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 enum { 15 XFS_IO_INVALID, /* initial state */ 16 XFS_IO_DELALLOC, /* covers delalloc region */ 17 XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */ 18 XFS_IO_OVERWRITE, /* covers already allocated extent */ 19 XFS_IO_COW, /* covers copy-on-write extent */ 20 XFS_IO_HOLE, /* covers region without any block allocation */ 21 }; 22 23 #define XFS_IO_TYPES \ 24 { XFS_IO_INVALID, "invalid" }, \ 25 { XFS_IO_DELALLOC, "delalloc" }, \ 26 { XFS_IO_UNWRITTEN, "unwritten" }, \ 27 { XFS_IO_OVERWRITE, "overwrite" }, \ 28 { XFS_IO_COW, "CoW" }, \ 29 { XFS_IO_HOLE, "hole" } 30 31 /* 32 * Structure for buffered I/O completions. 33 */ 34 struct xfs_ioend { 35 struct list_head io_list; /* next ioend in chain */ 36 unsigned int io_type; /* delalloc / unwritten */ 37 struct inode *io_inode; /* file being written to */ 38 size_t io_size; /* size of the extent */ 39 xfs_off_t io_offset; /* offset in the file */ 40 struct work_struct io_work; /* xfsdatad work queue */ 41 struct xfs_trans *io_append_trans;/* xact. for size update */ 42 struct bio *io_bio; /* bio being built */ 43 struct bio io_inline_bio; /* MUST BE LAST! */ 44 }; 45 46 extern const struct address_space_operations xfs_address_space_operations; 47 extern const struct address_space_operations xfs_dax_aops; 48 49 int xfs_setfilesize(struct xfs_inode *ip, xfs_off_t offset, size_t size); 50 51 extern void xfs_count_page_state(struct page *, int *, int *); 52 extern struct block_device *xfs_find_bdev_for_inode(struct inode *); 53 extern struct dax_device *xfs_find_daxdev_for_inode(struct inode *); 54 55 #endif /* __XFS_AOPS_H__ */ 56