1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #ifndef __XFS_BUF_ITEM_H__ 7 #define __XFS_BUF_ITEM_H__ 8 9 /* kernel only definitions */ 10 11 struct xfs_buf; 12 struct xfs_mount; 13 14 /* buf log item flags */ 15 #define XFS_BLI_HOLD (1u << 0) 16 #define XFS_BLI_DIRTY (1u << 1) 17 #define XFS_BLI_STALE (1u << 2) 18 #define XFS_BLI_LOGGED (1u << 3) 19 #define XFS_BLI_INODE_ALLOC_BUF (1u << 4) 20 #define XFS_BLI_STALE_INODE (1u << 5) 21 #define XFS_BLI_INODE_BUF (1u << 6) 22 #define XFS_BLI_ORDERED (1u << 7) 23 24 #define XFS_BLI_FLAGS \ 25 { XFS_BLI_HOLD, "HOLD" }, \ 26 { XFS_BLI_DIRTY, "DIRTY" }, \ 27 { XFS_BLI_STALE, "STALE" }, \ 28 { XFS_BLI_LOGGED, "LOGGED" }, \ 29 { XFS_BLI_INODE_ALLOC_BUF, "INODE_ALLOC" }, \ 30 { XFS_BLI_STALE_INODE, "STALE_INODE" }, \ 31 { XFS_BLI_INODE_BUF, "INODE_BUF" }, \ 32 { XFS_BLI_ORDERED, "ORDERED" } 33 34 /* 35 * This is the in core log item structure used to track information 36 * needed to log buffers. It tracks how many times the lock has been 37 * locked, and which 128 byte chunks of the buffer are dirty. 38 */ 39 struct xfs_buf_log_item { 40 struct xfs_log_item bli_item; /* common item structure */ 41 struct xfs_buf *bli_buf; /* real buffer pointer */ 42 unsigned int bli_flags; /* misc flags */ 43 unsigned int bli_recur; /* lock recursion count */ 44 atomic_t bli_refcount; /* cnt of tp refs */ 45 int bli_format_count; /* count of headers */ 46 struct xfs_buf_log_format *bli_formats; /* array of in-log header ptrs */ 47 struct xfs_buf_log_format __bli_format; /* embedded in-log header */ 48 }; 49 50 int xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *); 51 void xfs_buf_item_done(struct xfs_buf *bp); 52 void xfs_buf_item_relse(struct xfs_buf *); 53 bool xfs_buf_item_put(struct xfs_buf_log_item *); 54 void xfs_buf_item_log(struct xfs_buf_log_item *, uint, uint); 55 bool xfs_buf_item_dirty_format(struct xfs_buf_log_item *); 56 void xfs_buf_inode_iodone(struct xfs_buf *); 57 void xfs_buf_inode_io_fail(struct xfs_buf *bp); 58 #ifdef CONFIG_XFS_QUOTA 59 void xfs_buf_dquot_iodone(struct xfs_buf *); 60 void xfs_buf_dquot_io_fail(struct xfs_buf *bp); 61 #else 62 static inline void xfs_buf_dquot_iodone(struct xfs_buf *bp) 63 { 64 } 65 static inline void xfs_buf_dquot_io_fail(struct xfs_buf *bp) 66 { 67 } 68 #endif /* CONFIG_XFS_QUOTA */ 69 void xfs_buf_iodone(struct xfs_buf *); 70 bool xfs_buf_log_check_iovec(struct xfs_log_iovec *iovec); 71 72 extern struct kmem_cache *xfs_buf_item_cache; 73 74 #endif /* __XFS_BUF_ITEM_H__ */ 75