Signed-off-by: Heinz Mauelshagen <hjm@xxxxxxxxxx>
---
drivers/md/dm-kcopyd.c | 54 ++++++++++++++++++++++++-----------------------
1 files changed, 28 insertions(+), 26 deletions(-)
diff --git linux-2.6.25-rc4.orig/drivers/md/dm-kcopyd.c linux-2.6.25-rc4/drivers/md/dm-kcopyd.c
index f3831f3..f181f28 100644
--- linux-2.6.25-rc4.orig/drivers/md/dm-kcopyd.c
+++ linux-2.6.25-rc4/drivers/md/dm-kcopyd.c
@@ -9,6 +9,8 @@
* completion notification.
*/
+#include "dm.h"
+
#include <asm/types.h>
#include <asm/atomic.h>
@@ -23,8 +25,7 @@
#include <linux/vmalloc.h>
#include <linux/workqueue.h>
#include <linux/mutex.h>
-
-#include "kcopyd.h"
+#include <linux/dm-kcopyd.h>
static struct workqueue_struct *_kcopyd_wq;
static struct work_struct _kcopyd_work;
@@ -38,7 +39,7 @@ static void wake(void)
* Each kcopyd client has its own little pool of preallocated
* pages for kcopyd io.
*---------------------------------------------------------------*/
-struct kcopyd_client {
+struct dm_kcopyd_client {
struct list_head list;
spinlock_t lock;
@@ -75,7 +76,7 @@ static void free_pl(struct page_list *pl)
kfree(pl);
}
-static int kcopyd_get_pages(struct kcopyd_client *kc,
+static int kcopyd_get_pages(struct dm_kcopyd_client *kc,
unsigned int nr, struct page_list **pages)
{
struct page_list *pl;
@@ -98,7 +99,7 @@ static int kcopyd_get_pages(struct kcopyd_client *kc,
return 0;
}
-static void kcopyd_put_pages(struct kcopyd_client *kc, struct page_list *pl)
+static void kcopyd_put_pages(struct dm_kcopyd_client *kc, struct page_list *pl)
{
struct page_list *cursor;
@@ -126,7 +127,7 @@ static void drop_pages(struct page_list *pl)
}
}
-static int client_alloc_pages(struct kcopyd_client *kc, unsigned int nr)
+static int client_alloc_pages(struct dm_kcopyd_client *kc, unsigned int nr)
{
unsigned int i;
struct page_list *pl = NULL, *next;
@@ -147,7 +148,7 @@ static int client_alloc_pages(struct kcopyd_client *kc, unsigned int nr)
return 0;
}
-static void client_free_pages(struct kcopyd_client *kc)
+static void client_free_pages(struct dm_kcopyd_client *kc)
{
BUG_ON(kc->nr_free_pages != kc->nr_pages);
drop_pages(kc->pages);
@@ -161,7 +162,7 @@ static void client_free_pages(struct kcopyd_client *kc)
* ever having to do io (which could cause a deadlock).
*---------------------------------------------------------------*/
struct kcopyd_job {
- struct kcopyd_client *kc;
+ struct dm_kcopyd_client *kc;
struct list_head list;
unsigned long flags;
@@ -175,13 +176,13 @@ struct kcopyd_job {
* Either READ or WRITE
*/
int rw;
- struct io_region source;
+ struct dm_io_region source;
/*
* The destinations for the transfer.
*/
unsigned int num_dests;
- struct io_region dests[KCOPYD_MAX_REGIONS];
+ struct dm_io_region dests[DM_KCOPYD_MAX_REGIONS];
sector_t offset;
unsigned int nr_pages;
@@ -191,7 +192,7 @@ struct kcopyd_job {
* Set this to ensure you are notified when the job has
* completed. 'context' is for callback to use.
*/
- kcopyd_notify_fn fn;
+ dm_kcopyd_notify_fn fn;
void *context;
/*
@@ -294,8 +295,8 @@ static int run_complete_job(struct kcopyd_job *job)
void *context = job->context;
int read_err = job->read_err;
unsigned int write_err = job->write_err;
- kcopyd_notify_fn fn = job->fn;
- struct kcopyd_client *kc = job->kc;
+ dm_kcopyd_notify_fn fn = job->fn;
+ struct dm_kcopyd_client *kc = job->kc;
kcopyd_put_pages(kc, job->pages);
mempool_free(job, _job_pool);
@@ -317,7 +318,7 @@ static void complete_io(unsigned long error, void *context)
else
job->read_err = 1;
- if (!test_bit(KCOPYD_IGNORE_ERROR, &job->flags)) {
+ if (!test_bit(DM_KCOPYD_IGNORE_ERROR, &job->flags)) {
push(&_complete_jobs, job);
wake();
return;
@@ -469,7 +470,7 @@ static void segment_complete(int read_err,
* Only dispatch more work if there hasn't been an error.
*/
if ((!job->read_err && !job->write_err) ||
- test_bit(KCOPYD_IGNORE_ERROR, &job->flags)) {
+ test_bit(DM_KCOPYD_IGNORE_ERROR, &job->flags)) {
/* get the next chunk of work */
progress = job->progress;
count = job->source.count - progress;
@@ -526,9 +527,9 @@ static void split_job(struct kcopyd_job *job)
segment_complete(0, 0u, job);
}
-int kcopyd_copy(struct kcopyd_client *kc, struct io_region *from,
- unsigned int num_dests, struct io_region *dests,
- unsigned int flags, kcopyd_notify_fn fn, void *context)
+int dm_kcopyd_copy(struct dm_kcopyd_client *kc, struct dm_io_region *from,
+ unsigned int num_dests, struct dm_io_region *dests,
+ unsigned int flags, dm_kcopyd_notify_fn fn, void *context)
{
struct kcopyd_job *job;
@@ -588,14 +589,14 @@ int kcopyd_cancel(struct kcopyd_job *job, int block)
static DEFINE_MUTEX(_client_lock);
static LIST_HEAD(_clients);
-static void client_add(struct kcopyd_client *kc)
+static void client_add(struct dm_kcopyd_client *kc)
{
mutex_lock(&_client_lock);
list_add(&kc->list, &_clients);
mutex_unlock(&_client_lock);
}
-static void client_del(struct kcopyd_client *kc)
+static void client_del(struct dm_kcopyd_client *kc)
{
mutex_lock(&_client_lock);
list_del(&kc->list);
@@ -649,10 +650,11 @@ static void kcopyd_exit(void)
mutex_unlock(&kcopyd_init_lock);
}
-int kcopyd_client_create(unsigned int nr_pages, struct kcopyd_client **result)
+int dm_kcopyd_client_create(unsigned int nr_pages,
+ struct dm_kcopyd_client **result)
{
int r = 0;
- struct kcopyd_client *kc;
+ struct dm_kcopyd_client *kc;
r = kcopyd_init();
if (r)
@@ -691,7 +693,7 @@ int kcopyd_client_create(unsigned int nr_pages, struct kcopyd_client **result)
return 0;
}
-void kcopyd_client_destroy(struct kcopyd_client *kc)
+void dm_kcopyd_client_destroy(struct dm_kcopyd_client *kc)
{
/* Wait for completion of all jobs submitted by this client. */
wait_event(kc->destroyq, !atomic_read(&kc->nr_jobs));
@@ -703,6 +705,6 @@ void kcopyd_client_destroy(struct kcopyd_client *kc)
kcopyd_exit();
}
-EXPORT_SYMBOL(kcopyd_client_create);
-EXPORT_SYMBOL(kcopyd_client_destroy);
-EXPORT_SYMBOL(kcopyd_copy);
+EXPORT_SYMBOL(dm_kcopyd_client_create);
+EXPORT_SYMBOL(dm_kcopyd_client_destroy);
+EXPORT_SYMBOL(dm_kcopyd_copy);
--
1.5.4.1
--
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