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btrfs: fix front delete range calculation for RAID stripe extents

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When deleting the front of a RAID stripe-extent the delete code
miscalculates the size on how much to pad the remaining extent part in the
front.

Fix the calculation so we're always having the sizes we expect.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Johannes Thumshirn
2025-01-13 20:31:45 +01:00
committed by David Sterba
parent 5a0e38eab7
commit a678543e60
1 changed files with 4 additions and 2 deletions
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6
fs/btrfs/raid-stripe-tree.c
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@@ -136,10 +136,12 @@ 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_end > end) {
u64 diff = found_end - end;
u64 diff_end = found_end - end;
btrfs_partially_delete_raid_extent(trans, path, &key,
diff, diff);
key.offset - length,
length);
ASSERT(key.offset - diff_end == length);
break;
}