LU-1666 obdclass: reduce lock contention on coh_page_guard

[fs/lustre-release.git] / lustre / include / cl_object.h

diff --git a/lustre/include/cl_object.h b/lustre/include/cl_object.h
index b0c11e3..78f0b49 100644 (file)
--- a/lustre/include/cl_object.h
+++ b/lustre/include/cl_object.h
@@ -723,6 +723,8 @@ struct cl_page {
          * modified only internally within cl_page.c. Protected by a VM lock.
          */
         const enum cl_page_state cp_state;
          * modified only internally within cl_page.c. Protected by a VM lock.
          */
         const enum cl_page_state cp_state;

+       /** Protect to get and put page, see cl_page_put and cl_vmpage_page */
+       cfs_spinlock_t           cp_lock;

         /**
          * Linkage of pages within some group. Protected by
          * cl_page::cp_mutex. */
         /**
          * Linkage of pages within some group. Protected by
          * cl_page::cp_mutex. */