linux-kernel - Re: [PATCH v3] lib: add size unit t/p/e to memparse

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Date:	Fri, 13 Jun 2014 07:54:44 +0200
From:	Brendan Hide <brendan@...ftspirit.co.za>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Gui Hecheng <guihc.fnst@...fujitsu.com>
CC:	linux-kernel@...r.kernel.org, linux-btrfs@...r.kernel.org,
	1i5t5.duncan@....net
Subject: Re: [PATCH v3] lib: add size unit t/p/e to memparse

On 12/06/14 23:15, Andrew Morton wrote:
> On Wed, 2 Apr 2014 16:54:37 +0800 Gui Hecheng <guihc.fnst@...fujitsu.com> wrote:
>
>> For modern filesystems such as btrfs, t/p/e size level operations
>> are common.
>> add size unit t/p/e parsing to memparse
>>
>> Signed-off-by: Gui Hecheng <guihc.fnst@...fujitsu.com>
>> ---
>> changelog
>> 	v1->v2: replace kilobyte with kibibyte, and others
>> 	v2->v3: add missing unit "bytes" in comment
>> ---
>>   lib/cmdline.c | 25 ++++++++++++++++++++-----
>>   1 file changed, 20 insertions(+), 5 deletions(-)
>>
>> diff --git a/lib/cmdline.c b/lib/cmdline.c
>> index eb67911..511b9be 100644
>> --- a/lib/cmdline.c
>> +++ b/lib/cmdline.c
>> @@ -119,11 +119,17 @@ char *get_options(const char *str, int nints, int *ints)
>>    *	@retptr: (output) Optional pointer to next char after parse completes
>>    *
>>    *	Parses a string into a number.  The number stored at @ptr is
>> - *	potentially suffixed with %K (for kilobytes, or 1024 bytes),
>> - *	%M (for megabytes, or 1048576 bytes), or %G (for gigabytes, or
>> - *	1073741824).  If the number is suffixed with K, M, or G, then
>> - *	the return value is the number multiplied by one kilobyte, one
>> - *	megabyte, or one gigabyte, respectively.
>> + *	potentially suffixed with
>> + *	%K (for kibibytes, or 1024 bytes),
>> + *	%M (for mebibytes, or 1048576 bytes),
>> + *	%G (for gibibytes, or 1073741824 bytes),
>> + *	%T (for tebibytes, or 1099511627776 bytes),
>> + *	%P (for pebibytes, or 1125899906842624 bytes),
>> + *	%E (for exbibytes, or 1152921504606846976 bytes).
> I'm afraid I find these names quite idiotic - we all know what the
> traditional terms mean so why go and muck with it.
>
> Also, kibibytes sounds like cat food.
Hi, Andrew

While I agree it sounds like cat food, it seemed like a good opportunity 
to fix a minor issue that is otherwise unlikely to be fixed for a very 
long time. Should we feel uncomfortable with the patch, as is, because 
of language/correctness friction? Pedantry included, the patch is 
correct. ;)

Thanks

-- 
__________
Brendan Hide
http://swiftspirit.co.za/
http://www.webafrica.co.za/?AFF1E97

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