GIT: unionfs2-2.6.27.y: Unionfs: remove unnecessary lower atime updates

[Erez Zadok]

commit 58269eae26ac8d509c2d23440a1c82d46f572286
Author: Erez Zadok <ezk at cs.sunysb.edu>
Date:   Sun Nov 11 18:34:34 2007 -0500

    Unionfs: remove unnecessary lower atime updates
    
    No need for this because our readpage calls vfs_read on the lower objects,
    which would update the atime as/if needed.
    
    Signed-off-by: Erez Zadok <ezk at cs.sunysb.edu>

diff --git a/fs/unionfs/file.c b/fs/unionfs/file.c
index 126df5e..809e0f1 100644
--- a/fs/unionfs/file.c
+++ b/fs/unionfs/file.c
@@ -31,10 +31,6 @@ static ssize_t unionfs_read(struct file *file, char __user *buf,
 
 	err = do_sync_read(file, buf, count, ppos);
 
-	if (err >= 0)
-		touch_atime(unionfs_lower_mnt(file->f_path.dentry),
-			    unionfs_lower_dentry(file->f_path.dentry));
-
 out:
 	unionfs_read_unlock(file->f_path.dentry->d_sb);
 	unionfs_check_file(file);
@@ -58,10 +54,6 @@ static ssize_t unionfs_aio_read(struct kiocb *iocb, const struct iovec *iov,
 	if (err == -EIOCBQUEUED)
 		err = wait_on_sync_kiocb(iocb);
 
-	if (err >= 0)
-		touch_atime(unionfs_lower_mnt(file->f_path.dentry),
-			    unionfs_lower_dentry(file->f_path.dentry));
-
 out:
 	unionfs_read_unlock(file->f_path.dentry->d_sb);
 	unionfs_check_file(file);
diff --git a/fs/unionfs/mmap.c b/fs/unionfs/mmap.c
index bb00fd5..34fd8aa 100644
--- a/fs/unionfs/mmap.c
+++ b/fs/unionfs/mmap.c
@@ -212,12 +212,6 @@ static int unionfs_readpage(struct file *file, struct page *page)
 
 	err = unionfs_do_readpage(file, page);
 
-	if (!err) {
-		touch_atime(unionfs_lower_mnt(file->f_path.dentry),
-			    unionfs_lower_dentry(file->f_path.dentry));
-		unionfs_copy_attr_times(file->f_path.dentry->d_inode);
-	}
-
 	/*
 	 * we have to unlock our page, b/c we _might_ have gotten a locked
 	 * page.  but we no longer have to wakeup on our page here, b/c