From: Muchun Song <songmuchun@bytedance.com>
To: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mina Almasry <almasrymina@google.com>,
Linux-MM <linux-mm@kvack.org>,
open list <linux-kernel@vger.kernel.org>,
Axel Rasmussen <axelrasmussen@google.com>,
Peter Xu <peterx@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [External] [PATCH 0/2] Track reserve map changes to restore on error
Date: Wed, 26 May 2021 11:19:20 +0800 [thread overview]
Message-ID: <CAMZfGtVUvtCCEHN_V8iE4m9FAmiz9e5Z1CNNvnetXsrEwAVzgQ@mail.gmail.com> (raw)
In-Reply-To: <20210525233134.246444-1-mike.kravetz@oracle.com>
On Wed, May 26, 2021 at 7:31 AM Mike Kravetz <mike.kravetz@oracle.com> wrote:
>
> Here is a modification to the reservation tracking for fixup on errors.
> It is a more general change, but should work for the hugetlb_mcopy_pte_atomic
> case as well.
>
> Perhaps use this as a prerequisite for your fix(es)? Pretty sure this
> will eliminate the need for the call to hugetlb_unreserve_pages.
Hi Mike,
It seems like someone is fixing a bug, right? Maybe a link should be
placed in the cover letter so that someone can know what issue
we are facing.
Thanks.
>
> Mike Kravetz (2):
> hugetlb: rename HPageRestoreReserve flag to HPageRestoreRsvCnt
> hugetlb: add new hugetlb specific flag HPG_restore_rsv_map
>
> fs/hugetlbfs/inode.c | 3 +-
> include/linux/hugetlb.h | 17 +++++--
> mm/hugetlb.c | 108 ++++++++++++++++++++++++++++------------
> mm/userfaultfd.c | 14 +++---
> 4 files changed, 99 insertions(+), 43 deletions(-)
>
> --
> 2.31.1
>
next prev parent reply other threads:[~2021-05-26 3:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-21 7:44 [PATCH v3] mm, hugetlb: fix resv_huge_pages underflow on UFFDIO_COPY Mina Almasry
2021-05-22 21:19 ` Andrew Morton
2021-05-22 21:32 ` Mina Almasry
2021-05-24 18:07 ` Mike Kravetz
2021-05-25 0:11 ` Mina Almasry
2021-05-25 0:45 ` Mike Kravetz
2021-05-25 23:31 ` [PATCH 0/2] Track reserve map changes to restore on error Mike Kravetz
2021-05-25 23:31 ` [PATCH 1/2] hugetlb: rename HPageRestoreReserve flag to HPageRestoreRsvCnt Mike Kravetz
2021-05-27 2:49 ` Mina Almasry
2021-05-25 23:31 ` [PATCH 2/2] hugetlb: add new hugetlb specific flag HPG_restore_rsv_map Mike Kravetz
2021-05-27 2:58 ` Mina Almasry
2021-05-26 3:19 ` Muchun Song [this message]
2021-05-26 17:17 ` [External] [PATCH 0/2] Track reserve map changes to restore on error Mike Kravetz
2021-05-26 23:19 ` Mina Almasry
2021-05-27 2:48 ` Mina Almasry
2021-05-27 16:08 ` Mike Kravetz
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