kernel/vfs: Remove some unused variables.
[dragonfly.git] / sys / vfs / ufs / ffs_vnops.c
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1/*
2 * Copyright (c) 1982, 1986, 1989, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
20 *
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
31 * SUCH DAMAGE.
32 *
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 */
36
37#include <sys/param.h>
38#include <sys/systm.h>
39#include <sys/resourcevar.h>
40#include <sys/signalvar.h>
41#include <sys/kernel.h>
42#include <sys/stat.h>
43#include <sys/buf.h>
44#include <sys/proc.h>
45#include <sys/mount.h>
46#include <sys/vnode.h>
47#include <sys/conf.h>
48
49#include <machine/limits.h>
50
51#include <vm/vm.h>
52#include <vm/vm_page.h>
53#include <vm/vm_object.h>
54#include <vm/vm_extern.h>
55
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56#include <sys/buf2.h>
57
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58#include "quota.h"
59#include "inode.h"
60#include "ufsmount.h"
61#include "ufs_extern.h"
984263bc 62
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63#include "fs.h"
64#include "ffs_extern.h"
984263bc 65
a6ee311a 66static int ffs_fsync (struct vop_fsync_args *);
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67static int ffs_read (struct vop_read_args *);
68static int ffs_write (struct vop_write_args *);
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69
70/* Global vfs data structures for ufs. */
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71struct vop_ops ffs_vnode_vops = {
72 .vop_default = ufs_vnoperate,
73 .vop_fsync = ffs_fsync,
a9de949a 74 .vop_getpages = vop_stdgetpages,
1787385d 75 .vop_putpages = vop_stdputpages,
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76 .vop_read = ffs_read,
77 .vop_balloc = ffs_balloc,
78 .vop_reallocblks = ffs_reallocblks,
79 .vop_write = ffs_write
984263bc 80};
984263bc 81
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82struct vop_ops ffs_spec_vops = {
83 .vop_default = ufs_vnoperatespec,
84 .vop_fsync = ffs_fsync
984263bc 85};
984263bc 86
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87struct vop_ops ffs_fifo_vops = {
88 .vop_default = ufs_vnoperatefifo,
89 .vop_fsync = ffs_fsync
984263bc 90};
984263bc 91
1f2de5d4 92#include "ufs_readwrite.c"
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93
94/*
95 * Synch an open file.
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96 *
97 * ffs_fsync(struct vnode *a_vp, struct ucred *a_cred, int a_waitfor,
98 * struct proc *a_p)
984263bc 99 */
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100
101static int ffs_checkdeferred(struct buf *bp);
102
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103/* ARGSUSED */
104static int
0973c589 105ffs_fsync(struct vop_fsync_args *ap)
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106{
107 struct vnode *vp = ap->a_vp;
6bae6177 108 int error;
984263bc 109
1d0de3d3 110 if (vn_isdisk(vp, NULL))
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111 if (vp->v_rdev && vp->v_rdev->si_mountpoint != NULL &&
112 (vp->v_rdev->si_mountpoint->mnt_flag & MNT_SOFTDEP))
984263bc 113 softdep_fsync_mountdev(vp);
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114
115 /*
116 * Flush all dirty buffers associated with a vnode.
117 */
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118 error = vfsync(vp, ap->a_waitfor, NIADDR + 1, ffs_checkdeferred,
119 softdep_sync_metadata);
6bae6177 120 if (error == 0)
ac690a1d 121 error = ffs_update(vp, (ap->a_waitfor == MNT_WAIT));
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122 return (error);
123}
984263bc 124
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125static int
126ffs_checkdeferred(struct buf *bp)
127{
128 if (LIST_FIRST(&bp->b_dep) != NULL &&
129 (bp->b_flags & B_DEFERRED) == 0 &&
408357d8 130 buf_countdeps(bp, 0)) {
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131 bp->b_flags |= B_DEFERRED;
132 return(1);
984263bc 133 }
6bae6177 134 return(0);
984263bc 135}
6bae6177 136