dm mpath: log device name

Make the mapped device structure accessible to hardware handlers so error messages can include the device name. Signed-off-by: Edward Goggin <egoggin@emc.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
git-mirror · May 9, 2007 · 79eb885 · 79eb885
1 parent 46b4773
commit 79eb885
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diff --git a/drivers/md/dm-hw-handler.h b/drivers/md/dm-hw-handler.h
@@ -16,6 +16,7 @@
 struct hw_handler_type;
 struct hw_handler {
 	struct hw_handler_type *type;
+	struct mapped_device *md;
 	void *context;
 };
 

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
@@ -668,6 +668,9 @@ static int parse_hw_handler(struct arg_set *as, struct multipath *m)
 		return -EINVAL;
 	}
 
+	m->hw_handler.md = dm_table_get_md(ti->table);
+	dm_put(m->hw_handler.md);
+
 	r = hwht->create(&m->hw_handler, hw_argc - 1, as->argv);
 	if (r) {
 		dm_put_hw_handler(hwht);

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
@@ -1236,6 +1236,7 @@ void dm_put(struct mapped_device *md)
 		free_dev(md);
 	}
 }
+EXPORT_SYMBOL_GPL(dm_put);
 
 /*
  * Process the deferred bios
-Original file line number
+Diff line change
@@ Expand Up / @@ -1236,6 +1236,7 @@ void dm_put(struct mapped_device *md) @@
     		free_dev(md);
     	}
     }
+    EXPORT_SYMBOL_GPL(dm_put);
     /*
      * Process the deferred bios
@@ Expand Down @@