Re: [patch 2/3] MAP_NOZERO - implement sys_brk2()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 6/26/07, Rik van Riel <[email protected]> wrote:
After going through the first malloc()/free() cycle, surely
the memory will no longer be zeroed on the second malloc() ?

If returned to the system, sure.


What makes the first brk malloc so special?

If the memory is zeroed it needs not be initialized by malloc.  No
calloc zeroing, no pointer clearing.

Anyway, it's irrelevant what the benefits are, the fact is current
code depends on brk to zero the memory and you'd break the ABI if
you'd change it.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux