10b61f8a4SDave Chinner // SPDX-License-Identifier: GPL-2.0 21da177e4SLinus Torvalds /* 37b718769SNathan Scott * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. 47b718769SNathan Scott * All Rights Reserved. 51da177e4SLinus Torvalds */ 61da177e4SLinus Torvalds #ifndef __XFS_BUF_ITEM_H__ 71da177e4SLinus Torvalds #define __XFS_BUF_ITEM_H__ 81da177e4SLinus Torvalds 9a8da0da2SDave Chinner /* kernel only definitions */ 10a8272ce0SDavid Chinner 11a8da0da2SDave Chinner /* buf log item flags */ 121da177e4SLinus Torvalds #define XFS_BLI_HOLD 0x01 131da177e4SLinus Torvalds #define XFS_BLI_DIRTY 0x02 141da177e4SLinus Torvalds #define XFS_BLI_STALE 0x04 151da177e4SLinus Torvalds #define XFS_BLI_LOGGED 0x08 161da177e4SLinus Torvalds #define XFS_BLI_INODE_ALLOC_BUF 0x10 171da177e4SLinus Torvalds #define XFS_BLI_STALE_INODE 0x20 18ccf7c23fSDave Chinner #define XFS_BLI_INODE_BUF 0x40 195f6bed76SDave Chinner #define XFS_BLI_ORDERED 0x80 201da177e4SLinus Torvalds 210b1b213fSChristoph Hellwig #define XFS_BLI_FLAGS \ 220b1b213fSChristoph Hellwig { XFS_BLI_HOLD, "HOLD" }, \ 230b1b213fSChristoph Hellwig { XFS_BLI_DIRTY, "DIRTY" }, \ 240b1b213fSChristoph Hellwig { XFS_BLI_STALE, "STALE" }, \ 250b1b213fSChristoph Hellwig { XFS_BLI_LOGGED, "LOGGED" }, \ 260b1b213fSChristoph Hellwig { XFS_BLI_INODE_ALLOC_BUF, "INODE_ALLOC" }, \ 27ccf7c23fSDave Chinner { XFS_BLI_STALE_INODE, "STALE_INODE" }, \ 285f6bed76SDave Chinner { XFS_BLI_INODE_BUF, "INODE_BUF" }, \ 295f6bed76SDave Chinner { XFS_BLI_ORDERED, "ORDERED" } 300b1b213fSChristoph Hellwig 311da177e4SLinus Torvalds 321da177e4SLinus Torvalds struct xfs_buf; 331da177e4SLinus Torvalds struct xfs_mount; 341da177e4SLinus Torvalds struct xfs_buf_log_item; 351da177e4SLinus Torvalds 361da177e4SLinus Torvalds /* 371da177e4SLinus Torvalds * This is the in core log item structure used to track information 381da177e4SLinus Torvalds * needed to log buffers. It tracks how many times the lock has been 391da177e4SLinus Torvalds * locked, and which 128 byte chunks of the buffer are dirty. 401da177e4SLinus Torvalds */ 4170a20655SCarlos Maiolino struct xfs_buf_log_item { 421da177e4SLinus Torvalds xfs_log_item_t bli_item; /* common item structure */ 431da177e4SLinus Torvalds struct xfs_buf *bli_buf; /* real buffer pointer */ 441da177e4SLinus Torvalds unsigned int bli_flags; /* misc flags */ 451da177e4SLinus Torvalds unsigned int bli_recur; /* lock recursion count */ 461da177e4SLinus Torvalds atomic_t bli_refcount; /* cnt of tp refs */ 47372cc85eSDave Chinner int bli_format_count; /* count of headers */ 48372cc85eSDave Chinner struct xfs_buf_log_format *bli_formats; /* array of in-log header ptrs */ 49b9438173SMark Tinguely struct xfs_buf_log_format __bli_format; /* embedded in-log header */ 5070a20655SCarlos Maiolino }; 511da177e4SLinus Torvalds 52f79af0b9SDave Chinner int xfs_buf_item_init(struct xfs_buf *, struct xfs_mount *); 531da177e4SLinus Torvalds void xfs_buf_item_relse(struct xfs_buf *); 5495808459SBrian Foster bool xfs_buf_item_put(struct xfs_buf_log_item *); 5570a20655SCarlos Maiolino void xfs_buf_item_log(struct xfs_buf_log_item *, uint, uint); 566453c65dSBrian Foster bool xfs_buf_item_dirty_format(struct xfs_buf_log_item *); 571da177e4SLinus Torvalds void xfs_buf_attach_iodone(struct xfs_buf *, 581da177e4SLinus Torvalds void(*)(struct xfs_buf *, xfs_log_item_t *), 591da177e4SLinus Torvalds xfs_log_item_t *); 601da177e4SLinus Torvalds void xfs_buf_iodone_callbacks(struct xfs_buf *); 61ca30b2a7SChristoph Hellwig void xfs_buf_iodone(struct xfs_buf *, struct xfs_log_item *); 62d3a304b6SCarlos Maiolino bool xfs_buf_resubmit_failed_buffers(struct xfs_buf *, 63d3a304b6SCarlos Maiolino struct list_head *); 641da177e4SLinus Torvalds 65a8da0da2SDave Chinner extern kmem_zone_t *xfs_buf_item_zone; 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds #endif /* __XFS_BUF_ITEM_H__ */ 68