int ntfs_discard(struct ntfs_sb_info *sbi, CLST lcn, CLST len)
return 0;

err = blkdev_issue_discard(sb->s_bdev, start >> 9, (end - start) >> 9,
- GFP_NOFS, 0);
+ GFP_NOFS);

if (err == -EOPNOTSUPP)
sbi->flags |= NTFS_FLAGS_NODISCARD;
diff --git a/fs/xfs/xfs_discard.c b/fs/xfs/xfs_discard.c
index e2ada115c23f9..c6fe3f6ebb6b0 100644
--- a/fs/xfs/xfs_discard.c
+++ b/fs/xfs/xfs_discard.c
@@ -114,7 +114,7 @@ xfs_trim_extents(
}

trace_xfs_discard_extent(mp, agno, fbno, flen);
- error = blkdev_issue_discard(bdev, dbno, dlen, GFP_NOFS, 0);
+ error = blkdev_issue_discard(bdev, dbno, dlen, GFP_NOFS);
if (error)
goto out_del_cursor;
*blocks_trimmed += flen;
diff --git a/fs/xfs/xfs_log_cil.c b/fs/xfs/xfs_log_cil.c
index ba57323bfdcea..c9f55e4f09571 100644
--- a/fs/xfs/xfs_log_cil.c
+++ b/fs/xfs/xfs_log_cil.c
@@ -605,7 +605,7 @@ xlog_discard_busy_extents(
error = __blkdev_issue_discard(mp->m_ddev_targp->bt_bdev,
XFS_AGB_TO_DADDR(mp, busyp->agno, busyp->bno),
XFS_FSB_TO_BB(mp, busyp->length),
- GFP_NOFS, 0, &bio);
+ GFP_NOFS, &bio);
if (error && error != -EOPNOTSUPP) {
xfs_info(mp,
"discard failed for extent [0x%llx,%u], error %d",
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f1cf557ea20ef..c9b5925af5a3b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -248,6 +248,7 @@ struct queue_limits {
unsigned int io_opt;
unsigned int max_discard_sectors;
unsigned int max_hw_discard_sectors;
+ unsigned int max_secure_erase_sectors;
unsigned int max_write_zeroes_sectors;
unsigned int max_zone_append_sectors;
unsigned int discard_granularity;
@@ -542,7 +543,6 @@ struct request_queue {
#define QUEUE_FLAG_IO_STAT 7 /* do disk/partitions IO accounting */
#define QUEUE_FLAG_NOXMERGES 9 /* No extended merges */
#define QUEUE_FLAG_ADD_RANDOM 10 /* Contributes to random pool */
-#define QUEUE_FLAG_SECERASE 11 /* supports secure erase */
#define QUEUE_FLAG_SAME_FORCE 12 /* force complete on same CPU */
#define QUEUE_FLAG_DEAD 13 /* queue tear-down finished */
#define QUEUE_FLAG_INIT_DONE 14 /* queue is initialized */
@@ -583,8 +583,6 @@ bool blk_queue_flag_test_and_set(unsigned int flag, struct request_queue *q);
#define blk_queue_add_random(q) test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags)
#define blk_queue_zone_resetall(q) \
test_bit(QUEUE_FLAG_ZONE_RESETALL, &(q)->queue_flags)
-#define blk_queue_secure_erase(q) \
- (test_bit(QUEUE_FLAG_SECERASE, &(q)->queue_flags))
#define blk_queue_dax(q) test_bit(QUEUE_FLAG_DAX, &(q)->queue_flags)
#define blk_queue_pci_p2pdma(q) \
test_bit(QUEUE_FLAG_PCI_P2PDMA, &(q)->queue_flags)
@@ -947,6 +945,8 @@ extern void blk_queue_chunk_sectors(struct request_queue *, unsigned int);
extern void blk_queue_max_segments(struct request_queue *, unsigned short);
extern void blk_queue_max_discard_segments(struct request_queue *,
unsigned short);
+void blk_queue_max_secure_erase_sectors(struct request_queue *q,
+ unsigned int max_sectors);
extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
extern void blk_queue_max_discard_sectors(struct request_queue *q,
unsigned int max_discard_sectors);
@@ -1087,13 +1087,12 @@ static inline long nr_blockdev_pages(void)

extern void blk_io_schedule(void);

-#define BLKDEV_DISCARD_SECURE (1 << 0) /* issue a secure erase */
-
-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 flags,
- struct bio **biop);
+int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
+ sector_t nr_sects, gfp_t gfp_mask);
+int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
+ sector_t nr_sects, gfp_t gfp_mask, struct bio **biop);
+int blkdev_issue_secure_erase(struct block_device *bdev, sector_t sector,
+ sector_t nr_sects, gfp_t gfp);

#define BLKDEV_ZERO_NOUNMAP (1 << 0) /* do not free blocks */
#define BLKDEV_ZERO_NOFALLBACK (1 << 1) /* don't write explicit zeroes */
@@ -1112,7 +1111,7 @@ static inline int sb_issue_discard(struct super_block *sb, sector_t block,
SECTOR_SHIFT),
nr_blocks << (sb->s_blocksize_bits -
SECTOR_SHIFT),
- gfp_mask, flags);
+ gfp_mask);
}
static inline int sb_issue_zeroout(struct super_block *sb, sector_t block,
sector_t nr_blocks, gfp_t gfp_mask)
@@ -1262,6 +1261,12 @@ static inline unsigned int bdev_discard_granularity(struct block_device *bdev)
return bdev_get_queue(bdev)->limits.discard_granularity;
}

+static inline unsigned int
+bdev_max_secure_erase_sectors(struct block_device *bdev)
+{
+ return bdev_get_queue(bdev)->limits.max_secure_erase_sectors;
+}
+
static inline unsigned int bdev_write_zeroes_sectors(struct block_device *bdev)
{
struct request_queue *q = bdev_get_queue(bdev);
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 5d9cedf9e7b84..a2b31fea0c42e 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -179,7 +179,7 @@ static int discard_swap(struct swap_info_struct *si)
nr_blocks = ((sector_t)se->nr_pages - 1) << (PAGE_SHIFT - 9);
if (nr_blocks) {
err = blkdev_issue_discard(si->bdev, start_block,
- nr_blocks, GFP_KERNEL, 0);
+ nr_blocks, GFP_KERNEL);
if (err)
return err;
cond_resched();
@@ -190,7 +190,7 @@ static int discard_swap(struct swap_info_struct *si)
nr_blocks = (sector_t)se->nr_pages << (PAGE_SHIFT - 9);

err = blkdev_issue_discard(si->bdev, start_block,
- nr_blocks, GFP_KERNEL, 0);
+ nr_blocks, GFP_KERNEL);
if (err)
break;

@@ -254,7 +254,7 @@ static void discard_swap_cluster(struct swap_info_struct *si,
start_block <<= PAGE_SHIFT - 9;
nr_blocks <<= PAGE_SHIFT - 9;
if (blkdev_issue_discard(si->bdev, start_block,
- nr_blocks, GFP_NOIO, 0))
+ nr_blocks, GFP_NOIO))
break;

se = next_se(se);
--
2.30.2