fs/ntfs3: Use kcalloc/kmalloc_array over kzalloc/kmalloc

Use kcalloc/kmalloc_array over kzalloc/kmalloc when we allocate array.
Checkpatch found these after we did not use our own defined allocation
wrappers.
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NKari Argillander <kari.argillander@gmail.com>
Signed-off-by: NKonstantin Komarov <almaz.alexandrovich@paragon-software.com>

fs/ntfs3/bitmap.c

@@ -683,7 +683,7 @@ int wnd_init(struct wnd_bitmap *wnd, struct super_block *sb, size_t nbits)
 	if (!wnd->bits_last)
 		wnd->bits_last = wbits;
 
-	wnd->free_bits = kzalloc(wnd->nwnd * sizeof(u16), GFP_NOFS);
+	wnd->free_bits = kcalloc(wnd->nwnd, sizeof(u16), GFP_NOFS);
 	if (!wnd->free_bits)
 		return -ENOMEM;
 

fs/ntfs3/file.c

@@ -900,7 +900,7 @@ static ssize_t ntfs_compress_write(struct kiocb *iocb, struct iov_iter *from)
 		return -EOPNOTSUPP;
 	}
 
-	pages = kmalloc(pages_per_frame * sizeof(struct page *), GFP_NOFS);
+	pages = kmalloc_array(pages_per_frame, sizeof(struct page *), GFP_NOFS);
 	if (!pages)
 		return -ENOMEM;
 

fs/ntfs3/frecord.c

@@ -2054,7 +2054,7 @@ int ni_readpage_cmpr(struct ntfs_inode *ni, struct page *page)
 	idx = (vbo - frame_vbo) >> PAGE_SHIFT;
 
 	pages_per_frame = frame_size >> PAGE_SHIFT;
-	pages = kzalloc(pages_per_frame * sizeof(struct page *), GFP_NOFS);
+	pages = kcalloc(pages_per_frame, sizeof(struct page *), GFP_NOFS);
 	if (!pages) {
 		err = -ENOMEM;
 		goto out;
@@ -2137,7 +2137,7 @@ int ni_decompress_file(struct ntfs_inode *ni)
 	frame_bits = ni_ext_compress_bits(ni);
 	frame_size = 1u << frame_bits;
 	pages_per_frame = frame_size >> PAGE_SHIFT;
-	pages = kzalloc(pages_per_frame * sizeof(struct page *), GFP_NOFS);
+	pages = kcalloc(pages_per_frame, sizeof(struct page *), GFP_NOFS);
 	if (!pages) {
 		err = -ENOMEM;
 		goto out;
@@ -2709,8 +2709,7 @@ int ni_write_frame(struct ntfs_inode *ni, struct page **pages,
 		goto out;
 	}
 
-	pages_disk = kzalloc(pages_per_frame * sizeof(struct page *),
-			     GFP_NOFS);
+	pages_disk = kcalloc(pages_per_frame, sizeof(struct page *), GFP_NOFS);
 	if (!pages_disk) {
 		err = -ENOMEM;
 		goto out;