diff options
Diffstat (limited to 'fs/xfs/xfs_buf.h')
| -rw-r--r-- | fs/xfs/xfs_buf.h | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index 7c0b6a0a155..23f5642480b 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -100,6 +100,7 @@ typedef struct xfs_buftarg { struct xfs_buf; typedef void (*xfs_buf_iodone_t)(struct xfs_buf *); + #define XB_PAGES 2 struct xfs_buf_map { @@ -110,6 +111,11 @@ struct xfs_buf_map { #define DEFINE_SINGLE_BUF_MAP(map, blkno, numblk) \ struct xfs_buf_map (map) = { .bm_bn = (blkno), .bm_len = (numblk) }; +struct xfs_buf_ops { + void (*verify_read)(struct xfs_buf *); + void (*verify_write)(struct xfs_buf *); +}; + typedef struct xfs_buf { /* * first cacheline holds all the fields needed for an uncontended cache @@ -153,13 +159,13 @@ typedef struct xfs_buf { unsigned int b_page_count; /* size of page array */ unsigned int b_offset; /* page offset in first page */ unsigned short b_error; /* error code on I/O */ + const struct xfs_buf_ops *b_ops; #ifdef XFS_BUF_LOCK_TRACKING int b_last_holder; #endif } xfs_buf_t; - /* Finding and Reading Buffers */ struct xfs_buf *_xfs_buf_find(struct xfs_buftarg *target, struct xfs_buf_map *map, int nmaps, @@ -196,9 +202,11 @@ struct xfs_buf *xfs_buf_get_map(struct xfs_buftarg *target, xfs_buf_flags_t flags); struct xfs_buf *xfs_buf_read_map(struct xfs_buftarg *target, struct xfs_buf_map *map, int nmaps, - xfs_buf_flags_t flags); + xfs_buf_flags_t flags, + const struct xfs_buf_ops *ops); void xfs_buf_readahead_map(struct xfs_buftarg *target, - struct xfs_buf_map *map, int nmaps); + struct xfs_buf_map *map, int nmaps, + const struct xfs_buf_ops *ops); static inline struct xfs_buf * xfs_buf_get( @@ -216,20 +224,22 @@ xfs_buf_read( struct xfs_buftarg *target, xfs_daddr_t blkno, size_t numblks, - xfs_buf_flags_t flags) + xfs_buf_flags_t flags, + const struct xfs_buf_ops *ops) { DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); - return xfs_buf_read_map(target, &map, 1, flags); + return xfs_buf_read_map(target, &map, 1, flags, ops); } static inline void xfs_buf_readahead( struct xfs_buftarg *target, xfs_daddr_t blkno, - size_t numblks) + size_t numblks, + const struct xfs_buf_ops *ops) { DEFINE_SINGLE_BUF_MAP(map, blkno, numblks); - return xfs_buf_readahead_map(target, &map, 1); + return xfs_buf_readahead_map(target, &map, 1, ops); } struct xfs_buf *xfs_buf_get_empty(struct xfs_buftarg *target, size_t numblks); @@ -239,7 +249,8 @@ int xfs_buf_associate_memory(struct xfs_buf *bp, void *mem, size_t length); struct xfs_buf *xfs_buf_get_uncached(struct xfs_buftarg *target, size_t numblks, int flags); struct xfs_buf *xfs_buf_read_uncached(struct xfs_buftarg *target, - xfs_daddr_t daddr, size_t numblks, int flags); + xfs_daddr_t daddr, size_t numblks, int flags, + const struct xfs_buf_ops *ops); void xfs_buf_hold(struct xfs_buf *bp); /* Releasing Buffers */ |