?? xfs_lrw.h
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/* * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 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. * * Further, this software is distributed without any warranty that it is * free of the rightful claim of any third person regarding infringement * or the like. Any license provided herein, whether implied or * otherwise, applies only to this software file. Patent licenses, if * any, provided herein do not apply to combinations of this program with * other software, or any other product whatsoever. * * You should have received a copy of the GNU General Public License along * with this program; if not, write the Free Software Foundation, Inc., 59 * Temple Place - Suite 330, Boston MA 02111-1307, USA. * * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, * Mountain View, CA 94043, or: * * http://www.sgi.com * * For further information regarding this notice, see: * * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ */#ifndef __XFS_LRW_H__#define __XFS_LRW_H__struct vnode;struct bhv_desc;struct xfs_mount;struct xfs_iocore;struct xfs_inode;struct xfs_bmbt_irec;struct xfs_buf;struct xfs_iomap;#if defined(XFS_RW_TRACE)/* * Defines for the trace mechanisms in xfs_lrw.c. */#define XFS_RW_KTRACE_SIZE 128#define XFS_READ_ENTER 1#define XFS_WRITE_ENTER 2#define XFS_IOMAP_READ_ENTER 3#define XFS_IOMAP_WRITE_ENTER 4#define XFS_IOMAP_READ_MAP 5#define XFS_IOMAP_WRITE_MAP 6#define XFS_IOMAP_WRITE_NOSPACE 7#define XFS_ITRUNC_START 8#define XFS_ITRUNC_FINISH1 9#define XFS_ITRUNC_FINISH2 10#define XFS_CTRUNC1 11#define XFS_CTRUNC2 12#define XFS_CTRUNC3 13#define XFS_CTRUNC4 14#define XFS_CTRUNC5 15#define XFS_CTRUNC6 16#define XFS_BUNMAPI 17#define XFS_INVAL_CACHED 18#define XFS_DIORD_ENTER 19#define XFS_DIOWR_ENTER 20#define XFS_SENDFILE_ENTER 21#define XFS_WRITEPAGE_ENTER 22#define XFS_RELEASEPAGE_ENTER 23#define XFS_IOMAP_ALLOC_ENTER 24#define XFS_IOMAP_ALLOC_MAP 25#define XFS_IOMAP_UNWRITTEN 26extern void xfs_rw_enter_trace(int, struct xfs_iocore *, const struct iovec *, size_t, loff_t, int);extern void xfs_inval_cached_trace(struct xfs_iocore *, xfs_off_t, xfs_off_t, xfs_off_t, xfs_off_t);#else#define xfs_rw_enter_trace(tag, io, iovec, segs, offset, ioflags)#define xfs_inval_cached_trace(io, offset, len, first, last)#endif/* * Maximum count of bmaps used by read and write paths. */#define XFS_MAX_RW_NBMAPS 4extern int xfs_bmap(struct bhv_desc *, xfs_off_t, ssize_t, int, struct xfs_iomap *, int *);extern int xfsbdstrat(struct xfs_mount *, struct xfs_buf *);extern int xfs_bdstrat_cb(struct xfs_buf *);extern int xfs_zero_eof(struct vnode *, struct xfs_iocore *, xfs_off_t, xfs_fsize_t, xfs_fsize_t);extern void xfs_inval_cached_pages(struct vnode *, struct xfs_iocore *, xfs_off_t, int, int);extern ssize_t xfs_read(struct bhv_desc *, struct kiocb *, const struct iovec *, unsigned int, loff_t *, int, struct cred *);extern ssize_t xfs_write(struct bhv_desc *, struct kiocb *, const struct iovec *, unsigned int, loff_t *, int, struct cred *);extern ssize_t xfs_sendfile(struct bhv_desc *, struct file *, loff_t *, int, size_t, read_actor_t, void *, struct cred *);extern int xfs_dev_is_read_only(struct xfs_mount *, char *);#define XFS_FSB_TO_DB_IO(io,fsb) \ (((io)->io_flags & XFS_IOCORE_RT) ? \ XFS_FSB_TO_BB((io)->io_mount, (fsb)) : \ XFS_FSB_TO_DADDR((io)->io_mount, (fsb)))#endif /* __XFS_LRW_H__ */
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