lkml.org 
[lkml]   [2003]   [Jan]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH]: Remove PF_MEMDIE as it is redundant
From
Date
>>>>> "robert" == Robert Love <rml@tech9.net> writes:

robert> On Wed, 2003-01-08 at 17:47, Juan Quintela wrote:
>> PF_MEMDIE don't have any use in current kernels. Please
>> remove, we only set it in one place, and there we also set
>> PF_MEMALLOC. And we only test it in other place, and we also
>> test for PF_MEMALLOC. This patch has existed in aa for some
>> quite time.

robert> I independently thought this same thing, and did a patch for 2.5 which
robert> had the same effect.

robert> I was reminded by better-VM-hackers-than-I that PF_MEMALLOC can be
robert> cleared in various paths so the PF_MEMDIE is required to ensure that the
robert> check in page_alloc.c is always true for OOM'ed tasks.

That is a nice theory, and I think that this could be true in the
past, but in 2.4.2X, PF_MEMDIE only appears in the two places that I
show, and it is completely redundant, look at the patch, we are just
|-ing both PF_MEMALLOC and PF_MEMDIE and later we are &-ing against
the or of the two. Use find & grep yourself if you don't believe me.

Later, Juan.

--
In theory, practice and theory are the same, but in practice they
are different -- Larry McVoy
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:32    [W:0.065 / U:3.320 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site