Commit 9ffae0cf authored by NeilBrown's avatar NeilBrown Committed by Linus Torvalds
Browse files

[PATCH] md: convert md to use kzalloc throughout 



Replace multiple kmalloc/memset pairs with kzalloc calls.

Signed-off-by: default avatarNeil Brown <neilb@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 2d1f3b5d

drivers/md/bitmap.c

+3 −8
Original line number Diff line number Diff line
@@ -887,12 +887,10 @@ static int bitmap_init_from_disk(struct bitmap *bitmap, sector_t start) 
	if (!bitmap->filemap)

		goto out;



	bitmap->filemap_attr = kmalloc(sizeof(long) * num_pages, GFP_KERNEL);

	bitmap->filemap_attr = kzalloc(sizeof(long) * num_pages, GFP_KERNEL);

	if (!bitmap->filemap_attr)

		goto out;



	memset(bitmap->filemap_attr, 0, sizeof(long) * num_pages);



	oldindex = ~0L;



	for (i = 0; i < chunks; i++) {
@@ -1557,12 +1555,10 @@ int bitmap_create(mddev_t *mddev) 


	BUG_ON(file && mddev->bitmap_offset);



	bitmap = kmalloc(sizeof(*bitmap), GFP_KERNEL);

	bitmap = kzalloc(sizeof(*bitmap), GFP_KERNEL);

	if (!bitmap)

		return -ENOMEM;



	memset(bitmap, 0, sizeof(*bitmap));



	spin_lock_init(&bitmap->lock);

	bitmap->mddev = mddev;
@@ -1603,12 +1599,11 @@ int bitmap_create(mddev_t *mddev) 
#ifdef INJECT_FATAL_FAULT_1

	bitmap->bp = NULL;

#else

	bitmap->bp = kmalloc(pages * sizeof(*bitmap->bp), GFP_KERNEL);

	bitmap->bp = kzalloc(pages * sizeof(*bitmap->bp), GFP_KERNEL);

#endif

	err = -ENOMEM;

	if (!bitmap->bp)

		goto error;

	memset(bitmap->bp, 0, pages * sizeof(*bitmap->bp));



	bitmap->flags |= BITMAP_ACTIVE;

drivers/md/linear.c

+1 −2
Original line number Diff line number Diff line
@@ -121,11 +121,10 @@ static int linear_run (mddev_t *mddev) 
	sector_t curr_offset;

	struct list_head *tmp;



	conf = kmalloc (sizeof (*conf) + mddev->raid_disks*sizeof(dev_info_t),

	conf = kzalloc (sizeof (*conf) + mddev->raid_disks*sizeof(dev_info_t),

			GFP_KERNEL);

	if (!conf)

		goto out;

	memset(conf, 0, sizeof(*conf) + mddev->raid_disks*sizeof(dev_info_t));

	mddev->private = conf;



	cnt = 0;

drivers/md/md.c

+3 −7
Original line number Diff line number Diff line
@@ -228,12 +228,10 @@ static mddev_t * mddev_find(dev_t unit) 
	}

	spin_unlock(&all_mddevs_lock);



	new = (mddev_t *) kmalloc(sizeof(*new), GFP_KERNEL);

	new = kzalloc(sizeof(*new), GFP_KERNEL);

	if (!new)

		return NULL;



	memset(new, 0, sizeof(*new));



	new->unit = unit;

	if (MAJOR(unit) == MD_MAJOR)

		new->md_minor = MINOR(unit);
@@ -1620,12 +1618,11 @@ static mdk_rdev_t *md_import_device(dev_t newdev, int super_format, int super_mi 
	mdk_rdev_t *rdev;

	sector_t size;



	rdev = (mdk_rdev_t *) kmalloc(sizeof(*rdev), GFP_KERNEL);

	rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);

	if (!rdev) {

		printk(KERN_ERR "md: could not alloc mem for new device!\n");

		return ERR_PTR(-ENOMEM);

	}

	memset(rdev, 0, sizeof(*rdev));



	if ((err = alloc_disk_sb(rdev)))

		goto abort_free;
@@ -3505,11 +3502,10 @@ mdk_thread_t *md_register_thread(void (*run) (mddev_t *), mddev_t *mddev, 
{

	mdk_thread_t *thread;



	thread = kmalloc(sizeof(mdk_thread_t), GFP_KERNEL);

	thread = kzalloc(sizeof(mdk_thread_t), GFP_KERNEL);

	if (!thread)

		return NULL;



	memset(thread, 0, sizeof(mdk_thread_t));

	init_waitqueue_head(&thread->wqueue);



	thread->run = run;

drivers/md/multipath.c

+3 −7
Original line number Diff line number Diff line
@@ -41,9 +41,7 @@ static mdk_personality_t multipath_personality; 
static void *mp_pool_alloc(gfp_t gfp_flags, void *data)

{

	struct multipath_bh *mpb;

	mpb = kmalloc(sizeof(*mpb), gfp_flags);

	if (mpb) 

		memset(mpb, 0, sizeof(*mpb));

	mpb = kzalloc(sizeof(*mpb), gfp_flags);

	return mpb;

}
@@ -444,7 +442,7 @@ static int multipath_run (mddev_t *mddev) 
	 * should be freed in multipath_stop()]

	 */



	conf = kmalloc(sizeof(multipath_conf_t), GFP_KERNEL);

	conf = kzalloc(sizeof(multipath_conf_t), GFP_KERNEL);

	mddev->private = conf;

	if (!conf) {

		printk(KERN_ERR
@@ -452,9 +450,8 @@ static int multipath_run (mddev_t *mddev) 
			mdname(mddev));

		goto out;

	}

	memset(conf, 0, sizeof(*conf));



	conf->multipaths = kmalloc(sizeof(struct multipath_info)*mddev->raid_disks,

	conf->multipaths = kzalloc(sizeof(struct multipath_info)*mddev->raid_disks,

				   GFP_KERNEL);

	if (!conf->multipaths) {

		printk(KERN_ERR
@@ -462,7 +459,6 @@ static int multipath_run (mddev_t *mddev) 
			mdname(mddev));

		goto out_free_conf;

	}

	memset(conf->multipaths, 0, sizeof(struct multipath_info)*mddev->raid_disks);



	conf->working_disks = 0;

	ITERATE_RDEV(mddev,rdev,tmp) {

drivers/md/raid0.c

+2 −7
Original line number Diff line number Diff line
@@ -113,21 +113,16 @@ static int create_strip_zones (mddev_t *mddev) 
	}

	printk("raid0: FINAL %d zones\n", conf->nr_strip_zones);



	conf->strip_zone = kmalloc(sizeof(struct strip_zone)*

	conf->strip_zone = kzalloc(sizeof(struct strip_zone)*

				conf->nr_strip_zones, GFP_KERNEL);

	if (!conf->strip_zone)

		return 1;

	conf->devlist = kmalloc(sizeof(mdk_rdev_t*)*

	conf->devlist = kzalloc(sizeof(mdk_rdev_t*)*

				conf->nr_strip_zones*mddev->raid_disks,

				GFP_KERNEL);

	if (!conf->devlist)

		return 1;



	memset(conf->strip_zone, 0,sizeof(struct strip_zone)*

				   conf->nr_strip_zones);

	memset(conf->devlist, 0,

	       sizeof(mdk_rdev_t*) * conf->nr_strip_zones * mddev->raid_disks);



	/* The first zone must contain all devices, so here we check that

	 * there is a proper alignment of slots to devices and find them all

	 */

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