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path: root/fs/ocfs2/dlm/dlmmaster.c
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Diffstat (limited to 'fs/ocfs2/dlm/dlmmaster.c')
-rw-r--r--fs/ocfs2/dlm/dlmmaster.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index b36cce034ea0..6cfbdf282d46 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -1967,6 +1967,7 @@ ok:
spin_unlock(&mle->spinlock);
if (res) {
+ int wake = 0;
spin_lock(&res->spinlock);
if (mle->type == DLM_MLE_MIGRATION) {
mlog(0, "finishing off migration of lockres %.*s, "
@@ -1974,6 +1975,7 @@ ok:
res->lockname.len, res->lockname.name,
dlm->node_num, mle->new_master);
res->state &= ~DLM_LOCK_RES_MIGRATING;
+ wake = 1;
dlm_change_lockres_owner(dlm, res, mle->new_master);
BUG_ON(res->state & DLM_LOCK_RES_DIRTY);
} else {
@@ -1981,6 +1983,8 @@ ok:
}
spin_unlock(&res->spinlock);
have_lockres_ref = 1;
+ if (wake)
+ wake_up(&res->wq);
}
/* master is known, detach if not already detached.
@@ -2342,7 +2346,7 @@ static int dlm_migrate_lockres(struct dlm_ctxt *dlm,
struct list_head *queue, *iter;
int i;
struct dlm_lock *lock;
- int empty = 1;
+ int empty = 1, wake = 0;
if (!dlm_grab(dlm))
return -EINVAL;
@@ -2467,6 +2471,7 @@ static int dlm_migrate_lockres(struct dlm_ctxt *dlm,
res->lockname.name, target);
spin_lock(&res->spinlock);
res->state &= ~DLM_LOCK_RES_MIGRATING;
+ wake = 1;
spin_unlock(&res->spinlock);
ret = -EINVAL;
}
@@ -2525,6 +2530,7 @@ fail:
dlm_put_mle_inuse(mle);
spin_lock(&res->spinlock);
res->state &= ~DLM_LOCK_RES_MIGRATING;
+ wake = 1;
spin_unlock(&res->spinlock);
goto leave;
}
@@ -2567,6 +2573,7 @@ fail:
dlm_put_mle_inuse(mle);
spin_lock(&res->spinlock);
res->state &= ~DLM_LOCK_RES_MIGRATING;
+ wake = 1;
spin_unlock(&res->spinlock);
goto leave;
}
@@ -2595,6 +2602,11 @@ leave:
if (ret < 0)
dlm_kick_thread(dlm, res);
+ /* wake up waiters if the MIGRATING flag got set
+ * but migration failed */
+ if (wake)
+ wake_up(&res->wq);
+
/* TODO: cleanup */
if (mres)
free_page((unsigned long)mres);