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dm flakey: use dm_target_offset and support discards
author
Mike Snitzer
<snitzer@redhat.com>
Tue, 2 Aug 2011 11:32:05 +0000
(12:32 +0100)
committer
Alasdair G Kergon
<agk@redhat.com>
Tue, 2 Aug 2011 11:32:05 +0000
(12:32 +0100)
Use dm_target_offset() and support discards.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
drivers/md/dm-flakey.c
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diff --git
a/drivers/md/dm-flakey.c
b/drivers/md/dm-flakey.c
index
ea79062
..
70a69b2
100644
(file)
--- a/
drivers/md/dm-flakey.c
+++ b/
drivers/md/dm-flakey.c
@@
-79,6
+79,7
@@
static int flakey_ctr(struct dm_target *ti, unsigned int argc, char **argv)
}
ti->num_flush_requests = 1;
+ ti->num_discard_requests = 1;
ti->private = fc;
return 0;
@@
-99,7
+100,7
@@
static sector_t flakey_map_sector(struct dm_target *ti, sector_t bi_sector)
{
struct flakey_c *fc = ti->private;
- return fc->start +
(bi_sector - ti->begin
);
+ return fc->start +
dm_target_offset(ti, bi_sector
);
}
static void flakey_map_bio(struct dm_target *ti, struct bio *bio)