LU-12542 handle: move refcount into the lustre_handle.

[fs/lustre-release.git] / lustre / mdt / mdt_open.c

diff --git a/lustre/mdt/mdt_open.c b/lustre/mdt/mdt_open.c
index b89abc9..c13fe07 100644 (file)
--- a/lustre/mdt/mdt_open.c
+++ b/lustre/mdt/mdt_open.c
@@ -44,14 +44,9 @@
 #include "mdt_internal.h"
 #include <lustre_nodemap.h>
 
-/* we do nothing because we do not have refcount now */
-static void mdt_mfd_get(void *mfdp)
-{
-}
-
 static const struct portals_handle_ops mfd_open_handle_ops = {
-       .hop_addref = mdt_mfd_get,
        .hop_free   = NULL,
+       .hop_type       = "mdt",
 };
 
 /* Create a new mdt_file_data struct, initialize it,
@@ -63,6 +58,7 @@ struct mdt_file_data *mdt_mfd_new(const struct mdt_export_data *med)
 
        OBD_ALLOC_PTR(mfd);
        if (mfd != NULL) {
+               refcount_set(&mfd->mfd_open_handle.h_ref, 1);
                INIT_LIST_HEAD_RCU(&mfd->mfd_open_handle.h_link);
                mfd->mfd_owner = med;
                INIT_LIST_HEAD(&mfd->mfd_list);
@@ -87,6 +83,9 @@ struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
 
        LASSERT(open_handle != NULL);
        mfd = class_handle2object(open_handle->cookie, &mfd_open_handle_ops);
+       if (mfd)
+               refcount_dec(&mfd->mfd_open_handle.h_ref);
+
        /* during dw/setattr replay the mfd can be found by old handle */
        if ((!mfd || mfd->mfd_owner != med) && is_replay_or_resent) {
                list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
@@ -103,6 +102,7 @@ struct mdt_file_data *mdt_open_handle2mfd(struct mdt_export_data *med,
 /* free mfd */
 void mdt_mfd_free(struct mdt_file_data *mfd)
 {
+       LASSERT(refcount_read(&mfd->mfd_open_handle.h_ref) == 1);
        LASSERT(list_empty(&mfd->mfd_list));
        OBD_FREE_RCU(mfd, sizeof *mfd, &mfd->mfd_open_handle);
 }