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authorMilan Broz <mbroz@redhat.com>2007-05-09 05:33:02 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 15:30:47 -0400
commit373a392bd76c4cc2cbbdab3906aee2ae4dc6702e (patch)
tree5adf4bf86e25abe107e0623dc3257a0e46b74670 /drivers/md
parentc8b03afe3d38a635861e4bfa5c563d844e754a91 (diff)
dm kcopyd: update dm io interface
This patch ports kcopyd.c to the new, scalable dm_io() interface. Signed-off-by: Milan Broz <mbroz@redhat.com> Signed-off-by: Heinz Mauelshagen <hjm@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/kcopyd.c28
1 files changed, 18 insertions, 10 deletions
diff --git a/drivers/md/kcopyd.c b/drivers/md/kcopyd.c
index b46f6c575f7e..dbc234e3c69f 100644
--- a/drivers/md/kcopyd.c
+++ b/drivers/md/kcopyd.c
@@ -1,5 +1,6 @@
1/* 1/*
2 * Copyright (C) 2002 Sistina Software (UK) Limited. 2 * Copyright (C) 2002 Sistina Software (UK) Limited.
3 * Copyright (C) 2006 Red Hat GmbH
3 * 4 *
4 * This file is released under the GPL. 5 * This file is released under the GPL.
5 * 6 *
@@ -45,6 +46,8 @@ struct kcopyd_client {
45 unsigned int nr_pages; 46 unsigned int nr_pages;
46 unsigned int nr_free_pages; 47 unsigned int nr_free_pages;
47 48
49 struct dm_io_client *io_client;
50
48 wait_queue_head_t destroyq; 51 wait_queue_head_t destroyq;
49 atomic_t nr_jobs; 52 atomic_t nr_jobs;
50}; 53};
@@ -342,16 +345,20 @@ static void complete_io(unsigned long error, void *context)
342static int run_io_job(struct kcopyd_job *job) 345static int run_io_job(struct kcopyd_job *job)
343{ 346{
344 int r; 347 int r;
348 struct dm_io_request io_req = {
349 .bi_rw = job->rw,
350 .mem.type = DM_IO_PAGE_LIST,
351 .mem.ptr.pl = job->pages,
352 .mem.offset = job->offset,
353 .notify.fn = complete_io,
354 .notify.context = job,
355 .client = job->kc->io_client,
356 };
345 357
346 if (job->rw == READ) 358 if (job->rw == READ)
347 r = dm_io_async(1, &job->source, job->rw, 359 r = dm_io(&io_req, 1, &job->source, NULL);
348 job->pages,
349 job->offset, complete_io, job);
350
351 else 360 else
352 r = dm_io_async(job->num_dests, job->dests, job->rw, 361 r = dm_io(&io_req, job->num_dests, job->dests, NULL);
353 job->pages,
354 job->offset, complete_io, job);
355 362
356 return r; 363 return r;
357} 364}
@@ -670,8 +677,9 @@ int kcopyd_client_create(unsigned int nr_pages, struct kcopyd_client **result)
670 return r; 677 return r;
671 } 678 }
672 679
673 r = dm_io_get(nr_pages); 680 kc->io_client = dm_io_client_create(nr_pages);
674 if (r) { 681 if (IS_ERR(kc->io_client)) {
682 r = PTR_ERR(kc->io_client);
675 client_free_pages(kc); 683 client_free_pages(kc);
676 kfree(kc); 684 kfree(kc);
677 kcopyd_exit(); 685 kcopyd_exit();
@@ -691,7 +699,7 @@ void kcopyd_client_destroy(struct kcopyd_client *kc)
691 /* Wait for completion of all jobs submitted by this client. */ 699 /* Wait for completion of all jobs submitted by this client. */
692 wait_event(kc->destroyq, !atomic_read(&kc->nr_jobs)); 700 wait_event(kc->destroyq, !atomic_read(&kc->nr_jobs));
693 701
694 dm_io_put(kc->nr_pages); 702 dm_io_client_destroy(kc->io_client);
695 client_free_pages(kc); 703 client_free_pages(kc);
696 client_del(kc); 704 client_del(kc);
697 kfree(kc); 705 kfree(kc);