Messages in this thread | | | Date | Mon, 19 Oct 2015 16:18:40 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 0/3] hugetlbfs fallocate hole punch race with page faults |
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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.
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