On 11/11/2015 12:02 PM, Alim Akhtar wrote:
> Hi Yalin,
>
> On Wed, Nov 11, 2015 at 9:53 AM, yalin wang <yalin.wang2...@gmail.com> wrote:
>> Use kmalloc instead of kzalloc, zero the memory is not needed.
>>
> why you want to do this? what problem you faces, and how this resolves the
> same?
The patch fixes an inefficiency: explicitly zeroing memory that is then
immediately overwritten 6 lines below is wasteful.
Regards,
Peter Hurley
>> Signed-off-by: yalin wang <yalin.wang2...@gmail.com>
>> ---
>> drivers/mmc/card/block.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
>> index 23b6c8e..975cd3e 100644
>> --- a/drivers/mmc/card/block.c
>> +++ b/drivers/mmc/card/block.c
>> @@ -365,7 +365,7 @@ static struct mmc_blk_ioc_data
>> *mmc_blk_ioctl_copy_from_user(
>> if (!idata->buf_bytes)
>> return idata;
>>
>> - idata->buf = kzalloc(idata->buf_bytes, GFP_KERNEL);
>> + idata->buf = kmalloc(idata->buf_bytes, GFP_KERNEL);
>> if (!idata->buf) {
>> err = -ENOMEM;
>> goto idata_err;
>> --
>> 1.9.1
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