From: Ilya Dryomov Date: Tue, 27 Mar 2012 14:09:17 +0000 (+0300) Subject: Btrfs: add __get_block_group_index() helper X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7738a53a3a3aa8d82350280ff4bc7df9c3094123;p=mv-sheeva.git 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 --- diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index faf52e03031..c44aa968078 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,