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Date: Wed, 20 Apr 2022 10:25:36 -0400 From: Peter Xu <peterx@...hat.com> To: Johannes Weiner <hannes@...xchg.org> Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org, Mike Kravetz <mike.kravetz@...cle.com>, Nadav Amit <nadav.amit@...il.com>, Matthew Wilcox <willy@...radead.org>, Mike Rapoport <rppt@...ux.vnet.ibm.com>, David Hildenbrand <david@...hat.com>, Hugh Dickins <hughd@...gle.com>, Jerome Glisse <jglisse@...hat.com>, "Kirill A . Shutemov" <kirill@...temov.name>, Andrea Arcangeli <aarcange@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>, Axel Rasmussen <axelrasmussen@...gle.com>, Alistair Popple <apopple@...dia.com> Subject: Re: [PATCH v8 22/23] mm: Enable PTE markers by default On Wed, Apr 20, 2022 at 09:46:07AM -0400, Johannes Weiner wrote: > My point was simply that for the user it might be easiest and most > intuitive if userfaultfd and its related suboptions are 1) grouped > together and 2) in the MM submenu. Very reasonable request. > Yeah it looks like there is a healthy mix ;) To add to the list: > > - mm/Kconfig has CONFIG_SWAP for the swapon/swapoff syscalls. > - fs/Kconfig has CONFIG_FILE_LOCKING, which adds the flock() syscall. > - Interestingly, fs/Kconfig has CONFIG_MEMFD_CREATE for memfd_create() > which is implemented in mm/memfd.c. > > It seems reasonable to me to move the userfaultfd stuff to mm as well, > especially when it's becoming more than just a single binary question > on whether you want a syscall or not, and has MM-specific suboptions. Thanks for the extra information! Obviously as you said it's growing a little bit. I'll give it a shot later today. -- Peter Xu
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