[PATCH] autofs4: remove update_atime unused function

Remove the update of i_atime from autofs4 in favour of having VFS update it.
i_atime is never used for expire in autofs4.

Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 34 deletions

diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 3a4a5b47575c..72dca3335e25 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -84,24 +84,6 @@ static int autofs4_root_readdir(struct file *file, void *dirent,
         return dcache_readdir(file, dirent, filldir);
 }
 
-/* Update usage from here to top of tree, so that scan of
-   top-level directories will give a useful result */
-static void autofs4_update_usage(struct vfsmount *mnt, struct dentry *dentry)
-{
-        struct dentry *top = dentry->d_sb->s_root;
-
-        spin_lock(&dcache_lock);
-        for(; dentry != top; dentry = dentry->d_parent) {
-                struct autofs_info *ino = autofs4_dentry_ino(dentry);
-
-                if (ino) {
-                        touch_atime(mnt, dentry);
-                        ino->last_used = jiffies;
-                }
-        }
-        spin_unlock(&dcache_lock);
-}
-
 static int autofs4_dir_open(struct inode *inode, struct file *file)
 {
         struct dentry *dentry = file->f_dentry;
@@ -246,10 +228,9 @@ out:
         return dcache_readdir(file, dirent, filldir);
 }
 
-static int try_to_fill_dentry(struct vfsmount *mnt, struct dentry *dentry, int flags)
+static int try_to_fill_dentry(struct dentry *dentry, int flags)
 {
-        struct super_block *sb = mnt->mnt_sb;
-        struct autofs_sb_info *sbi = autofs4_sbi(sb);
+        struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
         struct autofs_info *ino = autofs4_dentry_ino(dentry);
         int status = 0;
 
@@ -323,13 +304,6 @@ static int try_to_fill_dentry(struct vfsmount *mnt, struct dentry *dentry, int f
                 }
         }
 
-        /*
-         * We don't update the usages for the autofs daemon itself, this
-         * is necessary for recursive autofs mounts
-         */
-        if (!autofs4_oz_mode(sbi))
-                autofs4_update_usage(mnt, dentry);
-
         /* Initialize expiry counter after successful mount */
         if (ino)
                 ino->last_used = jiffies;
@@ -357,7 +331,7 @@ static int autofs4_revalidate(struct dentry *dentry, struct nameidata *nd)
         /* Pending dentry */
         if (autofs4_ispending(dentry)) {
                 if (!oz_mode)
-                        status = try_to_fill_dentry(nd->mnt, dentry, flags);
+                        status = try_to_fill_dentry(dentry, flags);
                 return status;
         }
 
@@ -374,15 +348,11 @@ static int autofs4_revalidate(struct dentry *dentry, struct nameidata *nd)
                          dentry, dentry->d_name.len, dentry->d_name.name);
                 spin_unlock(&dcache_lock);
                 if (!oz_mode)
-                        status = try_to_fill_dentry(nd->mnt, dentry, flags);
+                        status = try_to_fill_dentry(dentry, flags);
                 return status;
         }
         spin_unlock(&dcache_lock);
 
-        /* Update the usage list */
-        if (!oz_mode)
-                autofs4_update_usage(nd->mnt, dentry);
-
         return 1;
 }