This patch adds target interfaces for request-based dm.
Signed-off-by: Kiyoshi Ueda <[EMAIL PROTECTED]>
Signed-off-by: Jun'ichi Nomura <[EMAIL PROTECTED]>
---
include/linux/device-mapper.h | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+)
Index: 2.6.25-rc1/include/linux/device-mapper.h
===================================================================
--- 2.6.25-rc1.orig/include/linux/device-mapper.h
+++ 2.6.25-rc1/include/linux/device-mapper.h
@@ -10,6 +10,8 @@
#ifdef __KERNEL__
+struct request;
+struct request_queue;
struct dm_target;
struct dm_table;
struct dm_dev;
@@ -45,6 +47,9 @@ typedef void (*dm_dtr_fn) (struct dm_tar
typedef int (*dm_map_fn) (struct dm_target *ti, struct bio *bio,
union map_info *map_context);
+typedef int (*dm_map_request_fn) (struct dm_target *ti, struct request *clone,
+ union map_info *map_context);
+
/*
* Returns:
* < 0 : error (currently ignored)
@@ -57,6 +62,18 @@ typedef int (*dm_endio_fn) (struct dm_ta
struct bio *bio, int error,
union map_info *map_context);
+typedef int (*dm_request_endio_first_fn) (struct dm_target *ti,
+ struct request *clone, int error,
+ union map_info *map_context);
+
+typedef int (*dm_request_endio_fn) (struct dm_target *ti,
+ struct request *clone, int error,
+ union map_info *map_context);
+
+typedef void (*dm_request_queue_in_tgt_fn) (struct dm_target *ti,
+ struct request *clone,
+ union map_info *map_context);
+
typedef void (*dm_flush_fn) (struct dm_target *ti);
typedef void (*dm_presuspend_fn) (struct dm_target *ti);
typedef void (*dm_postsuspend_fn) (struct dm_target *ti);
@@ -71,6 +88,7 @@ typedef int (*dm_message_fn) (struct dm_
typedef int (*dm_ioctl_fn) (struct dm_target *ti, struct inode *inode,
struct file *filp, unsigned int cmd,
unsigned long arg);
+typedef int (*dm_congested_fn) (struct dm_target *ti);
void dm_error(const char *message);
@@ -98,7 +116,11 @@ struct target_type {
dm_ctr_fn ctr;
dm_dtr_fn dtr;
dm_map_fn map;
+ dm_map_request_fn map_rq;
dm_endio_fn end_io;
+ dm_request_endio_first_fn rq_end_io_first;
+ dm_request_endio_fn rq_end_io;
+ dm_request_queue_in_tgt_fn queue_in_tgt;
dm_flush_fn flush;
dm_presuspend_fn presuspend;
dm_postsuspend_fn postsuspend;
@@ -107,6 +129,7 @@ struct target_type {
dm_status_fn status;
dm_message_fn message;
dm_ioctl_fn ioctl;
+ dm_congested_fn congested;
};
struct io_restrictions {
-
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