diff options
Diffstat (limited to 'fs/xfs/xfs_buf.h')
| -rw-r--r-- | fs/xfs/xfs_buf.h | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h index 80e06eecaf56..d0b065a9a9f0 100644 --- a/fs/xfs/xfs_buf.h +++ b/fs/xfs/xfs_buf.h @@ -36,7 +36,6 @@ struct xfs_buf; #define _XBF_LOGRECOVERY (1u << 18)/* log recovery buffer */ /* flags used only internally */ -#define _XBF_PAGES (1u << 20)/* backed by refcounted pages */ #define _XBF_KMEM (1u << 21)/* backed by heap memory */ #define _XBF_DELWRI_Q (1u << 22)/* buffer on a delwri queue */ @@ -48,7 +47,6 @@ struct xfs_buf; #define XBF_LIVESCAN (1u << 28) #define XBF_INCORE (1u << 29)/* lookup only, return if found in cache */ #define XBF_TRYLOCK (1u << 30)/* lock requested, but do not wait */ -#define XBF_UNMAPPED (1u << 31)/* do not map the buffer */ typedef unsigned int xfs_buf_flags_t; @@ -62,14 +60,12 @@ typedef unsigned int xfs_buf_flags_t; { XBF_STALE, "STALE" }, \ { XBF_WRITE_FAIL, "WRITE_FAIL" }, \ { _XBF_LOGRECOVERY, "LOG_RECOVERY" }, \ - { _XBF_PAGES, "PAGES" }, \ { _XBF_KMEM, "KMEM" }, \ { _XBF_DELWRI_Q, "DELWRI_Q" }, \ /* The following interface flags should never be set */ \ { XBF_LIVESCAN, "LIVESCAN" }, \ { XBF_INCORE, "INCORE" }, \ - { XBF_TRYLOCK, "TRYLOCK" }, \ - { XBF_UNMAPPED, "UNMAPPED" } + { XBF_TRYLOCK, "TRYLOCK" } /* * Internal state flags. @@ -124,8 +120,6 @@ struct xfs_buftarg { struct xfs_buf_cache bt_cache[]; }; -#define XB_PAGES 2 - struct xfs_buf_map { xfs_daddr_t bm_bn; /* block number for I/O */ int bm_len; /* size of I/O */ @@ -187,15 +181,10 @@ struct xfs_buf { struct xfs_buf_log_item *b_log_item; struct list_head b_li_list; /* Log items list head */ struct xfs_trans *b_transp; - struct page **b_pages; /* array of page pointers */ - struct page *b_page_array[XB_PAGES]; /* inline pages */ struct xfs_buf_map *b_maps; /* compound buffer map */ struct xfs_buf_map __b_map; /* inline compound buffer map */ int b_map_count; atomic_t b_pin_count; /* pin count */ - unsigned int b_page_count; /* size of page array */ - unsigned int b_offset; /* page offset of b_addr, - only for _XBF_KMEM buffers */ int b_error; /* error code on I/O */ void (*b_iodone)(struct xfs_buf *bp); @@ -284,9 +273,9 @@ xfs_buf_readahead( } int xfs_buf_get_uncached(struct xfs_buftarg *target, size_t numblks, - xfs_buf_flags_t flags, struct xfs_buf **bpp); + struct xfs_buf **bpp); int xfs_buf_read_uncached(struct xfs_buftarg *target, xfs_daddr_t daddr, - size_t numblks, xfs_buf_flags_t flags, struct xfs_buf **bpp, + size_t numblks, struct xfs_buf **bpp, const struct xfs_buf_ops *ops); int _xfs_buf_read(struct xfs_buf *bp); void xfs_buf_hold(struct xfs_buf *bp); @@ -315,12 +304,20 @@ extern void __xfs_buf_ioerror(struct xfs_buf *bp, int error, #define xfs_buf_ioerror(bp, err) __xfs_buf_ioerror((bp), (err), __this_address) extern void xfs_buf_ioerror_alert(struct xfs_buf *bp, xfs_failaddr_t fa); void xfs_buf_ioend_fail(struct xfs_buf *); -void xfs_buf_zero(struct xfs_buf *bp, size_t boff, size_t bsize); void __xfs_buf_mark_corrupt(struct xfs_buf *bp, xfs_failaddr_t fa); #define xfs_buf_mark_corrupt(bp) __xfs_buf_mark_corrupt((bp), __this_address) /* Buffer Utility Routines */ -extern void *xfs_buf_offset(struct xfs_buf *, size_t); +static inline void *xfs_buf_offset(struct xfs_buf *bp, size_t offset) +{ + return bp->b_addr + offset; +} + +static inline void xfs_buf_zero(struct xfs_buf *bp, size_t boff, size_t bsize) +{ + memset(bp->b_addr + boff, 0, bsize); +} + extern void xfs_buf_stale(struct xfs_buf *bp); /* Delayed Write Buffer Routines */ |