2 * Copyright (c) 1982, 1986, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)ffs_vnops.c 8.15 (Berkeley) 5/14/95
34 * $FreeBSD: src/sys/ufs/ffs/ffs_vnops.c,v 1.64 2000/01/10 12:04:25 phk Exp $
35 * $DragonFly: src/sys/vfs/ufs/ffs_vnops.c,v 1.13 2005/04/15 19:08:32 dillon Exp $
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/resourcevar.h>
41 #include <sys/signalvar.h>
42 #include <sys/kernel.h>
46 #include <sys/mount.h>
47 #include <sys/vnode.h>
50 #include <machine/limits.h>
53 #include <vm/vm_page.h>
54 #include <vm/vm_object.h>
55 #include <vm/vm_extern.h>
62 #include "ufs_extern.h"
65 #include "ffs_extern.h"
67 static int ffs_fsync (struct vop_fsync_args *);
68 static int ffs_getpages (struct vop_getpages_args *);
69 static int ffs_putpages (struct vop_putpages_args *);
70 static int ffs_read (struct vop_read_args *);
71 static int ffs_write (struct vop_write_args *);
73 /* Global vfs data structures for ufs. */
74 struct vnodeopv_entry_desc ffs_vnodeop_entries[] = {
75 { &vop_default_desc, (vnodeopv_entry_t) ufs_vnoperate },
76 { &vop_fsync_desc, (vnodeopv_entry_t) ffs_fsync },
77 { &vop_getpages_desc, (vnodeopv_entry_t) ffs_getpages },
78 { &vop_putpages_desc, (vnodeopv_entry_t) ffs_putpages },
79 { &vop_read_desc, (vnodeopv_entry_t) ffs_read },
80 { &vop_balloc_desc, (vnodeopv_entry_t) ffs_balloc },
81 { &vop_reallocblks_desc, (vnodeopv_entry_t) ffs_reallocblks },
82 { &vop_write_desc, (vnodeopv_entry_t) ffs_write },
86 struct vnodeopv_entry_desc ffs_specop_entries[] = {
87 { &vop_default_desc, (vnodeopv_entry_t) ufs_vnoperatespec },
88 { &vop_fsync_desc, (vnodeopv_entry_t) ffs_fsync },
92 struct vnodeopv_entry_desc ffs_fifoop_entries[] = {
93 { &vop_default_desc, (vnodeopv_entry_t) ufs_vnoperatefifo },
94 { &vop_fsync_desc, (vnodeopv_entry_t) ffs_fsync },
98 #include "ufs_readwrite.c"
101 * Synch an open file.
103 * ffs_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor,
107 static int ffs_checkdeferred(struct buf *bp);
111 ffs_fsync(struct vop_fsync_args *ap)
113 struct vnode *vp = ap->a_vp;
117 if (vn_isdisk(vp, NULL)) {
119 if (vp->v_rdev && vp->v_rdev->si_mountpoint != NULL &&
120 (vp->v_rdev->si_mountpoint->mnt_flag & MNT_SOFTDEP))
121 softdep_fsync_mountdev(vp);
125 lbn = lblkno(ip->i_fs, (ip->i_size + ip->i_fs->fs_bsize - 1));
129 * Flush all dirty buffers associated with a vnode.
131 error = vfsync(vp, ap->a_waitfor, NIADDR + 1, lbn, ffs_checkdeferred, softdep_sync_metadata);
133 error = UFS_UPDATE(vp, (ap->a_waitfor == MNT_WAIT));
138 ffs_checkdeferred(struct buf *bp)
140 if (LIST_FIRST(&bp->b_dep) != NULL &&
141 (bp->b_flags & B_DEFERRED) == 0 &&
142 bioops.io_countdeps && (*bioops.io_countdeps)(bp, 0)) {
143 bp->b_flags |= B_DEFERRED;