Embed a struct path into struct nameidata instead of nd->{dentry,mnt}
This is the central patch of a cleanup series. In most cases there is no good
reason why someone would want to use a dentry for itself. This series reflects
that fact and embeds a struct path into nameidata.
Together with the other patches of this series
- it enforced the correct order of getting/releasing the reference count on
<dentry,vfsmount> pairs
- it prepares the VFS for stacking support since it is essential to have a
struct path in every place where the stack can be traversed
- it reduces the overall code size:
without patch series:
text data bss dec hex filename
5321639 858418 715768 6895825 6938d1 vmlinux
with patch series:
text data bss dec hex filename
5320026 858418 715768 6894212 693284 vmlinux
This patch:
Switch from nd->{dentry,mnt} to nd->path.{dentry,mnt} everywhere.
[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: fix cifs]
[akpm@linux-foundation.org: fix smack]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index 5ce43b6..4136dfb 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -218,14 +218,14 @@
_enter("%p{%s},{%s:%p{%s},}",
dentry,
dentry->d_name.name,
- nd->mnt->mnt_devname,
+ nd->path.mnt->mnt_devname,
dentry,
- nd->dentry->d_name.name);
+ nd->path.dentry->d_name.name);
- dput(nd->dentry);
- nd->dentry = dget(dentry);
+ dput(nd->path.dentry);
+ nd->path.dentry = dget(dentry);
- newmnt = afs_mntpt_do_automount(nd->dentry);
+ newmnt = afs_mntpt_do_automount(nd->path.dentry);
if (IS_ERR(newmnt)) {
path_release(nd);
return (void *)newmnt;
@@ -235,17 +235,17 @@
err = do_add_mount(newmnt, nd, MNT_SHRINKABLE, &afs_vfsmounts);
switch (err) {
case 0:
- dput(nd->dentry);
- mntput(nd->mnt);
- nd->mnt = newmnt;
- nd->dentry = dget(newmnt->mnt_root);
+ dput(nd->path.dentry);
+ mntput(nd->path.mnt);
+ nd->path.mnt = newmnt;
+ nd->path.dentry = dget(newmnt->mnt_root);
schedule_delayed_work(&afs_mntpt_expiry_timer,
afs_mntpt_expiry_timeout * HZ);
break;
case -EBUSY:
/* someone else made a mount here whilst we were busy */
- while (d_mountpoint(nd->dentry) &&
- follow_down(&nd->mnt, &nd->dentry))
+ while (d_mountpoint(nd->path.dentry) &&
+ follow_down(&nd->path.mnt, &nd->path.dentry))
;
err = 0;
default:
