| /* |
| * Copyright (c) 2005-2006 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_AOPS_H__ |
| #define __XFS_AOPS_H__ |
| |
| extern struct bio_set *xfs_ioend_bioset; |
| |
| /* |
| * Types of I/O for bmap clustering and I/O completion tracking. |
| */ |
| enum { |
| XFS_IO_INVALID, /* initial state */ |
| XFS_IO_DELALLOC, /* covers delalloc region */ |
| XFS_IO_UNWRITTEN, /* covers allocated but uninitialized data */ |
| XFS_IO_OVERWRITE, /* covers already allocated extent */ |
| XFS_IO_COW, /* covers copy-on-write extent */ |
| }; |
| |
| #define XFS_IO_TYPES \ |
| { XFS_IO_INVALID, "invalid" }, \ |
| { XFS_IO_DELALLOC, "delalloc" }, \ |
| { XFS_IO_UNWRITTEN, "unwritten" }, \ |
| { XFS_IO_OVERWRITE, "overwrite" }, \ |
| { XFS_IO_COW, "CoW" } |
| |
| /* |
| * Structure for buffered I/O completions. |
| */ |
| struct xfs_ioend { |
| struct list_head io_list; /* next ioend in chain */ |
| unsigned int io_type; /* delalloc / unwritten */ |
| struct inode *io_inode; /* file being written to */ |
| size_t io_size; /* size of the extent */ |
| xfs_off_t io_offset; /* offset in the file */ |
| struct work_struct io_work; /* xfsdatad work queue */ |
| struct xfs_trans *io_append_trans;/* xact. for size update */ |
| struct bio *io_bio; /* bio being built */ |
| struct bio io_inline_bio; /* MUST BE LAST! */ |
| }; |
| |
| extern const struct address_space_operations xfs_address_space_operations; |
| |
| int xfs_get_blocks(struct inode *inode, sector_t offset, |
| struct buffer_head *map_bh, int create); |
| int xfs_get_blocks_direct(struct inode *inode, sector_t offset, |
| struct buffer_head *map_bh, int create); |
| int xfs_get_blocks_dax_fault(struct inode *inode, sector_t offset, |
| struct buffer_head *map_bh, int create); |
| |
| int xfs_end_io_direct_write(struct kiocb *iocb, loff_t offset, |
| ssize_t size, void *private); |
| int xfs_setfilesize(struct xfs_inode *ip, xfs_off_t offset, size_t size); |
| |
| extern void xfs_count_page_state(struct page *, int *, int *); |
| extern struct block_device *xfs_find_bdev_for_inode(struct inode *); |
| |
| #endif /* __XFS_AOPS_H__ */ |