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authorMikulas Patocka <mpatocka@redhat.com>2009-12-11 02:52:01 +0300
committerAlasdair G Kergon <agk@redhat.com>2009-12-11 02:52:01 +0300
commit87a8f240e9bcf025ba45e4563c842b0d59c5e8ef (patch)
treeb6b42a74fc1135c11656d8cf4bf5ea4005c74a77 /include/linux/dm-dirty-log.h
parent5adc78d0d231b030405b31759f125f13404fdb64 (diff)
downloadlinux-87a8f240e9bcf025ba45e4563c842b0d59c5e8ef.tar.xz
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 'include/linux/dm-dirty-log.h')
-rw-r--r--include/linux/dm-dirty-log.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/dm-dirty-log.h b/include/linux/dm-dirty-log.h
index 5e8b11d88f6f..7084503c3405 100644
--- a/include/linux/dm-dirty-log.h
+++ b/include/linux/dm-dirty-log.h
@@ -21,6 +21,7 @@ struct dm_dirty_log_type;
struct dm_dirty_log {
struct dm_dirty_log_type *type;
+ int (*flush_callback_fn)(struct dm_target *ti);
void *context;
};
@@ -136,8 +137,9 @@ int dm_dirty_log_type_unregister(struct dm_dirty_log_type *type);
* type->constructor/destructor() directly.
*/
struct dm_dirty_log *dm_dirty_log_create(const char *type_name,
- struct dm_target *ti,
- unsigned argc, char **argv);
+ struct dm_target *ti,
+ int (*flush_callback_fn)(struct dm_target *ti),
+ unsigned argc, char **argv);
void dm_dirty_log_destroy(struct dm_dirty_log *log);
#endif /* __KERNEL__ */