lkml.org 
[lkml]   [2015]   [Oct]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/3] hugetlbfs fallocate hole punch race with page faults
On Fri, 16 Oct 2015 15:08:27 -0700 Mike Kravetz <mike.kravetz@oracle.com> wrote:

> The hugetlbfs fallocate hole punch code can race with page faults. The
> result is that after a hole punch operation, pages may remain within the
> hole. No other side effects of this race were observed.
>
> In preparation for adding userfaultfd support to hugetlbfs, it is desirable
> to plug or significantly shrink this hole. This patch set uses the same
> mechanism employed in shmem (see commit f00cdc6df7).
>

"still buggy but not as bad as before" isn't what we strive for ;) What
would it take to fix this for real? An exhaustive description of the
bug would be a good starting point, thanks.


\
 
 \ /
  Last update: 2015-10-20 01:41    [W:0.740 / U:0.368 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site