LU-2543 llite: wait osc cleanup when put super

[fs/lustre-release.git] / lustre / llite / llite_lib.c

diff --git a/lustre/llite/llite_lib.c b/lustre/llite/llite_lib.c
index c1c9ef3..38bd420 100644 (file)
--- a/lustre/llite/llite_lib.c
+++ b/lustre/llite/llite_lib.c
@@ -595,6 +595,8 @@ out_lock_cn_cb:
 out_dt:
         obd_disconnect(sbi->ll_dt_exp);
         sbi->ll_dt_exp = NULL;
+       /* Make sure all OScs are gone, since cl_cache is accessing sbi. */
+       obd_zombie_barrier();
 out_md_fid:
         obd_fid_fini(sbi->ll_md_exp);
 out_md:
@@ -687,6 +689,9 @@ void client_common_put_super(struct super_block *sb)
         obd_fid_fini(sbi->ll_dt_exp);
         obd_disconnect(sbi->ll_dt_exp);
         sbi->ll_dt_exp = NULL;
+       /* wait till all OSCs are gone, since cl_cache is accessing sbi.
+        * see LU-2543. */
+       obd_zombie_barrier();
 
         lprocfs_unregister_mountpoint(sbi);