@@ -2018,6 +2018,26 @@ int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr,
ASSERT(btrfs_test_opt(fs_info, DEGRADED));
continue;
}
+
+ if (btrfs_dev_is_sequential(stripe->dev,
+ stripe->physical) &&
+ stripe->length == stripe->dev->zone_size) {
+ ret = blkdev_reset_zones(stripe->dev->bdev,
+ stripe->physical >>
+ SECTOR_SHIFT,
+ stripe->length >>
+ SECTOR_SHIFT,
+ GFP_NOFS);
+ if (!ret)
+ discarded_bytes += stripe->length;
+ else
+ break;
+ set_bit(stripe->physical >>
+ stripe->dev->zone_size_shift,
+ stripe->dev->empty_zones);
+ continue;
+ }
+
req_q = bdev_get_queue(stripe->dev->bdev);
if (!blk_queue_discard(req_q))
continue;
@@ -11430,7 +11450,8 @@ void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info)
spin_unlock(&space_info->lock);
/* DISCARD can flip during remount */
- trimming = btrfs_test_opt(fs_info, DISCARD);
+ trimming = btrfs_test_opt(fs_info, DISCARD) ||
+ btrfs_fs_incompat(fs_info, HMZONED);
/* Implicit trim during transaction commit. */
if (trimming)
For an HMZONED volume, a block group maps to a zone of the device. For deleted unused block groups, the zone of the block group can be reset to rewind the zone write pointer at the start of the zone. Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com> --- fs/btrfs/extent-tree.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-)