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btrfs: zoned: fix block group alloc_offset calculation 

alloc_offset is offset from the start of a block group and @offset is
actually an address in logical space. Thus, we need to consider
block_group->start when calculating them.

Fixes: 011b41bffa ("btrfs: zoned: advance allocation pointer after tree log node")
CC: stable@vger.kernel.org # 5.12+
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Naohiro Aota 2021-08-09 13:13:44 +09:00 committed by David Sterba
parent ba86dd9fe6
commit 0ae79c6fe7
1 changed files with 5 additions and 2 deletions
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7
fs/btrfs/free-space-cache.c
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@ -2647,8 +2647,11 @@ int btrfs_remove_free_space(struct btrfs_block_group *block_group,
* btrfs_pin_extent_for_log_replay() when replaying the log.
* Advance the pointer not to overwrite the tree-log nodes.
*/
if (block_group->alloc_offset < offset + bytes)
block_group->alloc_offset = offset + bytes;
if (block_group->start + block_group->alloc_offset <
offset + bytes) {
block_group->alloc_offset =
offset + bytes - block_group->start;
}
return 0;
}