Re: [PATCH v5 0/5] mm/hugetlb: Early cow on fork, and a few cleanups

[Zhang, Wei]

Yes, such user includes libfabric (https://ofiwg.github.io/libfabric/) . which uses hugetlb pages.
 
On 3/1/21, 4:30 PM, "Jason Gunthorpe" <jgg@xxxxxxxx> wrote:

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    On Mon, Mar 01, 2021 at 04:28:46PM -0800, Andrew Morton wrote:
    > On Mon, 1 Mar 2021 09:11:51 -0500 Peter Xu <peterx@xxxxxxxxxx> wrote:
    >
    > > On Wed, Feb 17, 2021 at 06:35:42PM -0500, Peter Xu wrote:
    > > > v5:
    > > > - patch 4: change "int cow" into "bool cow"
    > > > - collect r-bs for Jason
    > >
    > > Andrew,
    > >
    > > I just noticed 5.12-rc1 has released; is this series still possible to make it
    > > for 5.12, or needs to wait for 5.13?
    > >
    >
    > It has taken a while to settle down.  What is the case for
    > fast-tracking it into 5.12?

    IIRC hugetlb users and fork and DMA will get the unexpected VA
    corruption that triggered all this work.

    Jason