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| author | Ilya Dryomov <idryomov@gmail.com> | 2012-01-17 00:04:47 +0400 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2012-01-17 00:04:47 +0400 |
| commit | ed25e9b26f898d8d63ae4a836489f1923534143b (patch) | |
| tree | 89ee253d15ef46b430de0435c068b66267ce829b | |
| parent | f43ffb60fd94e98be02780944e182ade6653b916 (diff) | |
| download | linux-ed25e9b26f898d8d63ae4a836489f1923534143b.tar.xz | |
Btrfs: profiles filter
Select chunks based on a given profile mask.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| -rw-r--r-- | fs/btrfs/volumes.c | 24 | ||||
| -rw-r--r-- | fs/btrfs/volumes.h | 4 |
2 files changed, 28 insertions, 0 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 91bbf6e774c0..447bd422d867 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2102,6 +2102,24 @@ static void unset_balance_control(struct btrfs_fs_info *fs_info) kfree(bctl); } +/* + * Balance filters. Return 1 if chunk should be filtered out + * (should not be balanced). + */ +static int chunk_profiles_filter(u64 chunk_profile, + struct btrfs_balance_args *bargs) +{ + chunk_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK; + + if (chunk_profile == 0) + chunk_profile = BTRFS_AVAIL_ALLOC_BIT_SINGLE; + + if (bargs->profiles & chunk_profile) + return 0; + + return 1; +} + static int should_balance_chunk(struct btrfs_root *root, struct extent_buffer *leaf, struct btrfs_chunk *chunk, u64 chunk_offset) @@ -2123,6 +2141,12 @@ static int should_balance_chunk(struct btrfs_root *root, else if (chunk_type & BTRFS_BLOCK_GROUP_METADATA) bargs = &bctl->meta; + /* profiles filter */ + if ((bargs->flags & BTRFS_BALANCE_ARGS_PROFILES) && + chunk_profiles_filter(chunk_type, bargs)) { + return 0; + } + return 1; } diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index 003e54216069..fb20d7740440 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -196,6 +196,10 @@ struct map_lookup { #define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \ BTRFS_BALANCE_SYSTEM | \ BTRFS_BALANCE_METADATA) +/* + * Balance filters + */ +#define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0) struct btrfs_balance_args; struct btrfs_balance_control { |