1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2005-2006 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #ifndef __XFS_AOPS_H__ 7 #define __XFS_AOPS_H__ 8 9 extern struct bio_set xfs_ioend_bioset; 10 11 /* 12 * Types of I/O for bmap clustering and I/O completion tracking. 13 * 14 * This enum is used in string mapping in xfs_trace.h; please keep the 15 * TRACE_DEFINE_ENUMs for it up to date. 16 */ 17 enum { 18 XFS_IO_HOLE, /* covers region without any block allocation */ 19 XFS_IO_DELALLOC, /* covers delalloc region */ 20 XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */ 21 XFS_IO_OVERWRITE, /* covers already allocated extent */ 22 XFS_IO_COW, /* covers copy-on-write extent */ 23 }; 24 25 #define XFS_IO_TYPES \ 26 { XFS_IO_HOLE, "hole" }, \ 27 { XFS_IO_DELALLOC, "delalloc" }, \ 28 { XFS_IO_UNWRITTEN, "unwritten" }, \ 29 { XFS_IO_OVERWRITE, "overwrite" }, \ 30 { XFS_IO_COW, "CoW" } 31 32 /* 33 * Structure for buffered I/O completions. 34 */ 35 struct xfs_ioend { 36 struct list_head io_list; /* next ioend in chain */ 37 unsigned int io_type; /* delalloc / unwritten */ 38 struct inode *io_inode; /* file being written to */ 39 size_t io_size; /* size of the extent */ 40 xfs_off_t io_offset; /* offset in the file */ 41 struct work_struct io_work; /* xfsdatad work queue */ 42 struct xfs_trans *io_append_trans;/* xact. for size update */ 43 struct bio *io_bio; /* bio being built */ 44 struct bio io_inline_bio; /* MUST BE LAST! */ 45 }; 46 47 extern const struct address_space_operations xfs_address_space_operations; 48 extern const struct address_space_operations xfs_dax_aops; 49 50 int xfs_setfilesize(struct xfs_inode *ip, xfs_off_t offset, size_t size); 51 52 extern void xfs_count_page_state(struct page *, int *, int *); 53 extern struct block_device *xfs_find_bdev_for_inode(struct inode *); 54 extern struct dax_device *xfs_find_daxdev_for_inode(struct inode *); 55 56 #endif /* __XFS_AOPS_H__ */ 57