Re: [PATCH v2] fs/ntfs3: Use kcalloc/kmalloc_array over kzalloc/kmalloc

[Joe Perches]

On 2021-08-17 12:38, Kari Argillander wrote:
> Use kcalloc/kmalloc_array over kzalloc/kmalloc when we allocate array.
> Checkpatch found these after we did not use our own defined allocation
> wrappers.
[]
> diff --git a/fs/ntfs3/file.c b/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 = kcalloc(pages_per_frame, sizeof(struct page *), GFP_NOFS);

This is not an exact transformation.
This allocates zeroed memory.
Use kmalloc_array here instead.