From: Milan Broz <[email protected]>
This patch ports dm-raid1.c to the new dm-io interface.
Signed-off-by: Milan Broz <[email protected]>
Signed-off-by: Alasdair G Kergon <[email protected]>
---
drivers/md/dm-raid1.c | 25 +++++++++++++++++++++----
1 files changed, 21 insertions(+), 4 deletions(-)
Index: linux-2.6.21/drivers/md/dm-raid1.c
===================================================================
--- linux-2.6.21.orig/drivers/md/dm-raid1.c 2007-05-01 17:40:51.000000000 +0100
+++ linux-2.6.21/drivers/md/dm-raid1.c 2007-05-01 17:40:54.000000000 +0100
@@ -21,6 +21,7 @@
#include <linux/workqueue.h>
#define DM_MSG_PREFIX "raid1"
+#define DM_IO_PAGES 64
#define DM_RAID1_HANDLE_ERRORS 0x01
@@ -126,6 +127,8 @@ struct mirror_set {
struct bio_list reads;
struct bio_list writes;
+ struct dm_io_client *io_client;
+
/* recovery */
region_t nr_regions;
int in_sync;
@@ -796,6 +799,14 @@ static void do_write(struct mirror_set *
unsigned int i;
struct io_region io[KCOPYD_MAX_REGIONS+1];
struct mirror *m;
+ struct dm_io_request io_req = {
+ .bi_rw = WRITE,
+ .mem.type = DM_IO_BVEC,
+ .mem.ptr.bvec = bio->bi_io_vec + bio->bi_idx,
+ .notify.fn = write_callback,
+ .notify.context = bio,
+ .client = ms->io_client,
+ };
for (i = 0; i < ms->nr_mirrors; i++) {
m = ms->mirror + i;
@@ -806,9 +817,8 @@ static void do_write(struct mirror_set *
}
bio_set_ms(bio, ms);
- dm_io_async_bvec(ms->nr_mirrors, io, WRITE,
- bio->bi_io_vec + bio->bi_idx,
- write_callback, bio);
+
+ (void) dm_io(&io_req, ms->nr_mirrors, io, NULL);
}
static void do_writes(struct mirror_set *ms, struct bio_list *writes)
@@ -924,6 +934,13 @@ static struct mirror_set *alloc_context(
ms->in_sync = 0;
ms->default_mirror = &ms->mirror[DEFAULT_MIRROR];
+ ms->io_client = dm_io_client_create(DM_IO_PAGES);
+ if (IS_ERR(ms->io_client)) {
+ ti->error = "Error creating dm_io client";
+ kfree(ms);
+ return NULL;
+ }
+
if (rh_init(&ms->rh, ms, dl, region_size, ms->nr_regions)) {
ti->error = "Error creating dirty region hash";
kfree(ms);
@@ -939,6 +956,7 @@ static void free_context(struct mirror_s
while (m--)
dm_put_device(ti, ms->mirror[m].dev);
+ dm_io_client_destroy(ms->io_client);
rh_exit(&ms->rh);
kfree(ms);
}
@@ -1062,7 +1080,6 @@ static int parse_features(struct mirror_
*
* If present, features must be "handle_errors".
*/
-#define DM_IO_PAGES 64
static int mirror_ctr(struct dm_target *ti, unsigned int argc, char **argv)
{
int r;
-
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