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>

1 files changed, 16 insertions, 16 deletions

diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 1602cd00dd45..a7a8fdf86ea7 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -120,9 +120,9 @@ out_no_tfm:
 static void
 nfsd4_sync_rec_dir(void)
 {
-        mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
-        nfsd_sync_dir(rec_dir.dentry);
-        mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
+        mutex_lock(&rec_dir.path.dentry->d_inode->i_mutex);
+        nfsd_sync_dir(rec_dir.path.dentry);
+        mutex_unlock(&rec_dir.path.dentry->d_inode->i_mutex);
 }
 
 int
@@ -142,9 +142,9 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
         nfs4_save_user(&uid, &gid);
 
         /* lock the parent */
-        mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
+        mutex_lock(&rec_dir.path.dentry->d_inode->i_mutex);
 
-        dentry = lookup_one_len(dname, rec_dir.dentry, HEXDIR_LEN-1);
+        dentry = lookup_one_len(dname, rec_dir.path.dentry, HEXDIR_LEN-1);
         if (IS_ERR(dentry)) {
                 status = PTR_ERR(dentry);
                 goto out_unlock;
@@ -154,11 +154,11 @@ nfsd4_create_clid_dir(struct nfs4_client *clp)
                 dprintk("NFSD: nfsd4_create_clid_dir: DIRECTORY EXISTS\n");
                 goto out_put;
         }
-        status = vfs_mkdir(rec_dir.dentry->d_inode, dentry, S_IRWXU);
+        status = vfs_mkdir(rec_dir.path.dentry->d_inode, dentry, S_IRWXU);
 out_put:
         dput(dentry);
 out_unlock:
-        mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
+        mutex_unlock(&rec_dir.path.dentry->d_inode->i_mutex);
         if (status == 0) {
                 clp->cl_firststate = 1;
                 nfsd4_sync_rec_dir();
@@ -221,7 +221,7 @@ nfsd4_list_rec_dir(struct dentry *dir, recdir_func *f)
 
         nfs4_save_user(&uid, &gid);
 
-        filp = dentry_open(dget(dir), mntget(rec_dir.mnt), O_RDONLY);
+        filp = dentry_open(dget(dir), mntget(rec_dir.path.mnt), O_RDONLY);
         status = PTR_ERR(filp);
         if (IS_ERR(filp))
                 goto out;
@@ -286,9 +286,9 @@ nfsd4_unlink_clid_dir(char *name, int namlen)
 
         dprintk("NFSD: nfsd4_unlink_clid_dir. name %.*s\n", namlen, name);
 
-        mutex_lock(&rec_dir.dentry->d_inode->i_mutex);
-        dentry = lookup_one_len(name, rec_dir.dentry, namlen);
-        mutex_unlock(&rec_dir.dentry->d_inode->i_mutex);
+        mutex_lock(&rec_dir.path.dentry->d_inode->i_mutex);
+        dentry = lookup_one_len(name, rec_dir.path.dentry, namlen);
+        mutex_unlock(&rec_dir.path.dentry->d_inode->i_mutex);
         if (IS_ERR(dentry)) {
                 status = PTR_ERR(dentry);
                 return status;
@@ -297,7 +297,7 @@ nfsd4_unlink_clid_dir(char *name, int namlen)
         if (!dentry->d_inode)
                 goto out;
 
-        status = nfsd4_clear_clid_dir(rec_dir.dentry, dentry);
+        status = nfsd4_clear_clid_dir(rec_dir.path.dentry, dentry);
 out:
         dput(dentry);
         return status;
@@ -347,12 +347,12 @@ nfsd4_recdir_purge_old(void) {
 
         if (!rec_dir_init)
                 return;
-        status = nfsd4_list_rec_dir(rec_dir.dentry, purge_old);
+        status = nfsd4_list_rec_dir(rec_dir.path.dentry, purge_old);
         if (status == 0)
                 nfsd4_sync_rec_dir();
         if (status)
                 printk("nfsd4: failed to purge old clients from recovery"
-                        " directory %s\n", rec_dir.dentry->d_name.name);
+                        " directory %s\n", rec_dir.path.dentry->d_name.name);
         return;
 }
 
@@ -373,10 +373,10 @@ int
 nfsd4_recdir_load(void) {
         int status;
 
-        status = nfsd4_list_rec_dir(rec_dir.dentry, load_recdir);
+        status = nfsd4_list_rec_dir(rec_dir.path.dentry, load_recdir);
         if (status)
                 printk("nfsd4: failed loading clients from recovery"
-                        " directory %s\n", rec_dir.dentry->d_name.name);
+                        " directory %s\n", rec_dir.path.dentry->d_name.name);
         return status;
 }