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From: Dan Williams <dan.j.williams@intel.com>
To: Jane Chu <jane.chu@oracle.com>
Cc: Shiyang Ruan <ruansy.fnst@fujitsu.com>,
	 Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-xfs <linux-xfs@vger.kernel.org>,
	 Linux NVDIMM <nvdimm@lists.linux.dev>,
	Linux MM <linux-mm@kvack.org>,
	 linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	 device-mapper development <dm-devel@redhat.com>,
	"Darrick J. Wong" <djwong@kernel.org>,
	david <david@fromorbit.com>,  Christoph Hellwig <hch@lst.de>,
	Alasdair Kergon <agk@redhat.com>,
	Mike Snitzer <snitzer@redhat.com>
Subject: Re: [PATCH RESEND v6 6/9] xfs: Implement ->notify_failure() for XFS
Date: Fri, 20 Aug 2021 15:56:54 -0700	[thread overview]
Message-ID: <CAPcyv4hitKKPByHkX-syRmc1rmF8B4sGRsGdUDsBAE5-yoBvXw@mail.gmail.com> (raw)
In-Reply-To: <ec5dd047-a420-8e17-d803-729e052b2377@oracle.com>

On Thu, Aug 5, 2021 at 5:50 PM Jane Chu <jane.chu@oracle.com> wrote:
>
>
> On 7/30/2021 3:01 AM, Shiyang Ruan wrote:
> > +     mapping = VFS_I(ip)->i_mapping;
> > +     if (IS_ENABLED(CONFIG_MEMORY_FAILURE)) {
> > +             for (i = 0; i < rec->rm_blockcount; i++) {
> > +                     error = mf_dax_kill_procs(mapping, rec->rm_offset + i,
> > +                                               *flags);
> > +                     if (error)
> > +                             break;
> > +             }
> > +     }
>
> If a poison is injected to a PMD dax page, after consuming the poison,
> how many SIGBUS signals are expected to be sent to the process?

I think it should only get one. I.e. just like the the generic code
does one shootdown per mapped page regardless of whether that page is
4K, 2M, or 1G. Once the application is notified it should be able to
query the filesystem to determine the full extent of the damage to
files.


  reply	other threads:[~2021-08-20 22:57 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-30 10:01 [PATCH RESEND v6 0/9] fsdax: introduce fs query to support reflink Shiyang Ruan
2021-07-30 10:01 ` [PATCH RESEND v6 1/9] pagemap: Introduce ->memory_failure() Shiyang Ruan
2021-08-06  1:17   ` Jane Chu
2021-08-16 17:20     ` Jane Chu
2021-08-17  1:44       ` ruansy.fnst
2021-08-18  5:43       ` Jane Chu
2021-08-18  6:08         ` Jane Chu
2021-08-18  7:52           ` ruansy.fnst
2021-08-18 17:10             ` Dan Williams
2021-08-23 13:21               ` hch
2021-08-18 15:52           ` Darrick J. Wong
2021-08-19  7:18           ` Jane Chu
2021-08-19  8:11             ` Jane Chu
2021-08-19  9:10               ` ruansy.fnst
2021-08-19 20:50                 ` Jane Chu
2021-08-20 16:07   ` Dan Williams
2021-07-30 10:01 ` [PATCH RESEND v6 2/9] dax: Introduce holder for dax_device Shiyang Ruan
2021-08-06  1:02   ` Jane Chu
2021-08-17  1:45     ` ruansy.fnst
2021-08-20 16:06   ` Dan Williams
2021-08-20 20:19   ` Dan Williams
2021-07-30 10:01 ` [PATCH RESEND v6 3/9] mm: factor helpers for memory_failure_dev_pagemap Shiyang Ruan
2021-08-06  1:00   ` Jane Chu
2021-08-20 16:54     ` Dan Williams
2021-07-30 10:01 ` [PATCH RESEND v6 4/9] pmem,mm: Implement ->memory_failure in pmem driver Shiyang Ruan
2021-08-20 20:51   ` Dan Williams
2021-07-30 10:01 ` [PATCH RESEND v6 5/9] mm: Introduce mf_dax_kill_procs() for fsdax case Shiyang Ruan
2021-08-06  0:59   ` Jane Chu
2021-08-20 22:40   ` Dan Williams
2021-07-30 10:01 ` [PATCH RESEND v6 6/9] xfs: Implement ->notify_failure() for XFS Shiyang Ruan
2021-08-06  0:50   ` Jane Chu
2021-08-20 22:56     ` Dan Williams [this message]
2021-08-20 22:59   ` Dan Williams
2021-07-30 10:01 ` [PATCH RESEND v6 7/9] dm: Introduce ->rmap() to find bdev offset Shiyang Ruan
2021-08-20 23:46   ` Dan Williams
2021-07-30 10:01 ` [PATCH RESEND v6 8/9] md: Implement dax_holder_operations Shiyang Ruan
2021-08-06  0:48   ` Jane Chu
2021-08-17  1:59     ` ruansy.fnst
2021-07-30 10:01 ` [PATCH RESEND v6 9/9] fsdax: add exception for reflinked files Shiyang Ruan
2021-08-06  0:46   ` Jane Chu

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