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>
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@ -16,6 +16,7 @@
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struct hw_handler_type;
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struct hw_handler {
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struct hw_handler_type *type;
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struct mapped_device *md;
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void *context;
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};
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@ -668,6 +668,9 @@ static int parse_hw_handler(struct arg_set *as, struct multipath *m)
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return -EINVAL;
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}
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m->hw_handler.md = dm_table_get_md(ti->table);
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dm_put(m->hw_handler.md);
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r = hwht->create(&m->hw_handler, hw_argc - 1, as->argv);
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if (r) {
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dm_put_hw_handler(hwht);
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@ -1236,6 +1236,7 @@ void dm_put(struct mapped_device *md)
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free_dev(md);
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}
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}
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EXPORT_SYMBOL_GPL(dm_put);
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/*
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* Process the deferred bios
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