LU-4423 lov: use correct env in lov_io_data_version_end()

lov - the logical object volume manager - is responsible for
striping data across multiple volumes.

So when it is given a request, it creates one or more
sub-requests, one for each target volume.  Each sub_io
request has a sub_env environment which it operates in.

When lov_io_data_version_end() calls lov_io_end_wrapper() to
wait for and close off a sub_io, it passes the wrong
environment.

This causes an LINVRNT() to fail in cl2osc_io(), and may
cause other problems.

This patch changes the call to use ->sub_env, much like
other code in the same file.

Change-Id: Id120929f4189196232d18103007e45ba89195fff
Fixes: fcd45488711a (LU-5683 clio: add CIT_DATA_VERSION)
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: https://review.whamcloud.com/31418
Reviewed-by: Jinshan Xiong <jinshan.xiong@gmail.com>
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>

diff --git a/lustre/lov/lov_io.c b/lustre/lov/lov_io.c
index 4c4f32f..7ac4590 100644 (file)
--- a/lustre/lov/lov_io.c
+++ b/lustre/lov/lov_io.c
@@ -956,7 +956,7 @@ lov_io_data_version_end(const struct lu_env *env, const struct cl_io_slice *ios)
        list_for_each_entry(sub, &lio->lis_active, sub_linkage) {
                struct cl_data_version_io *sdv = &sub->sub_io.u.ci_data_version;
 
        list_for_each_entry(sub, &lio->lis_active, sub_linkage) {
                struct cl_data_version_io *sdv = &sub->sub_io.u.ci_data_version;
 

-               lov_io_end_wrapper(env, &sub->sub_io);
+               lov_io_end_wrapper(sub->sub_env, &sub->sub_io);

 
                pdv->dv_data_version += sdv->dv_data_version;
                if (pdv->dv_layout_version > sdv->dv_layout_version)
 
                pdv->dv_data_version += sdv->dv_data_version;
                if (pdv->dv_layout_version > sdv->dv_layout_version)