Use ecryptfs_dentry_to_lower_path in a couple of places

There are two places in ecryptfs that benefit from using
ecryptfs_dentry_to_lower_path() instead of separate calls to
ecryptfs_dentry_to_lower() and ecryptfs_dentry_to_lower_mnt().  Both
sites use fewer instructions and less stack (determined by examining
objdump output).

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index a7abbea2c096..0943f6f20b1c 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -49,7 +49,7 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb,
                                 unsigned long nr_segs, loff_t pos)
 {
         ssize_t rc;
-        struct path lower;
+        struct path *path;
         struct file *file = iocb->ki_filp;
 
         rc = generic_file_aio_read(iocb, iov, nr_segs, pos);
@@ -60,9 +60,8 @@ static ssize_t ecryptfs_read_update_atime(struct kiocb *iocb,
         if (-EIOCBQUEUED == rc)
                 rc = wait_on_sync_kiocb(iocb);
         if (rc >= 0) {
-                lower.dentry = ecryptfs_dentry_to_lower(file->f_path.dentry);
-                lower.mnt = ecryptfs_dentry_to_lower_mnt(file->f_path.dentry);
-                touch_atime(&lower);
+                path = ecryptfs_dentry_to_lower_path(file->f_path.dentry);
+                touch_atime(path);
         }
         return rc;
 }