/*
* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
- * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
- * of the GNU General Public License v.2.
+ * of the GNU General Public License version 2.
*/
-#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
-#include <linux/smp_lock.h>
#include <linux/gfs2_ondisk.h>
-#include <asm/semaphore.h>
+#include <linux/crc32.h>
#include "gfs2.h"
-#include "lm_interface.h"
#include "incore.h"
#include "dir.h"
#include "glock.h"
-#include "ops_dentry.h"
+#include "super.h"
#include "util.h"
+#include "inode.h"
/**
* gfs2_drevalidate - Check directory lookup consistency
static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd)
{
struct dentry *parent = dget_parent(dentry);
- struct gfs2_inode *dip = parent->d_inode->u.generic_ip;
- struct inode *inode;
+ struct gfs2_sbd *sdp = GFS2_SB(parent->d_inode);
+ struct gfs2_inode *dip = GFS2_I(parent->d_inode);
+ struct inode *inode = dentry->d_inode;
struct gfs2_holder d_gh;
- struct gfs2_inode *ip;
- struct gfs2_inum inum;
- unsigned int type;
+ struct gfs2_inode *ip = NULL;
int error;
+ int had_lock = 0;
- lock_kernel();
+ if (inode) {
+ if (is_bad_inode(inode))
+ goto invalid;
+ ip = GFS2_I(inode);
+ }
- inode = dentry->d_inode;
- if (inode && is_bad_inode(inode))
- goto invalid;
+ if (sdp->sd_args.ar_localcaching)
+ goto valid;
- error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
- if (error)
- goto fail;
+ had_lock = (gfs2_glock_is_locked_by_me(dip->i_gl) != NULL);
+ if (!had_lock) {
+ error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, &d_gh);
+ if (error)
+ goto fail;
+ }
- error = gfs2_dir_search(dip, &dentry->d_name, &inum, &type);
+ error = gfs2_dir_check(parent->d_inode, &dentry->d_name, ip);
switch (error) {
case 0:
if (!inode)
goto fail_gunlock;
}
- ip = inode->u.generic_ip;
-
- if (!gfs2_inum_equal(&ip->i_num, &inum))
- goto invalid_gunlock;
-
- if (IF2DT(ip->i_di.di_mode) != type) {
- gfs2_consist_inode(dip);
- goto fail_gunlock;
- }
-
- valid_gunlock:
- gfs2_glock_dq_uninit(&d_gh);
-
- valid:
- unlock_kernel();
+valid_gunlock:
+ if (!had_lock)
+ gfs2_glock_dq_uninit(&d_gh);
+valid:
dput(parent);
return 1;
- invalid_gunlock:
- gfs2_glock_dq_uninit(&d_gh);
-
- invalid:
+invalid_gunlock:
+ if (!had_lock)
+ gfs2_glock_dq_uninit(&d_gh);
+invalid:
if (inode && S_ISDIR(inode->i_mode)) {
if (have_submounts(dentry))
goto valid;
shrink_dcache_parent(dentry);
}
d_drop(dentry);
-
- unlock_kernel();
dput(parent);
return 0;
- fail_gunlock:
+fail_gunlock:
gfs2_glock_dq_uninit(&d_gh);
-
- fail:
- unlock_kernel();
+fail:
dput(parent);
return 0;
}
-struct dentry_operations gfs2_dops = {
+static int gfs2_dhash(struct dentry *dentry, struct qstr *str)
+{
+ str->hash = gfs2_disk_hash(str->name, str->len);
+ return 0;
+}
+
+const struct dentry_operations gfs2_dops = {
.d_revalidate = gfs2_drevalidate,
+ .d_hash = gfs2_dhash,
};