vfs: make fchmodat retry once on ESTALE errors

[mirror_ubuntu-bionic-kernel.git] / fs / dlm / lock.c

diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index b56950758188d4b72f4ed2e193047ab1aded8c8b..a579f30f237d46d2bb26b9d1dbe76bf68e22ae79 100644 (file)
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -5393,6 +5393,13 @@ static void purge_dead_list(struct dlm_ls *ls, struct dlm_rsb *r,
                if ((lkb->lkb_nodeid == nodeid_gone) ||
                    dlm_is_removed(ls, lkb->lkb_nodeid)) {
 
+                       /* tell recover_lvb to invalidate the lvb
+                          because a node holding EX/PW failed */
+                       if ((lkb->lkb_exflags & DLM_LKF_VALBLK) &&
+                           (lkb->lkb_grmode >= DLM_LOCK_PW)) {
+                               rsb_set_flag(r, RSB_RECOVER_LVB_INVAL);
+                       }
+
                        del_lkb(r, lkb);
 
                        /* this put should free the lkb */
@@ -6025,15 +6032,18 @@ static int orphan_proc_lock(struct dlm_ls *ls, struct dlm_lkb *lkb)
        return error;
 }
 
-/* The force flag allows the unlock to go ahead even if the lkb isn't granted.
-   Regardless of what rsb queue the lock is on, it's removed and freed. */
+/* The FORCEUNLOCK flag allows the unlock to go ahead even if the lkb isn't
+   granted.  Regardless of what rsb queue the lock is on, it's removed and
+   freed.  The IVVALBLK flag causes the lvb on the resource to be invalidated
+   if our lock is PW/EX (it's ignored if our granted mode is smaller.) */
 
 static int unlock_proc_lock(struct dlm_ls *ls, struct dlm_lkb *lkb)
 {
        struct dlm_args args;
        int error;
 
-       set_unlock_args(DLM_LKF_FORCEUNLOCK, lkb->lkb_ua, &args);
+       set_unlock_args(DLM_LKF_FORCEUNLOCK | DLM_LKF_IVVALBLK,
+                       lkb->lkb_ua, &args);
 
        error = unlock_lock(ls, lkb, &args);
        if (error == -DLM_EUNLOCK)