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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 /include/linux/dm-dirty-log.h | |
| parent | 5adc78d0d231b030405b31759f125f13404fdb64 (diff) | |
| download | blackbird-op-linux-87a8f240e9bcf025ba45e4563c842b0d59c5e8ef.tar.gz blackbird-op-linux-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 'include/linux/dm-dirty-log.h')
| -rw-r--r-- | include/linux/dm-dirty-log.h | 6 |
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__ */ |
