diff options
| author | Kiyoshi Ueda <k-ueda@ct.jp.nec.com> | 2008-10-21 20:45:07 +0400 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2008-10-21 20:45:07 +0400 |
| commit | f431d9666fd6e69fbaf305cebc7278d1428950c2 (patch) | |
| tree | ebd0e7c5deb3e6782f0de657223d071bc11b1983 /drivers/md/dm.c | |
| parent | 1f965b19437017cea6d3f3f46acdc5acae5fd011 (diff) | |
| download | linux-f431d9666fd6e69fbaf305cebc7278d1428950c2.tar.xz | |
dm: remove unused flush_all
This patch removes the DM_WQ_FLUSH_ALL state that is unnecessary.
The dm_queue_flush(md, DM_WQ_FLUSH_ALL, NULL) in dm_suspend()
is never invoked because:
- 'goto flush_and_out' is the same as 'goto out' because
the 'goto flush_and_out' is called only when '!noflush'
- If r is non-zero, then the code above will invoke 'goto out'
and skip this code.
No functional change.
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Signed-off-by: Milan Broz <mbroz@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 | 14 |
1 files changed, 1 insertions, 13 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 829d9fc66453..6938bfeb5e2c 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -76,7 +76,6 @@ union map_info *dm_get_mapinfo(struct bio *bio) */ struct dm_wq_req { enum { - DM_WQ_FLUSH_ALL, DM_WQ_FLUSH_DEFERRED, } type; struct work_struct work; @@ -1395,9 +1394,6 @@ static void dm_wq_work(struct work_struct *work) down_write(&md->io_lock); switch (req->type) { - case DM_WQ_FLUSH_ALL: - __merge_pushback_list(md); - /* pass through */ case DM_WQ_FLUSH_DEFERRED: __flush_deferred_io(md); break; @@ -1527,7 +1523,7 @@ int dm_suspend(struct mapped_device *md, unsigned suspend_flags) if (!md->suspended_bdev) { DMWARN("bdget failed in dm_suspend"); r = -ENOMEM; - goto flush_and_out; + goto out; } /* @@ -1578,14 +1574,6 @@ int dm_suspend(struct mapped_device *md, unsigned suspend_flags) set_bit(DMF_SUSPENDED, &md->flags); -flush_and_out: - if (r && noflush) - /* - * Because there may be already I/Os in the pushback list, - * flush them before return. - */ - dm_queue_flush(md, DM_WQ_FLUSH_ALL, NULL); - out: if (r && md->suspended_bdev) { bdput(md->suspended_bdev); |