This patch removes dead codes for the noflush suspend.
No functional change.

The dm_queue_flush(md, DM_WQ_FLUSH_ALL, NULL) in dm_suspend()
is never invoked because:
- The 'goto flush_and_out' is same as 'goto out', because
the 'goto flush_and_out' is called only when '!noflush'
- If the 'r && noflush' is true, the interrupt check code above
is invoked and 'goto out'

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>
---
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 bca448e..83b0c64 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;
@@ -1384,9 +1383,6 @@ 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;
@@ -1516,7 +1512,7 @@ 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;
}

/*
@@ -1567,14 +1563,6 @@ 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);


--
dm-devel mailing list
dm-devel@redhat.com
https://www.redhat.com/mailman/listinfo/dm-devel