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| author | Mike Snitzer <snitzer@redhat.com> | 2009-07-23 20:30:40 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-07-23 20:30:40 +0100 |
| commit | a732c207d19e899845ae47139708af898daaf9fd (patch) | |
| tree | aed98221e373868b4fe0fbba9c4fcf5ac8ede128 /drivers/md/dm.c | |
| parent | 69885683d22d8c05910fd808c01fdce1322739b4 (diff) | |
| download | linux-a732c207d19e899845ae47139708af898daaf9fd.tar.gz linux-a732c207d19e899845ae47139708af898daaf9fd.tar.bz2 linux-a732c207d19e899845ae47139708af898daaf9fd.zip | |
dm: remove queue next_ordered workaround for barriers
This patch removes DM's bio-based vs request-based conditional setting
of next_ordered. For bio-based DM the next_ordered check is no longer a
concern (as that check is now in the __make_request path). For
request-based DM the default of QUEUE_ORDERED_NONE is now appropriate.
bio-based DM was changed to work-around the previously misplaced
next_ordered check with this commit:
99360b4c18f7675b50d283301d46d755affe75fd
request-based DM does not yet support barriers but reacted to the above
bio-based DM change with this commit:
5d67aa2366ccb8257d103d0b43df855605c3c086
The above changes are no longer needed given Neil Brown's recent fix to
put the next_ordered check in the __make_request path:
db64f680ba4b5c56c4be59f0698000df89ff0281
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Cc: NeilBrown <neilb@suse.de>
Acked-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Acked-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 9acd54a5cffb..8a311ea0d441 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2203,16 +2203,6 @@ int dm_swap_table(struct mapped_device *md, struct dm_table *table) goto out; } - /* - * It is enought that blk_queue_ordered() is called only once when - * the first bio-based table is bound. - * - * This setting should be moved to alloc_dev() when request-based dm - * supports barrier. - */ - if (!md->map && dm_table_bio_based(table)) - blk_queue_ordered(md->queue, QUEUE_ORDERED_DRAIN, NULL); - __unbind(md); r = __bind(md, table, &limits); |