From 79eb885c96b5ccf8bbffd0dddc4c15a5dd436a1c Mon Sep 17 00:00:00 2001
From: Edward Goggin <egoggin@emc.com>
Date: Wed, 9 May 2007 02:32:56 -0700
Subject: 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>
---
drivers/md/dm-hw-handler.h | 1 +
drivers/md/dm-mpath.c | 3 +++
drivers/md/dm.c | 1 +
3 files changed, 5 insertions(+)
(limited to 'drivers')
diff --git a/drivers/md/dm-hw-handler.h b/drivers/md/dm-hw-handler.h
index 32eff28e4a..e0832e6fcf 100644
--- 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
index 3aa0135069..de54b39e6f 100644
--- 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
index 11a98df298..2717a355dc 100644
--- 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
--
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