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| author | Omar Sandoval <osandov@fb.com> | 2015-09-29 20:50:38 -0700 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2015-12-17 12:16:47 -0800 |
| commit | 70f6d82ec73c3ae2d3adc6853c5bebcd73610097 (patch) | |
| tree | c9f062c00713267ecd5e2e62fc1dd41063fa1426 /fs/btrfs/ctree.h | |
| parent | 1e144fb8f4a4d6d6d88c58f87e4366e3cd02ab72 (diff) | |
| download | linux-70f6d82ec73c3ae2d3adc6853c5bebcd73610097.tar.gz | |
Btrfs: add free space tree mount option
Now we can finally hook up everything so we can actually use free space tree. The free space tree is enabled by passing the space_cache=v2 mount option. On the first mount with the this option set, the free space tree will be created and the FREE_SPACE_TREE read-only compat bit will be set. Any time the filesystem is mounted from then on, we must use the free space tree. The clear_cache option will also clear the free space tree. Signed-off-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 0888c3e2cc7d..ed610f9c04b2 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -531,7 +531,10 @@ struct btrfs_super_block { #define BTRFS_FEATURE_COMPAT_SUPP 0ULL #define BTRFS_FEATURE_COMPAT_SAFE_SET 0ULL #define BTRFS_FEATURE_COMPAT_SAFE_CLEAR 0ULL -#define BTRFS_FEATURE_COMPAT_RO_SUPP 0ULL + +#define BTRFS_FEATURE_COMPAT_RO_SUPP \ + (BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE) + #define BTRFS_FEATURE_COMPAT_RO_SAFE_SET 0ULL #define BTRFS_FEATURE_COMPAT_RO_SAFE_CLEAR 0ULL @@ -2203,6 +2206,7 @@ struct btrfs_ioctl_defrag_range_args { #define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21) #define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22) #define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23) +#define BTRFS_MOUNT_FREE_SPACE_TREE (1 << 24) #define BTRFS_DEFAULT_COMMIT_INTERVAL (30) #define BTRFS_DEFAULT_MAX_INLINE (8192) @@ -3744,6 +3748,7 @@ static inline void free_fs_info(struct btrfs_fs_info *fs_info) kfree(fs_info->csum_root); kfree(fs_info->quota_root); kfree(fs_info->uuid_root); + kfree(fs_info->free_space_root); kfree(fs_info->super_copy); kfree(fs_info->super_for_commit); security_free_mnt_opts(&fs_info->security_opts); |