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dm: move target request nr to dm_target_io

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This patch moves target_request_nr from map_info to dm_target_io and
makes it accessible with dm_bio_get_target_request_nr.

This patch is a preparation for the next patch that removes map_info.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Mikulas Patocka
2012-12-21 20:23:39 +00:00
committed by Alasdair G Kergon
parent 42bc954f2a
commit ddbd658f64
4 changed files with 15 additions and 8 deletions
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3
drivers/md/dm.c
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@@ -1099,6 +1099,7 @@ static struct dm_target_io *alloc_tio(struct clone_info *ci,
tio->io = ci->io;
tio->ti = ti;
memset(&tio->info, 0, sizeof(tio->info));
tio->target_request_nr = 0;
return tio;
}
@@ -1109,7 +1110,7 @@ static void __issue_target_request(struct clone_info *ci, struct dm_target *ti,
struct dm_target_io *tio = alloc_tio(ci, ti, ci->bio->bi_max_vecs);
struct bio *clone = &tio->clone;
tio->info.target_request_nr = request_nr;
tio->target_request_nr = request_nr;
/*
* Discard requests require the bio's inline iovecs be initialized.