xfs: split out buf log item format definitions (a8da0da2) · Commits · e / devices / android_kernel_oneplus_sm7250

fs/xfs/xfs_buf_item.h

+3 −97

Original line number	Diff line number	Diff line
		@@ -18,101 +18,9 @@
		#ifndef __XFS_BUF_ITEM_H__
		#define __XFS_BUF_ITEM_H__

		extern kmem_zone_t *xfs_buf_item_zone;

		/*
		* This flag indicates that the buffer contains on disk inodes
		* and requires special recovery handling.
		*/
		#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 (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 (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
		#define BIT_TO_WORD_SHIFT 5
		#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)
		/* kernel only definitions */

		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
		*/
		/* buf log item flags */
		#define XFS_BLI_HOLD 0x01
		#define XFS_BLI_DIRTY 0x02
		#define XFS_BLI_STALE 0x04
		@@ -133,8 +41,6 @@ xfs_blft_from_flags(struct xfs_buf_log_format *blf)
		{ XFS_BLI_ORDERED, "ORDERED" }


		#ifdef __KERNEL__

		struct xfs_buf;
		struct xfs_mount;
		struct xfs_buf_log_item;
		@@ -169,6 +75,6 @@ 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__ */
		extern kmem_zone_t *xfs_buf_item_zone;

		#endif /* __XFS_BUF_ITEM_H__ */

fs/xfs/xfs_log_format.h

+97 −0

Original line number	Diff line number	Diff line
		@@ -364,4 +364,101 @@ static inline uint xfs_icdinode_size(int version)
		return sizeof(struct xfs_icdinode);
		return offsetof(struct xfs_icdinode, di_next_unlinked);
		}

		/*
		* Buffer Log Format defintions
		*
		* These are the physical dirty bitmap defintions for the log format structure.
		*/
		#define XFS_BLF_CHUNK 128
		#define XFS_BLF_SHIFT 7
		#define BIT_TO_WORD_SHIFT 5
		#define NBWORD (NBBY * sizeof(unsigned int))

		/*
		* This flag indicates that the buffer contains on disk inodes
		* and requires special recovery handling.
		*/
		#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 (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 (1<<2)
		#define XFS_BLF_PDQUOT_BUF (1<<3)
		#define XFS_BLF_GDQUOT_BUF (1<<4)

		/*
		* 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;
		}

		#endif /* __XFS_LOG_FORMAT_H__ */