diff options
Diffstat (limited to 'fs/xfs/xfs_buf_item.h')
| -rw-r--r-- | fs/xfs/xfs_buf_item.h | 171 |
1 files changed, 34 insertions, 137 deletions
diff --git a/fs/xfs/xfs_buf_item.h b/fs/xfs/xfs_buf_item.h index 0f1c247dc680..3159325dd17b 100644 --- a/fs/xfs/xfs_buf_item.h +++ b/fs/xfs/xfs_buf_item.h @@ -1,126 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __XFS_BUF_ITEM_H__ #define __XFS_BUF_ITEM_H__ -extern kmem_zone_t *xfs_buf_item_zone; +/* kernel only definitions */ -/* - * 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) - -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; -} +struct xfs_buf; +struct xfs_mount; -/* - * buf log item flags - */ -#define XFS_BLI_HOLD 0x01 -#define XFS_BLI_DIRTY 0x02 -#define XFS_BLI_STALE 0x04 -#define XFS_BLI_LOGGED 0x08 -#define XFS_BLI_INODE_ALLOC_BUF 0x10 -#define XFS_BLI_STALE_INODE 0x20 -#define XFS_BLI_INODE_BUF 0x40 -#define XFS_BLI_ORDERED 0x80 +/* buf log item flags */ +#define XFS_BLI_HOLD (1u << 0) +#define XFS_BLI_DIRTY (1u << 1) +#define XFS_BLI_STALE (1u << 2) +#define XFS_BLI_LOGGED (1u << 3) +#define XFS_BLI_INODE_ALLOC_BUF (1u << 4) +#define XFS_BLI_STALE_INODE (1u << 5) +#define XFS_BLI_INODE_BUF (1u << 6) +#define XFS_BLI_ORDERED (1u << 7) #define XFS_BLI_FLAGS \ { XFS_BLI_HOLD, "HOLD" }, \ @@ -132,20 +31,13 @@ xfs_blft_from_flags(struct xfs_buf_log_format *blf) { XFS_BLI_INODE_BUF, "INODE_BUF" }, \ { XFS_BLI_ORDERED, "ORDERED" } - -#ifdef __KERNEL__ - -struct xfs_buf; -struct xfs_mount; -struct xfs_buf_log_item; - /* * This is the in core log item structure used to track information * needed to log buffers. It tracks how many times the lock has been * locked, and which 128 byte chunks of the buffer are dirty. */ -typedef struct xfs_buf_log_item { - xfs_log_item_t bli_item; /* common item structure */ +struct xfs_buf_log_item { + struct xfs_log_item bli_item; /* common item structure */ struct xfs_buf *bli_buf; /* real buffer pointer */ unsigned int bli_flags; /* misc flags */ unsigned int bli_recur; /* lock recursion count */ @@ -153,22 +45,27 @@ typedef struct xfs_buf_log_item { 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 *); -void xfs_buf_item_relse(struct xfs_buf *); -void xfs_buf_item_log(xfs_buf_log_item_t *, uint, uint); -uint xfs_buf_item_dirty(xfs_buf_log_item_t *); -void xfs_buf_attach_iodone(struct xfs_buf *, - void(*)(struct xfs_buf *, xfs_log_item_t *), - xfs_log_item_t *); -void xfs_buf_iodone_callbacks(struct xfs_buf *); -void xfs_buf_iodone(struct xfs_buf *, struct xfs_log_item *); +int xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *); +void xfs_buf_item_done(struct xfs_buf *bp); +void xfs_buf_item_put(struct xfs_buf_log_item *bip); +void xfs_buf_item_log(struct xfs_buf_log_item *, uint, uint); +bool xfs_buf_item_dirty_format(struct xfs_buf_log_item *); +void xfs_buf_inode_iodone(struct xfs_buf *); +#ifdef CONFIG_XFS_QUOTA +void xfs_buf_dquot_iodone(struct xfs_buf *); +#else +static inline void xfs_buf_dquot_iodone(struct xfs_buf *bp) +{ +} +#endif /* CONFIG_XFS_QUOTA */ +void xfs_buf_iodone(struct xfs_buf *); +bool xfs_buf_log_check_iovec(struct kvec *iovec); -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); +unsigned int xfs_buf_inval_log_space(unsigned int map_count, + unsigned int blocksize); -#endif /* __KERNEL__ */ +extern struct kmem_cache *xfs_buf_item_cache; #endif /* __XFS_BUF_ITEM_H__ */ |