autofs: path_{get,put}() cleanups

Here are some more places where path_{get,put}() can be used instead of
dput()/mntput() pair.  Besides that it fixes a bug in autofs4_mount_busy()
where mntput() was called before dput().

Signed-off-by: Jan Blunck <jblunck@suse.de>
Cc: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 6 deletions

diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 6e250030a690..edf5b6bddb52 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -146,17 +146,17 @@ static int autofs4_dir_open(struct inode *inode, struct file *file)
 
         if (d_mountpoint(dentry)) {
                 struct file *fp = NULL;
-                struct vfsmount *fp_mnt = mntget(mnt);
-                struct dentry *fp_dentry = dget(dentry);
+                struct path fp_path = { .dentry = dentry, .mnt = mnt };
 
-                if (!autofs4_follow_mount(&fp_mnt, &fp_dentry)) {
-                        dput(fp_dentry);
-                        mntput(fp_mnt);
+                path_get(&fp_path);
+
+                if (!autofs4_follow_mount(&fp_path.mnt, &fp_path.dentry)) {
+                        path_put(&fp_path);
                         dcache_dir_close(inode, file);
                         goto out;
                 }
 
-                fp = dentry_open(fp_dentry, fp_mnt, file->f_flags);
+                fp = dentry_open(fp_path.dentry, fp_path.mnt, file->f_flags);
                 status = PTR_ERR(fp);
                 if (IS_ERR(fp)) {
                         dcache_dir_close(inode, file);