X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fnamei.c;h=d6e2ee251736b4eb9bc692e4f0057af5633942c7;hb=6449bd621ba51ef652ac5bda632eeabbc18dd296;hp=22f6e8d16aa858c0a16b17544d7916a91a9b9006;hpb=55d8ca4f8094246da6e71889a4e04bfafaa78b10;p=linux-2.6

diff --git a/fs/namei.c b/fs/namei.c
index 22f6e8d16a..d6e2ee2517 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1080,8 +1080,8 @@ static int fastcall do_path_lookup(int dfd, const char *name,
 	nd->flags = flags;
 	nd->depth = 0;
 
-	read_lock(&current->fs->lock);
 	if (*name=='/') {
+		read_lock(&current->fs->lock);
 		if (current->fs->altroot && !(nd->flags & LOOKUP_NOALT)) {
 			nd->mnt = mntget(current->fs->altrootmnt);
 			nd->dentry = dget(current->fs->altroot);
@@ -1092,33 +1092,35 @@ static int fastcall do_path_lookup(int dfd, const char *name,
 		}
 		nd->mnt = mntget(current->fs->rootmnt);
 		nd->dentry = dget(current->fs->root);
+		read_unlock(&current->fs->lock);
 	} else if (dfd == AT_FDCWD) {
+		read_lock(&current->fs->lock);
 		nd->mnt = mntget(current->fs->pwdmnt);
 		nd->dentry = dget(current->fs->pwd);
+		read_unlock(&current->fs->lock);
 	} else {
 		struct dentry *dentry;
 
 		file = fget_light(dfd, &fput_needed);
 		retval = -EBADF;
 		if (!file)
-			goto unlock_fail;
+			goto out_fail;
 
 		dentry = file->f_dentry;
 
 		retval = -ENOTDIR;
 		if (!S_ISDIR(dentry->d_inode->i_mode))
-			goto fput_unlock_fail;
+			goto fput_fail;
 
 		retval = file_permission(file, MAY_EXEC);
 		if (retval)
-			goto fput_unlock_fail;
+			goto fput_fail;
 
 		nd->mnt = mntget(file->f_vfsmnt);
 		nd->dentry = dget(dentry);
 
 		fput_light(file, fput_needed);
 	}
-	read_unlock(&current->fs->lock);
 	current->total_link_count = 0;
 	retval = link_path_walk(name, nd);
 out:
@@ -1127,13 +1129,12 @@ out:
 				nd->dentry->d_inode))
 		audit_inode(name, nd->dentry->d_inode, flags);
 	}
+out_fail:
 	return retval;
 
-fput_unlock_fail:
+fput_fail:
 	fput_light(file, fput_needed);
-unlock_fail:
-	read_unlock(&current->fs->lock);
-	return retval;
+	goto out_fail;
 }
 
 int fastcall path_lookup(const char *name, unsigned int flags,
@@ -1254,7 +1255,7 @@ out:
 	return dentry;
 }
 
-struct dentry * lookup_hash(struct nameidata *nd)
+static struct dentry *lookup_hash(struct nameidata *nd)
 {
 	return __lookup_hash(&nd->last, nd->dentry, nd);
 }
@@ -2697,7 +2698,6 @@ EXPORT_SYMBOL(follow_up);
 EXPORT_SYMBOL(get_write_access); /* binfmt_aout */
 EXPORT_SYMBOL(getname);
 EXPORT_SYMBOL(lock_rename);
-EXPORT_SYMBOL(lookup_hash);
 EXPORT_SYMBOL(lookup_one_len);
 EXPORT_SYMBOL(page_follow_link_light);
 EXPORT_SYMBOL(page_put_link);