Re: [PATCH v8 00/17] gfs2: Fix mmap + page fault deadlocks

Linus Torvalds <[email protected]>
Newsgroups org.kernel.vger.kvm-ppc,com.redhat.cluster-devel,dev.linux.lists.ocfs2-devel,org.kernel.vger.linux-btrfs,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-kernel
Message-ID <CAHk-=wg4t2t1AaBDyMfOVhCCOiLLjCB5TFVgZcV4Pr8X2qptJw@mail.gmail.com> 
On Fri, Oct 22, 2021 at 8:06 AM Catalin Marinas <[email protected]> wrote:
>
> Probing only the first byte(s) in fault_in() would be ideal, no need to
> go through all filesystems and try to change the uaccess/probing order.

Let's try that. Or rather: probing just the first page - since there
are users like that btrfs ioctl, and the direct-io path.

                  Linus
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