staging/lustre: Add documentation for unstable_stats in sysfs

commit ac5b14810952 ("staging: lustre: osc: Track and limit
"unstable" pages") added a new sysfs variable, but corresponding bit of
documentation was not forgotten.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/lustre/sysfs-fs-lustre b/drivers/staging/lustre/sysfs-fs-lustre
index 873e2cf312176cb1bceed54e27ec10d6909b9cd9..20206ba965affe333423de87fe6b470a026953ba 100644 (file)
--- a/drivers/staging/lustre/sysfs-fs-lustre
+++ b/drivers/staging/lustre/sysfs-fs-lustre
@@ -294,6 +294,14 @@ Description:
                Controls extended attributes client-side cache.
                1 to enable, 0 to disable.
 
+What:          /sys/fs/lustre/llite/<fsname>-<uuid>/unstable_stats
+Date:          Apr 2016
+Contact:       "Oleg Drokin" <oleg.drokin@intel.com>
+Description:
+               Shows number of pages that were sent and acknowledged by
+               server but were not yet committed and therefore still
+               pinned in client memory even though no longer dirty.
+
 What:          /sys/fs/lustre/ldlm/cancel_unused_locks_before_replay
 Date:          May 2015
 Contact:       "Oleg Drokin" <oleg.drokin@intel.com>