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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-03 10:02:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-03 10:02:45 -0700
commitd9b9be024a6628a01d8730d1fd0b5f25658a2794 (patch)
tree9f8e606f975f6dff4213747e85fedaccd148eb60 /include/linux
parent9b59f0316bc556a1b63518f0b1224cf9be48467b (diff)
parent99360b4c18f7675b50d283301d46d755affe75fd (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm
* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: (36 commits) dm: set queue ordered mode dm: move wait queue declaration dm: merge pushback and deferred bio lists dm: allow uninterruptible wait for pending io dm: merge __flush_deferred_io into caller dm: move bio_io_error into __split_and_process_bio dm: rename __split_bio dm: remove unnecessary struct dm_wq_req dm: remove unnecessary work queue context field dm: remove unnecessary work queue type field dm: bio list add bio_list_add_head dm snapshot: persistent fix dtr cleanup dm snapshot: move status to exception store dm snapshot: move ctr parsing to exception store dm snapshot: use DMEMIT macro for status dm snapshot: remove dm_snap header dm snapshot: remove dm_snap header use dm exception store: move cow pointer dm exception store: move chunk_fields dm exception store: move dm_target pointer ...
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/device-mapper.h3
-rw-r--r--include/linux/dm-dirty-log.h13
2 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 8209e08969f..66ec05a5795 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -139,6 +139,9 @@ struct target_type {
dm_ioctl_fn ioctl;
dm_merge_fn merge;
dm_busy_fn busy;
+
+ /* For internal device-mapper use. */
+ struct list_head list;
};
struct io_restrictions {
diff --git a/include/linux/dm-dirty-log.h b/include/linux/dm-dirty-log.h
index 600c5fb2daa..5e8b11d88f6 100644
--- a/include/linux/dm-dirty-log.h
+++ b/include/linux/dm-dirty-log.h
@@ -28,6 +28,9 @@ struct dm_dirty_log_type {
const char *name;
struct module *module;
+ /* For internal device-mapper use */
+ struct list_head list;
+
int (*ctr)(struct dm_dirty_log *log, struct dm_target *ti,
unsigned argc, char **argv);
void (*dtr)(struct dm_dirty_log *log);
@@ -113,6 +116,16 @@ struct dm_dirty_log_type {
*/
int (*status)(struct dm_dirty_log *log, status_type_t status_type,
char *result, unsigned maxlen);
+
+ /*
+ * is_remote_recovering is necessary for cluster mirroring. It provides
+ * a way to detect recovery on another node, so we aren't writing
+ * concurrently. This function is likely to block (when a cluster log
+ * is used).
+ *
+ * Returns: 0, 1
+ */
+ int (*is_remote_recovering)(struct dm_dirty_log *log, region_t region);
};
int dm_dirty_log_type_register(struct dm_dirty_log_type *type);