Export map_info (part of bio->bi_private) for targets like
multipath to use for storing context.
Signed-Off-By: Alasdair G Kergon <[EMAIL PROTECTED]>
--- diff/drivers/md/dm.c 2005-02-08 16:38:49.000000000 +0000
+++ source/drivers/md/dm.c 2005-02-08 16:41:09.000000000 +0000
@@ -43,6 +43,13 @@
union map_info info;
};
+union map_info *dm_get_mapinfo(struct bio *bio)
+{
+ if (bio && bio->bi_private)
+ return &((struct target_io *)bio->bi_private)->info;
+ return NULL;
+}
+
/*
* Bits for the md->flags field.
*/
@@ -1164,6 +1171,8 @@
.owner = THIS_MODULE
};
+EXPORT_SYMBOL(dm_get_mapinfo);
+
/*
* module hooks
*/
--- diff/drivers/md/dm.h 2005-02-08 16:39:46.000000000 +0000
+++ source/drivers/md/dm.h 2005-02-08 16:41:09.000000000 +0000
@@ -190,5 +190,6 @@
void dm_stripe_exit(void);
void *dm_vcalloc(unsigned long nmemb, unsigned long elem_size);
+union map_info *dm_get_mapinfo(struct bio *bio);
#endif
-
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