On Wed, Nov 11, 2015 at 11:17 PM, Peter Hurley <pe...@hurleysoftware.com> wrote:
> 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.
It might fix previous kzalloc as well, though better not to do since
it's error prone.
>
> 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
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majord...@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
--
With Best Regards,
Andy Shevchenko
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
