[PATCH v3 05/14] btrfs: fix tail delete of RAID stripe-extents

From: Johannes Thumshirn
Date: Thu Jan 09 2025 - 10:19:31 EST


From: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>

Fix tail delete of RAID stripe-extents, if there is a range to be deleted
as well after the tail delete of the extent.

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx>
Reviewed-by: Filipe Manana <fdmanana@xxxxxxxx>
---
fs/btrfs/raid-stripe-tree.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/raid-stripe-tree.c b/fs/btrfs/raid-stripe-tree.c
index 9e559ad48810b704c997ff5e51222aced0b91637..ef76202c3a38460c5a36d7309ac0a616f73b0cc0 100644
--- a/fs/btrfs/raid-stripe-tree.c
+++ b/fs/btrfs/raid-stripe-tree.c
@@ -119,11 +119,18 @@ int btrfs_delete_raid_extent(struct btrfs_trans_handle *trans, u64 start, u64 le
* length to the new size and then re-insert the item.
*/
if (found_start < start) {
- u64 diff = start - found_start;
+ u64 diff_start = start - found_start;

btrfs_partially_delete_raid_extent(trans, path, &key,
- diff, 0);
- break;
+ diff_start, 0);
+
+ start += (key.offset - diff_start);
+ length -= (key.offset - diff_start);
+ if (length == 0)
+ break;
+
+ btrfs_release_path(path);
+ continue;
}

/*

--
2.43.0