autofs4: Merge the remaining dentry ops tables

Merge the remaining autofs4 dentry ops tables.  It doesn't matter if
d_automount and d_manage are present on something that's not mountable or
holdable as these ops are only used if the appropriate flags are set in
dentry->d_flags.

[AV] switch to ->s_d_op, since now _everything_ on autofs4 is using the
same dentry_operations.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

3 files changed, 4 insertions, 20 deletions

diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index c28085cb82a..1f016bfb42d 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -207,7 +207,6 @@ extern const struct inode_operations autofs4_dir_inode_operations;
 extern const struct file_operations autofs4_dir_operations;
 extern const struct file_operations autofs4_root_operations;
 extern const struct dentry_operations autofs4_dentry_operations;
-extern const struct dentry_operations autofs4_mount_dentry_operations;
 
 /* VFS automount flags management functions */
 
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index 3ecd2e2bcdb..9e1a9dad23e 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -276,6 +276,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
         s->s_blocksize_bits = 10;
         s->s_magic = AUTOFS_SUPER_MAGIC;
         s->s_op = &autofs4_sops;
+        s->s_d_op = &autofs4_dentry_operations;
         s->s_time_gran = 1;
 
         /*
@@ -293,7 +294,6 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
                 goto fail_iput;
         pipe = NULL;
 
-        d_set_d_op(root, &autofs4_dentry_operations);
         root->d_fsdata = ino;
 
         /* Can this call block? */
@@ -304,10 +304,8 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent)
                 goto fail_dput;
         }
 
-        if (autofs_type_trigger(sbi->type)) {
-                d_set_d_op(root, &autofs4_mount_dentry_operations);
+        if (autofs_type_trigger(sbi->type))
                 __managed_dentry_set_managed(root);
-        }
 
         root_inode->i_fop = &autofs4_root_operations;
         root_inode->i_op = &autofs4_dir_inode_operations;
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index dbd95512808..1dba035fc37 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -66,13 +66,7 @@ const struct inode_operations autofs4_dir_inode_operations = {
         .rmdir          = autofs4_dir_rmdir,
 };
 
-/* For dentries that don't initiate mounting */
 const struct dentry_operations autofs4_dentry_operations = {
-        .d_release      = autofs4_dentry_release,
-};
-
-/* For dentries that do initiate mounting */
-const struct dentry_operations autofs4_mount_dentry_operations = {
         .d_automount    = autofs4_d_automount,
         .d_manage       = autofs4_d_manage,
         .d_release      = autofs4_dentry_release,
@@ -500,8 +494,6 @@ static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, s
         if (active) {
                 return active;
         } else {
-                d_set_d_op(dentry, &autofs4_dentry_operations);
-
                 /*
                  * A dentry that is not within the root can never trigger a
                  * mount operation, unless the directory already exists, so we
@@ -512,10 +504,8 @@ static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, s
                         return ERR_PTR(-ENOENT);
 
                 /* Mark entries in the root as mount triggers */
-                if (autofs_type_indirect(sbi->type) && IS_ROOT(dentry->d_parent)) {
-                        d_set_d_op(dentry, &autofs4_mount_dentry_operations);
+                if (autofs_type_indirect(sbi->type) && IS_ROOT(dentry->d_parent))
                         __managed_dentry_set_managed(dentry);
-                }
 
                 ino = autofs4_init_ino(NULL, sbi, 0555);
                 if (!ino)
@@ -572,8 +562,6 @@ static int autofs4_dir_symlink(struct inode *dir,
         }
         d_add(dentry, inode);
 
-        d_set_d_op(dentry, &autofs4_dentry_operations);
-
         dentry->d_fsdata = ino;
         ino->dentry = dget(dentry);
         atomic_inc(&ino->count);
@@ -848,8 +836,7 @@ static inline int autofs4_ask_umount(struct vfsmount *mnt, int __user *p)
 int is_autofs4_dentry(struct dentry *dentry)
 {
         return dentry && dentry->d_inode &&
-                (dentry->d_op == &autofs4_mount_dentry_operations ||
-                 dentry->d_op == &autofs4_dentry_operations) &&
+                dentry->d_op == &autofs4_dentry_operations &&
                 dentry->d_fsdata != NULL;
 }