[lxc-devel] [PATCH] add support for dirsync mount option

[Sergey S. Kostyliov]

Add support for `dirsync' mount option. MS_DIRSYNC is on of the
mount(2) mountflags so don't send it as extra mount option to avoid:

 	lxc-start: Invalid argument - failed to mount ...

errors.

Signed-off-by: Sergey S. Kostyliov <rathamahata at gmail.com>
---
 src/lxc/conf.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/src/lxc/conf.c b/src/lxc/conf.c
index e4e4bb5..73913c2 100644
--- a/src/lxc/conf.c
+++ b/src/lxc/conf.c
@@ -68,6 +68,10 @@ lxc_log_define(lxc_conf, lxc);
 #define MAXMTULEN   16
 #define MAXLINELEN  128
 
+#ifndef MS_DIRSYNC
+#define MS_DIRSYNC  128
+#endif
+
 #ifndef MS_REC
 #define MS_REC 16384
 #endif
@@ -133,6 +137,7 @@ static struct mount_opt mount_opt[] = {
 	{ "noexec",     0, MS_NOEXEC      },
 	{ "sync",       0, MS_SYNCHRONOUS },
 	{ "async",      1, MS_SYNCHRONOUS },
+	{ "dirsync",    0, MS_DIRSYNC     },
 	{ "remount",    0, MS_REMOUNT     },
 	{ "mand",       0, MS_MANDLOCK    },
 	{ "nomand",     1, MS_MANDLOCK    },
-- 
1.7.3.2