diff options
Diffstat (limited to 'fs/btrfs/block-rsv.h')
| -rw-r--r-- | fs/btrfs/block-rsv.h | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/fs/btrfs/block-rsv.h b/fs/btrfs/block-rsv.h index b0bd12b8652f..79ae9d05cd91 100644 --- a/fs/btrfs/block-rsv.h +++ b/fs/btrfs/block-rsv.h @@ -3,8 +3,15 @@ #ifndef BTRFS_BLOCK_RSV_H #define BTRFS_BLOCK_RSV_H +#include <linux/types.h> +#include <linux/compiler.h> +#include <linux/spinlock.h> + struct btrfs_trans_handle; struct btrfs_root; +struct btrfs_space_info; +struct btrfs_block_rsv; +struct btrfs_fs_info; enum btrfs_reserve_flush_enum; /* @@ -17,6 +24,7 @@ enum btrfs_rsv_type { BTRFS_BLOCK_RSV_CHUNK, BTRFS_BLOCK_RSV_DELOPS, BTRFS_BLOCK_RSV_DELREFS, + BTRFS_BLOCK_RSV_TREELOG, BTRFS_BLOCK_RSV_EMPTY, BTRFS_BLOCK_RSV_TEMP, }; @@ -82,7 +90,7 @@ void btrfs_release_global_block_rsv(struct btrfs_fs_info *fs_info); struct btrfs_block_rsv *btrfs_use_block_rsv(struct btrfs_trans_handle *trans, struct btrfs_root *root, u32 blocksize); -int btrfs_check_trunc_cache_free_space(struct btrfs_fs_info *fs_info, +int btrfs_check_trunc_cache_free_space(const struct btrfs_fs_info *fs_info, struct btrfs_block_rsv *rsv); static inline void btrfs_unuse_block_rsv(struct btrfs_fs_info *fs_info, struct btrfs_block_rsv *block_rsv, @@ -101,4 +109,36 @@ static inline bool btrfs_block_rsv_full(const struct btrfs_block_rsv *rsv) return data_race(rsv->full); } +/* + * Get the reserved mount of a block reserve in a context where getting a stale + * value is acceptable, instead of accessing it directly and trigger data race + * warning from KCSAN. + */ +static inline u64 btrfs_block_rsv_reserved(struct btrfs_block_rsv *rsv) +{ + u64 ret; + + spin_lock(&rsv->lock); + ret = rsv->reserved; + spin_unlock(&rsv->lock); + + return ret; +} + +/* + * Get the size of a block reserve in a context where getting a stale value is + * acceptable, instead of accessing it directly and trigger data race warning + * from KCSAN. + */ +static inline u64 btrfs_block_rsv_size(struct btrfs_block_rsv *rsv) +{ + u64 ret; + + spin_lock(&rsv->lock); + ret = rsv->size; + spin_unlock(&rsv->lock); + + return ret; +} + #endif /* BTRFS_BLOCK_RSV_H */ |