diff options
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 7007c7974a2e..cb786a25a926 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1090,6 +1090,13 @@ struct btrfs_fs_info { struct btrfs_commit_stats commit_stats; /* + * Last generation where we dropped a non-relocation root. + * Use btrfs_set_last_root_drop_gen() and btrfs_get_last_root_drop_gen() + * to change it and to read it, respectively. + */ + u64 last_root_drop_gen; + + /* * Annotations for transaction events (structures are empty when * compiled without lockdep). */ @@ -1113,6 +1120,17 @@ struct btrfs_fs_info { #endif }; +static inline void btrfs_set_last_root_drop_gen(struct btrfs_fs_info *fs_info, + u64 gen) +{ + WRITE_ONCE(fs_info->last_root_drop_gen, gen); +} + +static inline u64 btrfs_get_last_root_drop_gen(const struct btrfs_fs_info *fs_info) +{ + return READ_ONCE(fs_info->last_root_drop_gen); +} + static inline struct btrfs_fs_info *btrfs_sb(struct super_block *sb) { return sb->s_fs_info; |