From: Erez Zadok <ezk@fsl.cs.sunysb.edu>
Date: Thu, 23 Oct 2014 22:14:38 +0000 (+0200)
Subject: overlayfs: implement show_options
X-Git-Tag: fixes-against-v3.18-rc2~5^2~4^2~2
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f45827e84186af152492c6d0dcf4105b4a605f9b;p=pandora-kernel.git

overlayfs: implement show_options

This is useful because of the stacking nature of overlayfs.  Users like to
find out (via /proc/mounts) which lower/upper directory were used at mount
time.

AV: even failing ovl_parse_opt() could've done some kstrdup()
AV: failure of ovl_alloc_entry() should end up with ENOMEM, not EINVAL

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
---

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