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| author | Ilya Dryomov <idryomov@gmail.com> | 2012-03-27 17:09:17 +0300 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2012-03-27 17:09:17 +0300 |
| commit | 7738a53a3a3aa8d82350280ff4bc7df9c3094123 (patch) | |
| tree | f51ea4f52ba5bc6688b43737567d6a991235da28 /fs | |
| parent | fc67c450837ec034174060a25889a55eed741a1d (diff) | |
| download | linux-hpc-7738a53a3a3aa8d82350280ff4bc7df9c3094123.tar.gz | |
Btrfs: add __get_block_group_index() helper
Add __get_block_group_index() helper to be able to derive block group
index from an arbitary set of flags. Implement get_block_group_index()
in terms of it.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index faf52e03031578..c44aa9680789b9 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -5248,22 +5248,29 @@ wait_block_group_cache_done(struct btrfs_block_group_cache *cache) return 0; } -static int get_block_group_index(struct btrfs_block_group_cache *cache) +static int __get_block_group_index(u64 flags) { int index; - if (cache->flags & BTRFS_BLOCK_GROUP_RAID10) + + if (flags & BTRFS_BLOCK_GROUP_RAID10) index = 0; - else if (cache->flags & BTRFS_BLOCK_GROUP_RAID1) + else if (flags & BTRFS_BLOCK_GROUP_RAID1) index = 1; - else if (cache->flags & BTRFS_BLOCK_GROUP_DUP) + else if (flags & BTRFS_BLOCK_GROUP_DUP) index = 2; - else if (cache->flags & BTRFS_BLOCK_GROUP_RAID0) + else if (flags & BTRFS_BLOCK_GROUP_RAID0) index = 3; else index = 4; + return index; } +static int get_block_group_index(struct btrfs_block_group_cache *cache) +{ + return __get_block_group_index(cache->flags); +} + enum btrfs_loop_type { LOOP_CACHING_NOWAIT = 0, LOOP_CACHING_WAIT = 1, |