locks: New ops in lock_manager_operations for get/put owner
NFSD or other lockmanager may increase the owner's reference,
so adds two new options for copying and releasing owner.
v5: change order from 2/6 to 3/6
v4: rename lm_copy_owner/lm_release_owner to lm_get_owner/lm_put_owner
Reviewed-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
diff --git a/fs/locks.c b/fs/locks.c
index ec9becd..5e83f3a 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -230,8 +230,12 @@
fl->fl_ops->fl_release_private(fl);
fl->fl_ops = NULL;
}
- fl->fl_lmops = NULL;
+ if (fl->fl_lmops) {
+ if (fl->fl_lmops->lm_put_owner)
+ fl->fl_lmops->lm_put_owner(fl);
+ fl->fl_lmops = NULL;
+ }
}
EXPORT_SYMBOL_GPL(locks_release_private);
@@ -274,8 +278,12 @@
fl->fl_ops->fl_copy_lock(new, fl);
new->fl_ops = fl->fl_ops;
}
- if (fl->fl_lmops)
+
+ if (fl->fl_lmops) {
+ if (fl->fl_lmops->lm_get_owner)
+ fl->fl_lmops->lm_get_owner(new, fl);
new->fl_lmops = fl->fl_lmops;
+ }
}
/*