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dm log: add flush callback fn

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Introduce a callback pointer from the log to dm-raid1 layer.

Before some region is set as "in-sync", we need to flush hardware cache on
all the disks. But the log module doesn't have access to the mirror_set
structure. So it will use this callback.

So far the callback is unused, it will be used in further patches.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Mikulas Patocka
2009-12-10 23:52:01 +00:00
committed by Alasdair G Kergon
parent 5adc78d0d2
commit 87a8f240e9
3 changed files with 9 additions and 5 deletions
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2
drivers/md/dm-raid1.c
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@@ -896,7 +896,7 @@ static struct dm_dirty_log *create_dirty_log(struct dm_target *ti,
return NULL;
}
dl = dm_dirty_log_create(argv[0], ti, param_count, argv + 2);
dl = dm_dirty_log_create(argv[0], ti, NULL, param_count, argv + 2);
if (!dl) {
ti->error = "Error creating mirror dirty log";
return NULL;