Re: [BUG] hugetlb MAP_PRIVATE mapping vs /dev/zero

[William Lee Irwin III]

On Thu, Jul 01, 2004 at 08:29:18PM +0400, Oleg Nesterov wrote:
>> We can fix hugetlbfs_file_mmap() or read_zero_pagealigned()
>> or both.

On Fri, Jul 02, 2004 at 11:20:12AM +1000, David Gibson wrote:
> Err... surely we need to fix both, yes?

No. /dev/zero is innocent. hugetlb is demanding VM_SHARED semantics
without actually setting VM_SHARED. /dev/zero tripping over its
nonstandard pagetable structure is not something to be dealt with
in /dev/zero itself.


-- wli
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