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| author | Chris Mason <chris.mason@oracle.com> | 2008-09-29 21:18:18 +0200 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-29 21:18:18 +0200 |
| commit | d352ac68148b69937d39ca5d48bcc4478e118dbf (patch) | |
| tree | 7951dd7311999d9e77766acdc7f8e93de97874d8 /fs/btrfs/ref-cache.h | |
| parent | Btrfs: drop WARN_ON from btrfs_add_leaf_ref (diff) | |
| download | linux-d352ac68148b69937d39ca5d48bcc4478e118dbf.tar.xz linux-d352ac68148b69937d39ca5d48bcc4478e118dbf.zip | |
Btrfs: add and improve comments
This improves the comments at the top of many functions. It didn't
dive into the guts of functions because I was trying to
avoid merging problems with the new allocator and back reference work.
extent-tree.c and volumes.c were both skipped, and there is definitely
more work todo in cleaning and commenting the code.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/ref-cache.h')
| -rw-r--r-- | fs/btrfs/ref-cache.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/ref-cache.h b/fs/btrfs/ref-cache.h index 617564787f52..16f3183d7c59 100644 --- a/fs/btrfs/ref-cache.h +++ b/fs/btrfs/ref-cache.h @@ -19,8 +19,11 @@ #define __REFCACHE__ struct btrfs_extent_info { + /* bytenr and num_bytes find the extent in the extent allocation tree */ u64 bytenr; u64 num_bytes; + + /* objectid and offset find the back reference for the file */ u64 objectid; u64 offset; }; |