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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>
This commit is contained in:
Edward Goggin 2007-05-09 02:32:56 -07:00 committed by Linus Torvalds
parent 46b477306a
commit 79eb885c96
3 changed files with 5 additions and 0 deletions
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1
drivers/md/dm-hw-handler.h
View File

@ -16,6 +16,7 @@
struct hw_handler_type; struct hw_handler_type;
struct hw_handler { struct hw_handler {
struct hw_handler_type *type; struct hw_handler_type *type;
struct mapped_device *md;
void *context; void *context;
}; };

3
drivers/md/dm-mpath.c
View File

@ -668,6 +668,9 @@ static int parse_hw_handler(struct arg_set *as, struct multipath *m)
return -EINVAL; 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); r = hwht->create(&m->hw_handler, hw_argc - 1, as->argv);
if (r) { if (r) {
dm_put_hw_handler(hwht); dm_put_hw_handler(hwht);

1
drivers/md/dm.c
View File

@ -1236,6 +1236,7 @@ void dm_put(struct mapped_device *md)
free_dev(md); free_dev(md);
} }
} }
EXPORT_SYMBOL_GPL(dm_put);
/* /*
* Process the deferred bios * Process the deferred bios