diff options
Diffstat (limited to 'fs/xfs/xfs_buf_item.h')
| -rw-r--r-- | fs/xfs/xfs_buf_item.h | 118 |
1 files changed, 81 insertions, 37 deletions
diff --git a/fs/xfs/xfs_buf_item.h b/fs/xfs/xfs_buf_item.h index b6ecd2061e7c..0f1c247dc680 100644 --- a/fs/xfs/xfs_buf_item.h +++ b/fs/xfs/xfs_buf_item.h @@ -21,39 +21,23 @@ extern kmem_zone_t *xfs_buf_item_zone; /* - * This is the structure used to lay out a buf log item in the - * log. The data map describes which 128 byte chunks of the buffer - * have been logged. - * For 6.2 and beyond, this is XFS_LI_BUF. We use this to log everything. - */ -typedef struct xfs_buf_log_format { - unsigned short blf_type; /* buf log item type indicator */ - unsigned short blf_size; /* size of this item */ - ushort blf_flags; /* misc state */ - ushort blf_len; /* number of blocks in this buf */ - __int64_t blf_blkno; /* starting blkno of this buf */ - unsigned int blf_map_size; /* size of data bitmap in words */ - unsigned int blf_data_map[1];/* variable size bitmap of */ - /* regions of buffer in this item */ -} xfs_buf_log_format_t; - -/* * This flag indicates that the buffer contains on disk inodes * and requires special recovery handling. */ -#define XFS_BLF_INODE_BUF 0x1 +#define XFS_BLF_INODE_BUF (1<<0) /* * This flag indicates that the buffer should not be replayed * during recovery because its blocks are being freed. */ -#define XFS_BLF_CANCEL 0x2 +#define XFS_BLF_CANCEL (1<<1) + /* * This flag indicates that the buffer contains on disk * user or group dquots and may require special recovery handling. */ -#define XFS_BLF_UDQUOT_BUF 0x4 -#define XFS_BLF_PDQUOT_BUF 0x8 -#define XFS_BLF_GDQUOT_BUF 0x10 +#define XFS_BLF_UDQUOT_BUF (1<<2) +#define XFS_BLF_PDQUOT_BUF (1<<3) +#define XFS_BLF_GDQUOT_BUF (1<<4) #define XFS_BLF_CHUNK 128 #define XFS_BLF_SHIFT 7 @@ -61,6 +45,72 @@ typedef struct xfs_buf_log_format { #define NBWORD (NBBY * sizeof(unsigned int)) /* + * This is the structure used to lay out a buf log item in the + * log. The data map describes which 128 byte chunks of the buffer + * have been logged. + */ +#define XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD) + +typedef struct xfs_buf_log_format { + unsigned short blf_type; /* buf log item type indicator */ + unsigned short blf_size; /* size of this item */ + ushort blf_flags; /* misc state */ + ushort blf_len; /* number of blocks in this buf */ + __int64_t blf_blkno; /* starting blkno of this buf */ + unsigned int blf_map_size; /* used size of data bitmap in words */ + unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */ +} xfs_buf_log_format_t; + +/* + * All buffers now need to tell recovery where the magic number + * is so that it can verify and calculate the CRCs on the buffer correctly + * once the changes have been replayed into the buffer. + * + * The type value is held in the upper 5 bits of the blf_flags field, which is + * an unsigned 16 bit field. Hence we need to shift it 11 bits up and down. + */ +#define XFS_BLFT_BITS 5 +#define XFS_BLFT_SHIFT 11 +#define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT) + +enum xfs_blft { + XFS_BLFT_UNKNOWN_BUF = 0, + XFS_BLFT_UDQUOT_BUF, + XFS_BLFT_PDQUOT_BUF, + XFS_BLFT_GDQUOT_BUF, + XFS_BLFT_BTREE_BUF, + XFS_BLFT_AGF_BUF, + XFS_BLFT_AGFL_BUF, + XFS_BLFT_AGI_BUF, + XFS_BLFT_DINO_BUF, + XFS_BLFT_SYMLINK_BUF, + XFS_BLFT_DIR_BLOCK_BUF, + XFS_BLFT_DIR_DATA_BUF, + XFS_BLFT_DIR_FREE_BUF, + XFS_BLFT_DIR_LEAF1_BUF, + XFS_BLFT_DIR_LEAFN_BUF, + XFS_BLFT_DA_NODE_BUF, + XFS_BLFT_ATTR_LEAF_BUF, + XFS_BLFT_ATTR_RMT_BUF, + XFS_BLFT_SB_BUF, + XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS), +}; + +static inline void +xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type) +{ + ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF); + blf->blf_flags &= ~XFS_BLFT_MASK; + blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK); +} + +static inline __uint16_t +xfs_blft_from_flags(struct xfs_buf_log_format *blf) +{ + return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT; +} + +/* * buf log item flags */ #define XFS_BLI_HOLD 0x01 @@ -70,6 +120,7 @@ typedef struct xfs_buf_log_format { #define XFS_BLI_INODE_ALLOC_BUF 0x10 #define XFS_BLI_STALE_INODE 0x20 #define XFS_BLI_INODE_BUF 0x40 +#define XFS_BLI_ORDERED 0x80 #define XFS_BLI_FLAGS \ { XFS_BLI_HOLD, "HOLD" }, \ @@ -78,7 +129,8 @@ typedef struct xfs_buf_log_format { { XFS_BLI_LOGGED, "LOGGED" }, \ { XFS_BLI_INODE_ALLOC_BUF, "INODE_ALLOC" }, \ { XFS_BLI_STALE_INODE, "STALE_INODE" }, \ - { XFS_BLI_INODE_BUF, "INODE_BUF" } + { XFS_BLI_INODE_BUF, "INODE_BUF" }, \ + { XFS_BLI_ORDERED, "ORDERED" } #ifdef __KERNEL__ @@ -98,11 +150,9 @@ typedef struct xfs_buf_log_item { unsigned int bli_flags; /* misc flags */ unsigned int bli_recur; /* lock recursion count */ atomic_t bli_refcount; /* cnt of tp refs */ -#ifdef XFS_TRANS_DEBUG - char *bli_orig; /* original buffer copy */ - char *bli_logged; /* bytes logged (bitmap) */ -#endif - xfs_buf_log_format_t bli_format; /* in-log header */ + int bli_format_count; /* count of headers */ + struct xfs_buf_log_format *bli_formats; /* array of in-log header ptrs */ + struct xfs_buf_log_format __bli_format; /* embedded in-log header */ } xfs_buf_log_item_t; void xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *); @@ -115,15 +165,9 @@ void xfs_buf_attach_iodone(struct xfs_buf *, void xfs_buf_iodone_callbacks(struct xfs_buf *); void xfs_buf_iodone(struct xfs_buf *, struct xfs_log_item *); -#ifdef XFS_TRANS_DEBUG -void -xfs_buf_item_flush_log_debug( - struct xfs_buf *bp, - uint first, - uint last); -#else -#define xfs_buf_item_flush_log_debug(bp, first, last) -#endif +void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *, + enum xfs_blft); +void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp, struct xfs_buf *src_bp); #endif /* __KERNEL__ */ |