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SubjectRe: [PATCH] vfs: namei operations should pass nameidata when available
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On Mon, 2005-03-28 at 12:17, Christoph Hellwig wrote:
> > + dentry = __lookup_hash(&nd->last, nd->dentry, nd);
>
> Please add a tiny wrapper lookup_hash_nd(struct nameidata *nd)
> that expands to the above instead of opencoding it everywhere.
>
> Or just call it lookup_hash() after you removed the original version..

Jeff,

I have incorporated the Christophs' comments.
lookup_hash() now takes a third
nameidata argument. I touch tested it. If you like the patch can
your forward it to Andrew.

Thanks,
RP

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diff -Nrup -X dontdiff /home/linux/views/linux-2.6.12-rc4/drivers/usb/core/inode.c linux-2.6.12-rc4/drivers/usb/core/inode.c
--- /home/linux/views/linux-2.6.12-rc4/drivers/usb/core/inode.c 2005-05-06 23:22:26.000000000 -0700
+++ linux-2.6.12-rc4/drivers/usb/core/inode.c 2005-05-23 13:41:10.000000000 -0700
@@ -460,7 +460,7 @@ static struct dentry * get_dentry(struct
qstr.name = name;
qstr.len = strlen(name);
qstr.hash = full_name_hash(name,qstr.len);
- return lookup_hash(&qstr,parent);
+ return lookup_hash(&qstr,parent,NULL);
}


diff -Nrup -X dontdiff /home/linux/views/linux-2.6.12-rc4/fs/debugfs/inode.c linux-2.6.12-rc4/fs/debugfs/inode.c
--- /home/linux/views/linux-2.6.12-rc4/fs/debugfs/inode.c 2005-03-02 02:59:59.000000000 -0800
+++ linux-2.6.12-rc4/fs/debugfs/inode.c 2005-05-23 13:41:46.000000000 -0700
@@ -117,7 +117,7 @@ static struct dentry * get_dentry(struct
qstr.name = name;
qstr.len = strlen(name);
qstr.hash = full_name_hash(name,qstr.len);
- return lookup_hash(&qstr,parent);
+ return lookup_hash(&qstr,parent,NULL);
}

static struct super_block *debug_get_sb(struct file_system_type *fs_type,
diff -Nrup -X dontdiff /home/linux/views/linux-2.6.12-rc4/fs/ext3/super.c linux-2.6.12-rc4/fs/ext3/super.c
--- /home/linux/views/linux-2.6.12-rc4/fs/ext3/super.c 2005-05-06 23:22:29.000000000 -0700
+++ linux-2.6.12-rc4/fs/ext3/super.c 2005-05-23 13:42:07.000000000 -0700
@@ -2346,7 +2346,7 @@ static int ext3_quota_on_mount(struct su
.hash = 0,
.len = strlen(EXT3_SB(sb)->s_qf_names[type])};

- dentry = lookup_hash(&name, sb->s_root);
+ dentry = lookup_hash(&name, sb->s_root, NULL);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
err = vfs_quota_on_mount(type, EXT3_SB(sb)->s_jquota_fmt, dentry);
diff -Nrup -X dontdiff /home/linux/views/linux-2.6.12-rc4/fs/namei.c linux-2.6.12-rc4/fs/namei.c
--- /home/linux/views/linux-2.6.12-rc4/fs/namei.c 2005-05-06 23:22:29.000000000 -0700
+++ linux-2.6.12-rc4/fs/namei.c 2005-05-23 13:42:56.000000000 -0700
@@ -1075,9 +1075,10 @@ out:
return dentry;
}

-struct dentry * lookup_hash(struct qstr *name, struct dentry * base)
+struct dentry * lookup_hash(struct qstr *name, struct dentry * base,
+ struct nameidata *nd)
{
- return __lookup_hash(name, base, NULL);
+ return __lookup_hash(name, base, nd);
}

/* SMP-safe */
@@ -1101,7 +1102,7 @@ struct dentry * lookup_one_len(const cha
}
this.hash = end_name_hash(hash);

- return lookup_hash(&this, base);
+ return lookup_hash(&this, base, NULL);
access:
return ERR_PTR(-EACCES);
}
@@ -1568,7 +1569,7 @@ struct dentry *lookup_create(struct name
if (nd->last_type != LAST_NORM)
goto fail;
nd->flags &= ~LOOKUP_PARENT;
- dentry = lookup_hash(&nd->last, nd->dentry);
+ dentry = lookup_hash(&nd->last, nd->dentry, nd);
if (IS_ERR(dentry))
goto fail;
if (!is_dir && nd->last.name[nd->last.len] && !dentry->d_inode)
@@ -1800,7 +1801,7 @@ asmlinkage long sys_rmdir(const char __u
goto exit1;
}
down(&nd.dentry->d_inode->i_sem);
- dentry = lookup_hash(&nd.last, nd.dentry);
+ dentry = lookup_hash(&nd.last, nd.dentry, &nd);
error = PTR_ERR(dentry);
if (!IS_ERR(dentry)) {
error = vfs_rmdir(nd.dentry->d_inode, dentry);
@@ -1869,7 +1870,7 @@ asmlinkage long sys_unlink(const char __
if (nd.last_type != LAST_NORM)
goto exit1;
down(&nd.dentry->d_inode->i_sem);
- dentry = lookup_hash(&nd.last, nd.dentry);
+ dentry = lookup_hash(&nd.last, nd.dentry, &nd);
error = PTR_ERR(dentry);
if (!IS_ERR(dentry)) {
/* Why not before? Because we want correct error value */
@@ -2218,7 +2219,7 @@ static inline int do_rename(const char *

trap = lock_rename(new_dir, old_dir);

- old_dentry = lookup_hash(&oldnd.last, old_dir);
+ old_dentry = lookup_hash(&oldnd.last, old_dir, &oldnd);
error = PTR_ERR(old_dentry);
if (IS_ERR(old_dentry))
goto exit3;
@@ -2238,7 +2239,7 @@ static inline int do_rename(const char *
error = -EINVAL;
if (old_dentry == trap)
goto exit4;
- new_dentry = lookup_hash(&newnd.last, new_dir);
+ new_dentry = lookup_hash(&newnd.last, new_dir, &newnd);
error = PTR_ERR(new_dentry);
if (IS_ERR(new_dentry))
goto exit4;
diff -Nrup -X dontdiff /home/linux/views/linux-2.6.12-rc4/fs/reiserfs/super.c linux-2.6.12-rc4/fs/reiserfs/super.c
--- /home/linux/views/linux-2.6.12-rc4/fs/reiserfs/super.c 2005-05-06 23:22:29.000000000 -0700
+++ linux-2.6.12-rc4/fs/reiserfs/super.c 2005-05-23 13:43:11.000000000 -0700
@@ -1941,7 +1941,7 @@ static int reiserfs_quota_on_mount(struc
.hash = 0,
.len = strlen(REISERFS_SB(sb)->s_qf_names[type])};

- dentry = lookup_hash(&name, sb->s_root);
+ dentry = lookup_hash(&name, sb->s_root, NULL);
if (IS_ERR(dentry))
return PTR_ERR(dentry);
err = vfs_quota_on_mount(type, REISERFS_SB(sb)->s_jquota_fmt, dentry);
diff -Nrup -X dontdiff /home/linux/views/linux-2.6.12-rc4/fs/sysfs/inode.c linux-2.6.12-rc4/fs/sysfs/inode.c
--- /home/linux/views/linux-2.6.12-rc4/fs/sysfs/inode.c 2005-05-06 23:22:30.000000000 -0700
+++ linux-2.6.12-rc4/fs/sysfs/inode.c 2005-05-23 13:43:35.000000000 -0700
@@ -83,7 +83,7 @@ struct dentry * sysfs_get_dentry(struct
qstr.name = name;
qstr.len = strlen(name);
qstr.hash = full_name_hash(name,qstr.len);
- return lookup_hash(&qstr,parent);
+ return lookup_hash(&qstr,parent,NULL);
}

/*
diff -Nrup -X dontdiff /home/linux/views/linux-2.6.12-rc4/include/linux/namei.h linux-2.6.12-rc4/include/linux/namei.h
--- /home/linux/views/linux-2.6.12-rc4/include/linux/namei.h 2005-05-06 23:22:33.000000000 -0700
+++ linux-2.6.12-rc4/include/linux/namei.h 2005-05-23 13:28:44.000000000 -0700
@@ -66,7 +66,8 @@ extern void path_release(struct nameidat
extern void path_release_on_umount(struct nameidata *);

extern struct dentry * lookup_one_len(const char *, struct dentry *, int);
-extern struct dentry * lookup_hash(struct qstr *, struct dentry *);
+extern struct dentry * lookup_hash(struct qstr *, struct dentry *,
+ struct nameidata *);

extern int follow_down(struct vfsmount **, struct dentry **);
extern int follow_up(struct vfsmount **, struct dentry **);
diff -Nrup -X dontdiff /home/linux/views/linux-2.6.12-rc4/net/sunrpc/rpc_pipe.c linux-2.6.12-rc4/net/sunrpc/rpc_pipe.c
--- /home/linux/views/linux-2.6.12-rc4/net/sunrpc/rpc_pipe.c 2005-03-02 03:00:24.000000000 -0800
+++ linux-2.6.12-rc4/net/sunrpc/rpc_pipe.c 2005-05-23 13:51:08.000000000 -0700
@@ -601,7 +601,7 @@ rpc_lookup_negative(char *path, struct n
return ERR_PTR(error);
dir = nd->dentry->d_inode;
down(&dir->i_sem);
- dentry = lookup_hash(&nd->last, nd->dentry);
+ dentry = lookup_hash(&nd->last, nd->dentry, nd);
if (IS_ERR(dentry))
goto out_err;
if (dentry->d_inode) {
@@ -663,7 +663,7 @@ rpc_rmdir(char *path)
return error;
dir = nd.dentry->d_inode;
down(&dir->i_sem);
- dentry = lookup_hash(&nd.last, nd.dentry);
+ dentry = lookup_hash(&nd.last, nd.dentry, &nd);
if (IS_ERR(dentry)) {
error = PTR_ERR(dentry);
goto out_release;
@@ -724,7 +724,7 @@ rpc_unlink(char *path)
return error;
dir = nd.dentry->d_inode;
down(&dir->i_sem);
- dentry = lookup_hash(&nd.last, nd.dentry);
+ dentry = lookup_hash(&nd.last, nd.dentry, &nd);
if (IS_ERR(dentry)) {
error = PTR_ERR(dentry);
goto out_release;
diff -Nrup -X dontdiff /home/linux/views/linux-2.6.12-rc4/net/unix/af_unix.c linux-2.6.12-rc4/net/unix/af_unix.c
--- /home/linux/views/linux-2.6.12-rc4/net/unix/af_unix.c 2005-05-06 23:22:35.000000000 -0700
+++ linux-2.6.12-rc4/net/unix/af_unix.c 2005-05-23 13:51:22.000000000 -0700
@@ -784,7 +784,7 @@ static int unix_bind(struct socket *sock
/*
* Do the final lookup.
*/
- dentry = lookup_hash(&nd.last, nd.dentry);
+ dentry = lookup_hash(&nd.last, nd.dentry, &nd);
err = PTR_ERR(dentry);
if (IS_ERR(dentry))
goto out_mknod_unlock;
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