diff options
Diffstat (limited to 'fs/xfs/xfs_buf.h')
| -rw-r--r-- | fs/xfs/xfs_buf.h | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index 304e858d04fb..b1580644501f 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -83,6 +83,14 @@ typedef unsigned int xfs_buf_flags_t; #define XFS_BSTATE_DISPOSE (1 << 0) /* buffer being discarded */ #define XFS_BSTATE_IN_FLIGHT (1 << 1) /* I/O in flight */ +struct xfs_buf_cache { + spinlock_t bc_lock; + struct rhashtable bc_hash; +}; + +int xfs_buf_cache_init(struct xfs_buf_cache *bch); +void xfs_buf_cache_destroy(struct xfs_buf_cache *bch); + /* * The xfs_buftarg contains 2 notions of "sector size" - * @@ -96,11 +104,12 @@ typedef unsigned int xfs_buf_flags_t; * The latter is derived from the underlying device, and controls direct IO * alignment constraints. */ -typedef struct xfs_buftarg { +struct xfs_buftarg { dev_t bt_dev; struct file *bt_bdev_file; struct block_device *bt_bdev; struct dax_device *bt_daxdev; + struct file *bt_file; u64 bt_dax_part_off; struct xfs_mount *bt_mount; unsigned int bt_meta_sectorsize; @@ -114,7 +123,10 @@ typedef struct xfs_buftarg { struct percpu_counter bt_io_count; struct ratelimit_state bt_ioerror_rl; -} xfs_buftarg_t; + + /* built-in cache, if we're not using the perag one */ + struct xfs_buf_cache bt_cache[]; +}; #define XB_PAGES 2 @@ -379,4 +391,9 @@ int xfs_buf_reverify(struct xfs_buf *bp, const struct xfs_buf_ops *ops); bool xfs_verify_magic(struct xfs_buf *bp, __be32 dmagic); bool xfs_verify_magic16(struct xfs_buf *bp, __be16 dmagic); +/* for xfs_buf_mem.c only: */ +int xfs_init_buftarg(struct xfs_buftarg *btp, size_t logical_sectorsize, + const char *descr); +void xfs_destroy_buftarg(struct xfs_buftarg *btp); + #endif /* __XFS_BUF_H__ */ |