xfs: split out buf log item format definitions
Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Mark Tinguely <tinguely@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
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2 changed files with 100 additions and 97 deletions
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@ -18,101 +18,9 @@
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#ifndef __XFS_BUF_ITEM_H__
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#ifndef __XFS_BUF_ITEM_H__
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#define __XFS_BUF_ITEM_H__
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#define __XFS_BUF_ITEM_H__
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extern kmem_zone_t *xfs_buf_item_zone;
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/* kernel only definitions */
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/*
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/* buf log item flags */
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* This flag indicates that the buffer contains on disk inodes
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* and requires special recovery handling.
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*/
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#define XFS_BLF_INODE_BUF (1<<0)
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/*
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* This flag indicates that the buffer should not be replayed
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* during recovery because its blocks are being freed.
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*/
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#define XFS_BLF_CANCEL (1<<1)
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/*
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* This flag indicates that the buffer contains on disk
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* user or group dquots and may require special recovery handling.
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*/
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#define XFS_BLF_UDQUOT_BUF (1<<2)
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#define XFS_BLF_PDQUOT_BUF (1<<3)
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#define XFS_BLF_GDQUOT_BUF (1<<4)
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#define XFS_BLF_CHUNK 128
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#define XFS_BLF_SHIFT 7
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#define BIT_TO_WORD_SHIFT 5
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#define NBWORD (NBBY * sizeof(unsigned int))
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/*
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* This is the structure used to lay out a buf log item in the
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* log. The data map describes which 128 byte chunks of the buffer
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* have been logged.
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*/
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#define XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD)
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typedef struct xfs_buf_log_format {
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unsigned short blf_type; /* buf log item type indicator */
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unsigned short blf_size; /* size of this item */
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ushort blf_flags; /* misc state */
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ushort blf_len; /* number of blocks in this buf */
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__int64_t blf_blkno; /* starting blkno of this buf */
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unsigned int blf_map_size; /* used size of data bitmap in words */
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unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */
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} xfs_buf_log_format_t;
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/*
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* All buffers now need to tell recovery where the magic number
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* is so that it can verify and calculate the CRCs on the buffer correctly
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* once the changes have been replayed into the buffer.
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*
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* The type value is held in the upper 5 bits of the blf_flags field, which is
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* an unsigned 16 bit field. Hence we need to shift it 11 bits up and down.
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*/
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#define XFS_BLFT_BITS 5
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#define XFS_BLFT_SHIFT 11
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#define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT)
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enum xfs_blft {
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XFS_BLFT_UNKNOWN_BUF = 0,
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XFS_BLFT_UDQUOT_BUF,
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XFS_BLFT_PDQUOT_BUF,
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XFS_BLFT_GDQUOT_BUF,
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XFS_BLFT_BTREE_BUF,
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XFS_BLFT_AGF_BUF,
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XFS_BLFT_AGFL_BUF,
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XFS_BLFT_AGI_BUF,
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XFS_BLFT_DINO_BUF,
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XFS_BLFT_SYMLINK_BUF,
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XFS_BLFT_DIR_BLOCK_BUF,
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XFS_BLFT_DIR_DATA_BUF,
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XFS_BLFT_DIR_FREE_BUF,
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XFS_BLFT_DIR_LEAF1_BUF,
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XFS_BLFT_DIR_LEAFN_BUF,
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XFS_BLFT_DA_NODE_BUF,
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XFS_BLFT_ATTR_LEAF_BUF,
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XFS_BLFT_ATTR_RMT_BUF,
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XFS_BLFT_SB_BUF,
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XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS),
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};
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static inline void
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xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type)
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{
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ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF);
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blf->blf_flags &= ~XFS_BLFT_MASK;
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blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK);
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}
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static inline __uint16_t
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xfs_blft_from_flags(struct xfs_buf_log_format *blf)
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{
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return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT;
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}
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/*
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* buf log item flags
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*/
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#define XFS_BLI_HOLD 0x01
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#define XFS_BLI_HOLD 0x01
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#define XFS_BLI_DIRTY 0x02
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#define XFS_BLI_DIRTY 0x02
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#define XFS_BLI_STALE 0x04
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#define XFS_BLI_STALE 0x04
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@ -133,8 +41,6 @@ xfs_blft_from_flags(struct xfs_buf_log_format *blf)
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{ XFS_BLI_ORDERED, "ORDERED" }
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{ XFS_BLI_ORDERED, "ORDERED" }
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#ifdef __KERNEL__
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struct xfs_buf;
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struct xfs_buf;
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struct xfs_mount;
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struct xfs_mount;
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struct xfs_buf_log_item;
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struct xfs_buf_log_item;
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@ -169,6 +75,6 @@ void xfs_trans_buf_set_type(struct xfs_trans *, struct xfs_buf *,
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enum xfs_blft);
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enum xfs_blft);
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void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp, struct xfs_buf *src_bp);
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void xfs_trans_buf_copy_type(struct xfs_buf *dst_bp, struct xfs_buf *src_bp);
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#endif /* __KERNEL__ */
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extern kmem_zone_t *xfs_buf_item_zone;
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#endif /* __XFS_BUF_ITEM_H__ */
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#endif /* __XFS_BUF_ITEM_H__ */
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@ -364,4 +364,101 @@ static inline uint xfs_icdinode_size(int version)
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return sizeof(struct xfs_icdinode);
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return sizeof(struct xfs_icdinode);
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return offsetof(struct xfs_icdinode, di_next_unlinked);
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return offsetof(struct xfs_icdinode, di_next_unlinked);
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}
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}
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/*
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* Buffer Log Format defintions
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*
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* These are the physical dirty bitmap defintions for the log format structure.
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*/
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#define XFS_BLF_CHUNK 128
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#define XFS_BLF_SHIFT 7
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#define BIT_TO_WORD_SHIFT 5
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#define NBWORD (NBBY * sizeof(unsigned int))
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/*
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* This flag indicates that the buffer contains on disk inodes
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* and requires special recovery handling.
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*/
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#define XFS_BLF_INODE_BUF (1<<0)
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/*
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* This flag indicates that the buffer should not be replayed
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* during recovery because its blocks are being freed.
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*/
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#define XFS_BLF_CANCEL (1<<1)
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/*
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* This flag indicates that the buffer contains on disk
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* user or group dquots and may require special recovery handling.
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*/
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#define XFS_BLF_UDQUOT_BUF (1<<2)
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#define XFS_BLF_PDQUOT_BUF (1<<3)
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#define XFS_BLF_GDQUOT_BUF (1<<4)
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/*
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* This is the structure used to lay out a buf log item in the
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* log. The data map describes which 128 byte chunks of the buffer
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* have been logged.
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*/
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#define XFS_BLF_DATAMAP_SIZE ((XFS_MAX_BLOCKSIZE / XFS_BLF_CHUNK) / NBWORD)
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typedef struct xfs_buf_log_format {
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unsigned short blf_type; /* buf log item type indicator */
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unsigned short blf_size; /* size of this item */
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ushort blf_flags; /* misc state */
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ushort blf_len; /* number of blocks in this buf */
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__int64_t blf_blkno; /* starting blkno of this buf */
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unsigned int blf_map_size; /* used size of data bitmap in words */
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unsigned int blf_data_map[XFS_BLF_DATAMAP_SIZE]; /* dirty bitmap */
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} xfs_buf_log_format_t;
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/*
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* All buffers now need to tell recovery where the magic number
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* is so that it can verify and calculate the CRCs on the buffer correctly
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* once the changes have been replayed into the buffer.
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*
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* The type value is held in the upper 5 bits of the blf_flags field, which is
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* an unsigned 16 bit field. Hence we need to shift it 11 bits up and down.
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*/
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#define XFS_BLFT_BITS 5
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#define XFS_BLFT_SHIFT 11
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#define XFS_BLFT_MASK (((1 << XFS_BLFT_BITS) - 1) << XFS_BLFT_SHIFT)
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enum xfs_blft {
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XFS_BLFT_UNKNOWN_BUF = 0,
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XFS_BLFT_UDQUOT_BUF,
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XFS_BLFT_PDQUOT_BUF,
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XFS_BLFT_GDQUOT_BUF,
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XFS_BLFT_BTREE_BUF,
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XFS_BLFT_AGF_BUF,
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XFS_BLFT_AGFL_BUF,
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XFS_BLFT_AGI_BUF,
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XFS_BLFT_DINO_BUF,
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XFS_BLFT_SYMLINK_BUF,
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XFS_BLFT_DIR_BLOCK_BUF,
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XFS_BLFT_DIR_DATA_BUF,
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XFS_BLFT_DIR_FREE_BUF,
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XFS_BLFT_DIR_LEAF1_BUF,
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XFS_BLFT_DIR_LEAFN_BUF,
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XFS_BLFT_DA_NODE_BUF,
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XFS_BLFT_ATTR_LEAF_BUF,
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XFS_BLFT_ATTR_RMT_BUF,
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XFS_BLFT_SB_BUF,
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XFS_BLFT_MAX_BUF = (1 << XFS_BLFT_BITS),
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};
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static inline void
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xfs_blft_to_flags(struct xfs_buf_log_format *blf, enum xfs_blft type)
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{
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ASSERT(type > XFS_BLFT_UNKNOWN_BUF && type < XFS_BLFT_MAX_BUF);
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blf->blf_flags &= ~XFS_BLFT_MASK;
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blf->blf_flags |= ((type << XFS_BLFT_SHIFT) & XFS_BLFT_MASK);
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}
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static inline __uint16_t
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xfs_blft_from_flags(struct xfs_buf_log_format *blf)
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{
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return (blf->blf_flags & XFS_BLFT_MASK) >> XFS_BLFT_SHIFT;
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}
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#endif /* __XFS_LOG_FORMAT_H__ */
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#endif /* __XFS_LOG_FORMAT_H__ */
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