diff options
| author | Filipe Manana <fdmanana@suse.com> | 2022-09-19 15:06:33 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-09-29 17:08:30 +0200 |
| commit | a1ba4c080bef187f5bdbc2191092fbe7341a5794 (patch) | |
| tree | d77d701cb1e892c9dab5bf1c695644199272739d /fs/btrfs/extent_map.h | |
| parent | 9c9d1b4f74c5e96779e561af9b57c65607bf8a6d (diff) | |
btrfs: add helper to replace extent map range with a new extent map
We have several places that need to drop all the extent maps in a given
file range and then add a new extent map for that range. Currently they
call btrfs_drop_extent_map_range() to delete all extent maps in the range
and then keep trying to add the new extent map in a loop that keeps
retrying while the insertion of the new extent map fails with -EEXIST.
So instead of repeating this logic, add a helper to extent_map.c that
does these steps and name it btrfs_replace_extent_map_range(). Also add
a comment about why the retry loop is necessary.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/extent_map.h')
| -rw-r--r-- | fs/btrfs/extent_map.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h index 17f4a9bbee7f..ad311864272a 100644 --- a/fs/btrfs/extent_map.h +++ b/fs/btrfs/extent_map.h @@ -109,5 +109,8 @@ int btrfs_add_extent_mapping(struct btrfs_fs_info *fs_info, void btrfs_drop_extent_map_range(struct btrfs_inode *inode, u64 start, u64 end, bool skip_pinned); +int btrfs_replace_extent_map_range(struct btrfs_inode *inode, + struct extent_map *new_em, + bool modified); #endif |