commit 4330397e4e8a662f36d101659e2a59ce32e76ff4
author hujianyang <hujianyang@huawei.com> Thu Dec 11 10:30:18 2014 +0800
committer Miklos Szeredi <mszeredi@suse.cz> Fri Jan 09 14:55:57 2015 +0100
tree 77ad4a8e29eaa3a02a88ab358569817e7991ab5f
parent 6d900f5a33393067e370736d39798f814f5e25cc

ovl: discard independent cursor in readdir()

Since the ovl_dir_cache is stable during a directory reading, the cursor
of struct ovl_dir_file don't need to be an independent entry in the list
of a merged directory.

This patch changes *cursor* to a pointer which points to the entry in the
ovl_dir_cache. After this, we don't need to check *is_cursor* either.

Signed-off-by: hujianyang <hujianyang@huawei.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>