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| author | David Sterba <dsterba@suse.com> | 2017-02-17 15:27:44 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2017-02-28 14:29:24 +0100 |
| commit | 4d53dddbec671bcb64a936a3d2b7bf1ce2252ed0 (patch) | |
| tree | 332a2d50116a1842e1b205f5137abce8ea606628 /fs/btrfs/inode.c | |
| parent | btrfs: let writepage_end_io_hook return void (diff) | |
| download | linux-4d53dddbec671bcb64a936a3d2b7bf1ce2252ed0.tar.xz linux-4d53dddbec671bcb64a936a3d2b7bf1ce2252ed0.zip | |
btrfs: document existence of extent_io ops callbacks
Some of the callbacks defined in btree_extent_io_ops and
btrfs_extent_io_ops do always exist so we don't need to check the
existence before each call. This patch just reorders the definition and
documents which are mandatory/optional.
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index b904c74f31fd..3b327c8cfb16 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -10547,10 +10547,13 @@ static const struct file_operations btrfs_dir_file_operations = { }; static const struct extent_io_ops btrfs_extent_io_ops = { - .fill_delalloc = run_delalloc_range, + /* mandatory callbacks */ .submit_bio_hook = btrfs_submit_bio_hook, - .merge_bio_hook = btrfs_merge_bio_hook, .readpage_end_io_hook = btrfs_readpage_end_io_hook, + .merge_bio_hook = btrfs_merge_bio_hook, + + /* optional callbacks */ + .fill_delalloc = run_delalloc_range, .writepage_end_io_hook = btrfs_writepage_end_io_hook, .writepage_start_hook = btrfs_writepage_start_hook, .set_bit_hook = btrfs_set_bit_hook, |