diff options
Diffstat (limited to 'fs/btrfs/block-rsv.h')
| -rw-r--r-- | fs/btrfs/block-rsv.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/fs/btrfs/block-rsv.h b/fs/btrfs/block-rsv.h index b0bd12b8652f..1f53b967d069 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; /* @@ -101,4 +108,36 @@ 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 */ |