Re: [PATCH v2] ioctl_userfaultfd.2, userfaultfd.2: add minor fault mode

[Peter Xu]

On Fri, Jun 04, 2021 at 12:56:22PM -0700, Axel Rasmussen wrote:
> Userfaultfd minor fault mode is supported starting from Linux 5.13.
> 
> This commit adds a description of the new mode, as well as the new ioctl
> used to resolve such faults. The two go hand-in-hand: one can't resolve
> a minor fault without continue, and continue can't be used to resolve
> any other kind of fault.
> 
> This patch covers just the hugetlbfs implementation (in 5.13). Support
> for shmem is forthcoming, but as it has not yet made it into a kernel
> release candidate, it will be added in a future commit.
> 
> Signed-off-by: Axel Rasmussen <axelrasmussen@xxxxxxxxxx>

FWIW:

Reviewed-by: Peter Xu <peterx@xxxxxxxxxx>

-- 
Peter Xu