[PATCH] dm: Use structure assignments instead of memcpy

Use structure assignments instead of memcpy's.
[Suggested by akpm during kcopyd review.]
Signed-off-by: Kevin Corry <kevcorry@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/md/dm-raid1.c

@@ -850,9 +850,9 @@ static void do_mirror(struct mirror_set *ms)
 	struct bio_list reads, writes;
 
 	spin_lock(&ms->lock);
-	memcpy(&reads, &ms->reads, sizeof(reads));
+	reads = ms->reads;
+	writes = ms->writes;
 	bio_list_init(&ms->reads);
-	memcpy(&writes, &ms->writes, sizeof(writes));
 	bio_list_init(&ms->writes);
 	spin_unlock(&ms->lock);
 

drivers/md/dm-snap.c

@@ -612,7 +612,7 @@ static void pending_complete(struct pending_exception *pe, int success)
 			error_bios(bio_list_get(&pe->snapshot_bios));
 			goto out;
 		}
-		memcpy(e, &pe->e, sizeof(*e));
+		*e = pe->e;
 
 		/*
 		 * Add a proper exception, and remove the

drivers/md/dm-table.c

@@ -400,7 +400,7 @@ static int upgrade_mode(struct dm_dev *dd, int new_mode)
 	struct dm_dev dd_copy;
 	dev_t dev = dd->bdev->bd_dev;
 
-	memcpy(&dd_copy, dd, sizeof(dd_copy));
+	dd_copy = *dd;
 
 	dd->mode |= new_mode;
 	dd->bdev = NULL;
@@ -408,7 +408,7 @@ static int upgrade_mode(struct dm_dev *dd, int new_mode)
 	if (!r)
 		close_dev(&dd_copy);
 	else
-		memcpy(dd, &dd_copy, sizeof(dd_copy));
+		*dd = dd_copy;
 
 	return r;
 }

drivers/md/dm.c

@@ -394,7 +394,7 @@ static struct bio *split_bvec(struct bio *bio, sector_t sector,
 	struct bio_vec *bv = bio->bi_io_vec + idx;
 
 	clone = bio_alloc(GFP_NOIO, 1);
-	memcpy(clone->bi_io_vec, bv, sizeof(*bv));
+	*clone->bi_io_vec = *bv;
 
 	clone->bi_sector = sector;
 	clone->bi_bdev = bio->bi_bdev;

drivers/md/kcopyd.c

@@ -476,7 +476,7 @@ static void segment_complete(int read_err,
 		int i;
 		struct kcopyd_job *sub_job = mempool_alloc(_job_pool, GFP_NOIO);
 
-		memcpy(sub_job, job, sizeof(*job));
+		*sub_job = *job;
 		sub_job->source.sector += progress;
 		sub_job->source.count = count;
 
@@ -536,7 +536,7 @@ int kcopyd_copy(struct kcopyd_client *kc, struct io_region *from,
 	job->write_err = 0;
 	job->rw = READ;
 
-	memcpy(&job->source, from, sizeof(*from));
+	job->source = *from;
 
 	job->num_dests = num_dests;
 	memcpy(&job->dests, dests, sizeof(*dests) * num_dests);