diff options
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_buf.c | 17 | ||||
| -rw-r--r-- | fs/xfs/xfs_buf.h | 5 |
2 files changed, 8 insertions, 14 deletions
diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index d3a1974..854b27a 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -196,7 +196,7 @@ xfs_buf_alloc( sema_init(&bp->b_sema, 0); /* held, no waiters */ XB_SET_OWNER(bp); bp->b_target = target; - bp->b_file_offset = blkno << BBSHIFT; + /* * Set buffer_length and count_desired to the same value initially. * I/O routines should use count_desired, which will be the same in @@ -337,8 +337,8 @@ xfs_buf_allocate_memory( } use_alloc_page: - end = bp->b_file_offset + bp->b_buffer_length; - page_count = xfs_buf_btoc(end) - xfs_buf_btoct(bp->b_file_offset); + end = BBTOB(bp->b_bn) + bp->b_buffer_length; + page_count = xfs_buf_btoc(end) - xfs_buf_btoct(BBTOB(bp->b_bn)); error = _xfs_buf_get_pages(bp, page_count, flags); if (unlikely(error)) return error; @@ -439,19 +439,17 @@ _xfs_buf_find( xfs_buf_flags_t flags, xfs_buf_t *new_bp) { - xfs_off_t offset; size_t numbytes; struct xfs_perag *pag; struct rb_node **rbp; struct rb_node *parent; xfs_buf_t *bp; - offset = BBTOB(blkno); numbytes = BBTOB(numblks); /* Check for IOs smaller than the sector size / not sector aligned */ ASSERT(!(numbytes < (1 << btp->bt_sshift))); - ASSERT(!(offset & (xfs_off_t)btp->bt_smask)); + ASSERT(!(BBTOB(blkno) & (xfs_off_t)btp->bt_smask)); /* get tree root */ pag = xfs_perag_get(btp->bt_mount, @@ -466,13 +464,13 @@ _xfs_buf_find( parent = *rbp; bp = rb_entry(parent, struct xfs_buf, b_rbnode); - if (offset < bp->b_file_offset) + if (blkno < bp->b_bn) rbp = &(*rbp)->rb_left; - else if (offset > bp->b_file_offset) + else if (blkno > bp->b_bn) rbp = &(*rbp)->rb_right; else { /* - * found a block offset match. If the range doesn't + * found a block number match. If the range doesn't * match, the only way this is allowed is if the buffer * in the cache is stale and the transaction that made * it stale has not yet committed. i.e. we are @@ -718,7 +716,6 @@ xfs_buf_set_empty( bp->b_pages = NULL; bp->b_page_count = 0; bp->b_addr = NULL; - bp->b_file_offset = 0; bp->b_buffer_length = bp->b_count_desired = numblks << BBSHIFT; bp->b_bn = XFS_BUF_DADDR_NULL; bp->b_flags &= ~XBF_MAPPED; diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index ffd6da0..4d472e5 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -116,7 +116,7 @@ typedef struct xfs_buf { * fast-path on locking. */ struct rb_node b_rbnode; /* rbtree node */ - xfs_off_t b_file_offset; /* offset in file */ + xfs_daddr_t b_bn; /* block number for I/O */ size_t b_buffer_length;/* size of buffer in bytes */ atomic_t b_hold; /* reference count */ atomic_t b_lru_ref; /* lru reclaim ref count */ @@ -128,7 +128,6 @@ typedef struct xfs_buf { struct list_head b_list; struct xfs_perag *b_pag; /* contains rbtree root */ xfs_buftarg_t *b_target; /* buffer target (device) */ - xfs_daddr_t b_bn; /* block number for I/O */ size_t b_count_desired;/* desired transfer size */ void *b_addr; /* virtual address of buffer */ struct work_struct b_iodone_work; @@ -245,8 +244,6 @@ void xfs_buf_stale(struct xfs_buf *bp); #define XFS_BUF_ADDR(bp) ((bp)->b_bn) #define XFS_BUF_SET_ADDR(bp, bno) ((bp)->b_bn = (xfs_daddr_t)(bno)) -#define XFS_BUF_OFFSET(bp) ((bp)->b_file_offset) -#define XFS_BUF_SET_OFFSET(bp, off) ((bp)->b_file_offset = (off)) #define XFS_BUF_COUNT(bp) ((bp)->b_count_desired) #define XFS_BUF_SET_COUNT(bp, cnt) ((bp)->b_count_desired = (cnt)) #define XFS_BUF_SIZE(bp) ((bp)->b_buffer_length) |
