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| author | Ilya Dryomov <idryomov@gmail.com> | 2012-03-27 14:09:16 (GMT) |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2012-03-27 14:09:16 (GMT) |
| commit | 899c81eac890bcfa5f3636f4c43f68e8393ac1f8 (patch) | |
| tree | f2a202c25edd6a58a4c0018db03617b6b0c46fc8 /fs/btrfs/ctree.h | |
| parent | e3176ca2769e420f64eba4b093bbddea6d7a89c3 (diff) | |
| download | linux-899c81eac890bcfa5f3636f4c43f68e8393ac1f8.tar.xz | |
Btrfs: add wrappers for working with alloc profiles
Add functions to abstract the conversion between chunk and extended
allocation profile formats and switch everybody to use them.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index c2e17cd..aba7832 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -849,6 +849,21 @@ struct btrfs_csum_item { */ #define BTRFS_AVAIL_ALLOC_BIT_SINGLE (1ULL << 48) +#define BTRFS_EXTENDED_PROFILE_MASK (BTRFS_BLOCK_GROUP_PROFILE_MASK | \ + BTRFS_AVAIL_ALLOC_BIT_SINGLE) + +static inline u64 chunk_to_extended(u64 flags) +{ + if ((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) == 0) + flags |= BTRFS_AVAIL_ALLOC_BIT_SINGLE; + + return flags; +} +static inline u64 extended_to_chunk(u64 flags) +{ + return flags & ~BTRFS_AVAIL_ALLOC_BIT_SINGLE; +} + struct btrfs_block_group_item { __le64 used; __le64 chunk_objectid; |