[PATCH] md: convert md to use kzalloc throughout
Replace multiple kmalloc/memset pairs with kzalloc calls.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index fc05d12..c3faa6a 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -887,12 +887,10 @@
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 @@
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 @@
#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;
diff --git a/drivers/md/linear.c b/drivers/md/linear.c
index 946efef..f46c98d 100644
--- a/drivers/md/linear.c
+++ b/drivers/md/linear.c
@@ -121,11 +121,10 @@
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;
diff --git a/drivers/md/md.c b/drivers/md/md.c
index c3ac67c..8c378b6 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -228,12 +228,10 @@
}
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 @@
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 *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;
diff --git a/drivers/md/multipath.c b/drivers/md/multipath.c
index 145cdc5..97a56aa 100644
--- a/drivers/md/multipath.c
+++ b/drivers/md/multipath.c
@@ -41,9 +41,7 @@
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 @@
* 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 @@
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 @@
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) {
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index a2c2e18..b4eaa67 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -113,21 +113,16 @@
}
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
*/
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index bbe0b81..c42ef1c 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -61,10 +61,8 @@
int size = offsetof(r1bio_t, bios[pi->raid_disks]);
/* allocate a r1bio with room for raid_disks entries in the bios array */
- r1_bio = kmalloc(size, gfp_flags);
- if (r1_bio)
- memset(r1_bio, 0, size);
- else
+ r1_bio = kzalloc(size, gfp_flags);
+ if (!r1_bio)
unplug_slaves(pi->mddev);
return r1_bio;
@@ -711,13 +709,11 @@
{
int i;
struct bio_vec *bvec;
- struct page **pages = kmalloc(bio->bi_vcnt * sizeof(struct page *),
+ struct page **pages = kzalloc(bio->bi_vcnt * sizeof(struct page *),
GFP_NOIO);
if (unlikely(!pages))
goto do_sync_io;
- memset(pages, 0, bio->bi_vcnt * sizeof(struct page *));
-
bio_for_each_segment(bvec, bio, i) {
pages[i] = alloc_page(GFP_NOIO);
if (unlikely(!pages[i]))
@@ -1770,19 +1766,16 @@
* bookkeeping area. [whatever we allocate in run(),
* should be freed in stop()]
*/
- conf = kmalloc(sizeof(conf_t), GFP_KERNEL);
+ conf = kzalloc(sizeof(conf_t), GFP_KERNEL);
mddev->private = conf;
if (!conf)
goto out_no_mem;
- memset(conf, 0, sizeof(*conf));
- conf->mirrors = kmalloc(sizeof(struct mirror_info)*mddev->raid_disks,
+ conf->mirrors = kzalloc(sizeof(struct mirror_info)*mddev->raid_disks,
GFP_KERNEL);
if (!conf->mirrors)
goto out_no_mem;
- memset(conf->mirrors, 0, sizeof(struct mirror_info)*mddev->raid_disks);
-
conf->tmppage = alloc_page(GFP_KERNEL);
if (!conf->tmppage)
goto out_no_mem;
@@ -1992,13 +1985,12 @@
kfree(newpoolinfo);
return -ENOMEM;
}
- newmirrors = kmalloc(sizeof(struct mirror_info) * raid_disks, GFP_KERNEL);
+ newmirrors = kzalloc(sizeof(struct mirror_info) * raid_disks, GFP_KERNEL);
if (!newmirrors) {
kfree(newpoolinfo);
mempool_destroy(newpool);
return -ENOMEM;
}
- memset(newmirrors, 0, sizeof(struct mirror_info)*raid_disks);
raise_barrier(conf);
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index ce729d6..254b50e 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -59,10 +59,8 @@
int size = offsetof(struct r10bio_s, devs[conf->copies]);
/* allocate a r10bio with room for raid_disks entries in the bios array */
- r10_bio = kmalloc(size, gfp_flags);
- if (r10_bio)
- memset(r10_bio, 0, size);
- else
+ r10_bio = kzalloc(size, gfp_flags);
+ if (!r10_bio)
unplug_slaves(conf->mddev);
return r10_bio;
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index ec5186f..9fc5048 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1827,12 +1827,12 @@
return -EIO;
}
- mddev->private = kmalloc (sizeof (raid5_conf_t)
- + mddev->raid_disks * sizeof(struct disk_info),
- GFP_KERNEL);
+ mddev->private = kzalloc(sizeof (raid5_conf_t)
+ + mddev->raid_disks * sizeof(struct disk_info),
+ GFP_KERNEL);
if ((conf = mddev->private) == NULL)
goto abort;
- memset (conf, 0, sizeof (*conf) + mddev->raid_disks * sizeof(struct disk_info) );
+
conf->mddev = mddev;
if ((conf->stripe_hashtbl = (struct stripe_head **) __get_free_pages(GFP_ATOMIC, HASH_PAGES_ORDER)) == NULL)