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| author | Mikulas Patocka <mpatocka@redhat.com> | 2009-12-10 23:52:01 +0000 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2009-12-10 23:52:01 +0000 |
| commit | 87a8f240e9bcf025ba45e4563c842b0d59c5e8ef (patch) | |
| tree | b6b42a74fc1135c11656d8cf4bf5ea4005c74a77 /drivers/md/dm-log.c | |
| parent | 5adc78d0d231b030405b31759f125f13404fdb64 (diff) | |
| download | lwn-87a8f240e9bcf025ba45e4563c842b0d59c5e8ef.tar.gz lwn-87a8f240e9bcf025ba45e4563c842b0d59c5e8ef.zip | |
dm log: add flush callback fn
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>
Diffstat (limited to 'drivers/md/dm-log.c')
| -rw-r--r-- | drivers/md/dm-log.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c index d779f8c915dd..666a80e3602e 100644 --- a/drivers/md/dm-log.c +++ b/drivers/md/dm-log.c @@ -145,8 +145,9 @@ int dm_dirty_log_type_unregister(struct dm_dirty_log_type *type) EXPORT_SYMBOL(dm_dirty_log_type_unregister); struct dm_dirty_log *dm_dirty_log_create(const char *type_name, - struct dm_target *ti, - unsigned int argc, char **argv) + struct dm_target *ti, + int (*flush_callback_fn)(struct dm_target *ti), + unsigned int argc, char **argv) { struct dm_dirty_log_type *type; struct dm_dirty_log *log; @@ -161,6 +162,7 @@ struct dm_dirty_log *dm_dirty_log_create(const char *type_name, return NULL; } + log->flush_callback_fn = flush_callback_fn; log->type = type; if (type->ctr(log, ti, argc, argv)) { kfree(log); |