memory pages nulling when releasing
keramida at FreeBSD.org
Tue Jun 20 20:24:45 UTC 2006
On 2006-06-20 10:43, Jason Evans <jasone at FreeBSD.org> wrote:
>Giorgos Keramidas wrote:
>>On 2006-06-20 17:05, Dan Lukes <dan at obluda.cz> wrote:
>>>BTW, Z nor J doesn't imply 'R' despite of text of manual page.
>> Are you sure? Then we should fix the manpage.
>> Cc'ing Jason Evans, who may be interested too.
> The man page looks accurate to me. What aspect of the descriptions of
> 'J' and 'Z' do you think is incorrect?
On 2006-06-20 21:19, Dan Lukes <dan at obluda.cz> wrote:
> From manual page:
> J ...
> This options also sets the ``R'' option.
> Z This option implicitly sets the ``J'' and ``R'' options,
> From libc/stdlib/malloc.c (the lines containing malloc_realloc +
> some lines around)
> static int malloc_realloc;
> case 'r': malloc_realloc = 0; break;
> case 'R': malloc_realloc = 1; break;
> case 'j': malloc_junk = 0; break;
> if (!malloc_realloc && /* Unless we have
> to, */
> size <= osize && /* .. or are too small, ...
> if (!malloc_realloc && /* Unless we have to, */
> size <= osize && /* ..or are too small, */
> The malloc_realloc seems to be set on one place only - when R/r
> present. Then it is used only. I see no dependency to J nor Z
> I send no PR because I have submitted several more important PR's
> which are untouched for months. I don't want to overload committers
> nor PR database.
No, that's ok. It's better to send what you have found so it won't be
missed forever :-)
On 2006-06-20 12:44, Jason Evans <jasone at freebsd.org> wrote:
> Ah, this is for RELENG_6. I had assumed you were talking about
> -current. I agree with you that the man page is inaccurate for
> RELENG_6. I don't currently use RELENG_6 for development though, so
> I'd recommend submitting a PR with a patch assigned to the docs folks
> if you want it fixed. In my experience they are very responsive where
> man page accuracy is concerned.
Dan, if you submit a PR, then feel free to include my own address at the
Cc: line of send-pr's report. Then I'll grab the PR and work through
the necessary changes for RELENG_6 with you.
Thanks for bringing this manpage bug to our attention :)
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