staging: lustre: osc: osc_extent should hold refcount to osc_object
authorJinshan Xiong <jinshan.xiong@intel.com>
Thu, 10 Nov 2016 17:30:54 +0000 (12:30 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 14 Nov 2016 15:02:55 +0000 (16:02 +0100)
commitd7f651ad64c2bbf2df47c3cacfbdae95740253eb
tree87afbeadbb0f74d95a9a918a2a8b7e96d84ecf74
parenta80ba5fe758131e456343160dcf12f3af7481d35
staging: lustre: osc: osc_extent should hold refcount to osc_object

To avoid a race that osc_extent and osc_object destroy happens on the
same time, which causes kernel crash.

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7164
Reviewed-on: http://review.whamcloud.com/16433
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Patrick Farrell <paf@cray.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/lustre/lustre/osc/osc_cache.c