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From: Peter Xu <peterx@redhat.com>
To: Axel Rasmussen <axelrasmussen@google.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>,
	Andrea Arcangeli <aarcange@redhat.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Hugh Dickins <hughd@google.com>,
	Jerome Glisse <jglisse@redhat.com>, Joe Perches <joe@perches.com>,
	Lokesh Gidra <lokeshgidra@google.com>,
	Mike Kravetz <mike.kravetz@oracle.com>,
	Mike Rapoport <rppt@linux.vnet.ibm.com>, Shaohua Li <shli@fb.com>,
	Shuah Khan <shuah@kernel.org>,
	Stephen Rothwell <sfr@canb.auug.org.au>,
	Wang Qing <wangqing@vivo.com>,
	linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
	linux-mm@kvack.org, Brian Geffon <bgeffon@google.com>,
	"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
	Mina Almasry <almasrymina@google.com>,
	Oliver Upton <oupton@google.com>
Subject: Re: [PATCH v2 3/9] userfaultfd/shmem: support minor fault registration for shmem
Date: Tue, 13 Apr 2021 16:43:04 -0400
Message-ID: <20210413204304.GG4440@xz-x1> (raw)
In-Reply-To: <20210413051721.2896915-4-axelrasmussen@google.com>

On Mon, Apr 12, 2021 at 10:17:15PM -0700, Axel Rasmussen wrote:
> This patch allows shmem-backed VMAs to be registered for minor faults.
> Minor faults are appropriately relayed to userspace in the fault path,
> for VMAs with the relevant flag.
> 
> This commit doesn't hook up the UFFDIO_CONTINUE ioctl for shmem-backed
> minor faults, though, so userspace doesn't yet have a way to resolve
> such faults.
> 
> Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>

Everything looks right to me, but it'll be great if Andrea or Hugh will have a
look too.

Acked-by: Peter Xu <peterx@redhat.com>

-- 
Peter Xu


  reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-13  5:17 [PATCH v2 0/9] userfaultfd: add minor fault handling " Axel Rasmussen
2021-04-13  5:17 ` [PATCH v2 1/9] userfaultfd/hugetlbfs: avoid including userfaultfd_k.h in hugetlb.h Axel Rasmussen
2021-04-14  6:43   ` Hugh Dickins
2021-04-13  5:17 ` [PATCH v2 2/9] userfaultfd/shmem: combine shmem_{mcopy_atomic,mfill_zeropage}_pte Axel Rasmussen
2021-04-14  6:51   ` Hugh Dickins
2021-04-13  5:17 ` [PATCH v2 3/9] userfaultfd/shmem: support minor fault registration for shmem Axel Rasmussen
2021-04-13 20:43   ` Peter Xu [this message]
2021-04-14  7:36   ` Hugh Dickins
2021-04-14 18:51     ` Peter Xu
2021-04-13  5:17 ` [PATCH v2 4/9] userfaultfd/shmem: support UFFDIO_CONTINUE " Axel Rasmussen
2021-04-16 23:47   ` Hugh Dickins
2021-04-20 18:05     ` Axel Rasmussen
2021-04-13  5:17 ` [PATCH v2 5/9] userfaultfd/selftests: use memfd_create for shmem test type Axel Rasmussen
2021-04-13 20:16   ` Peter Xu
2021-04-13  5:17 ` [PATCH v2 6/9] userfaultfd/selftests: create alias mappings in the shmem test Axel Rasmussen
2021-04-13 20:17   ` Peter Xu
2021-04-13  5:17 ` [PATCH v2 7/9] userfaultfd/selftests: reinitialize test context in each test Axel Rasmussen
2021-04-13 20:15   ` Peter Xu
2021-04-15 18:03     ` Axel Rasmussen
2021-04-13  5:17 ` [PATCH v2 8/9] userfaultfd/selftests: exercise minor fault handling shmem support Axel Rasmussen
2021-04-13  5:17 ` [PATCH v2 9/9] userfaultfd/shmem: modify shmem_mcopy_atomic_pte to use install_ptes Axel Rasmussen
2021-04-17  0:34   ` Hugh Dickins
2021-04-20 18:43     ` Axel Rasmussen

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