All of lore.kernel.org
 help / color / mirror / Atom feed
From: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>
To: <linux-kernel@vger.kernel.org>, <linux-xfs@vger.kernel.org>,
	<linux-nvdimm@lists.01.org>, <linux-mm@kvack.org>
Cc: linux-fsdevel@vger.kernel.org, linux-raid@vger.kernel.org,
	darrick.wong@oracle.com, david@fromorbit.com, hch@lst.de,
	song@kernel.org, rgoldwyn@suse.de, qi.fuli@fujitsu.com,
	y-goto@fujitsu.com
Subject: [RFC PATCH v3 1/9] pagemap: Introduce ->memory_failure()
Date: Tue, 15 Dec 2020 20:14:06 +0800	[thread overview]
Message-ID: <20201215121414.253660-2-ruansy.fnst@cn.fujitsu.com> (raw)
In-Reply-To: <20201215121414.253660-1-ruansy.fnst@cn.fujitsu.com>

When memory-failure occurs, we call this function which is implemented
by each kind of devices.  For the fsdax case, pmem device driver
implements it.  Pmem device driver will find out the block device where
the error page locates in, and try to get the filesystem on this block
device.  And finally call filesystem handler to deal with the error.
The filesystem will try to recover the corrupted data if possiable.

Signed-off-by: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>
---
 include/linux/memremap.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/linux/memremap.h b/include/linux/memremap.h
index 79c49e7f5c30..0bcf2b1e20bd 100644
--- a/include/linux/memremap.h
+++ b/include/linux/memremap.h
@@ -87,6 +87,14 @@ struct dev_pagemap_ops {
 	 * the page back to a CPU accessible page.
 	 */
 	vm_fault_t (*migrate_to_ram)(struct vm_fault *vmf);
+
+	/*
+	 * Handle the memory failure happens on one page.  Notify the processes
+	 * who are using this page, and try to recover the data on this page
+	 * if necessary.
+	 */
+	int (*memory_failure)(struct dev_pagemap *pgmap, unsigned long pfn,
+			      int flags);
 };
 
 #define PGMAP_ALTMAP_VALID	(1 << 0)
-- 
2.29.2


_______________________________________________
Linux-nvdimm mailing list -- linux-nvdimm@lists.01.org
To unsubscribe send an email to linux-nvdimm-leave@lists.01.org

WARNING: multiple messages have this Message-ID (diff)
From: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>
To: <linux-kernel@vger.kernel.org>, <linux-xfs@vger.kernel.org>,
	<linux-nvdimm@lists.01.org>, <linux-mm@kvack.org>
Cc: <linux-fsdevel@vger.kernel.org>, <linux-raid@vger.kernel.org>,
	<darrick.wong@oracle.com>, <dan.j.williams@intel.com>,
	<david@fromorbit.com>, <hch@lst.de>, <song@kernel.org>,
	<rgoldwyn@suse.de>, <qi.fuli@fujitsu.com>, <y-goto@fujitsu.com>
Subject: [RFC PATCH v3 1/9] pagemap: Introduce ->memory_failure()
Date: Tue, 15 Dec 2020 20:14:06 +0800	[thread overview]
Message-ID: <20201215121414.253660-2-ruansy.fnst@cn.fujitsu.com> (raw)
In-Reply-To: <20201215121414.253660-1-ruansy.fnst@cn.fujitsu.com>

When memory-failure occurs, we call this function which is implemented
by each kind of devices.  For the fsdax case, pmem device driver
implements it.  Pmem device driver will find out the block device where
the error page locates in, and try to get the filesystem on this block
device.  And finally call filesystem handler to deal with the error.
The filesystem will try to recover the corrupted data if possiable.

Signed-off-by: Shiyang Ruan <ruansy.fnst@cn.fujitsu.com>
---
 include/linux/memremap.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/linux/memremap.h b/include/linux/memremap.h
index 79c49e7f5c30..0bcf2b1e20bd 100644
--- a/include/linux/memremap.h
+++ b/include/linux/memremap.h
@@ -87,6 +87,14 @@ struct dev_pagemap_ops {
 	 * the page back to a CPU accessible page.
 	 */
 	vm_fault_t (*migrate_to_ram)(struct vm_fault *vmf);
+
+	/*
+	 * Handle the memory failure happens on one page.  Notify the processes
+	 * who are using this page, and try to recover the data on this page
+	 * if necessary.
+	 */
+	int (*memory_failure)(struct dev_pagemap *pgmap, unsigned long pfn,
+			      int flags);
 };
 
 #define PGMAP_ALTMAP_VALID	(1 << 0)
-- 
2.29.2




  reply	other threads:[~2020-12-15 12:14 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-15 12:14 [RFC PATCH v3 0/9] fsdax: introduce fs query to support reflink Shiyang Ruan
2020-12-15 12:14 ` Shiyang Ruan
2020-12-15 12:14 ` Shiyang Ruan [this message]
2020-12-15 12:14   ` [RFC PATCH v3 1/9] pagemap: Introduce ->memory_failure() Shiyang Ruan
2020-12-15 12:14 ` [RFC PATCH v3 2/9] blk: Introduce ->corrupted_range() for block device Shiyang Ruan
2020-12-15 12:14   ` Shiyang Ruan
2020-12-15 12:14 ` [RFC PATCH v3 3/9] fs: Introduce ->corrupted_range() for superblock Shiyang Ruan
2020-12-15 12:14   ` Shiyang Ruan
2020-12-15 12:14 ` [RFC PATCH v3 4/9] mm, fsdax: Refactor memory-failure handler for dax mapping Shiyang Ruan
2020-12-15 12:14   ` Shiyang Ruan
2020-12-16 21:26   ` Dave Chinner
2020-12-16 21:26     ` Dave Chinner
2020-12-18  1:48     ` Ruan Shiyang
2020-12-18  1:48       ` Ruan Shiyang
2020-12-15 12:14 ` [RFC PATCH v3 5/9] mm, pmem: Implement ->memory_failure() in pmem driver Shiyang Ruan
2020-12-15 12:14   ` Shiyang Ruan
2020-12-15 12:14 ` [RFC PATCH v3 6/9] pmem: Implement ->corrupted_range() for " Shiyang Ruan
2020-12-15 12:14   ` Shiyang Ruan
2020-12-15 12:14 ` [RFC PATCH v3 7/9] dm: Introduce ->rmap() to find bdev offset Shiyang Ruan
2020-12-15 12:14   ` Shiyang Ruan
2020-12-15 12:14 ` [RFC PATCH v3 8/9] md: Implement ->corrupted_range() Shiyang Ruan
2020-12-15 12:14   ` Shiyang Ruan
2020-12-15 20:51   ` Darrick J. Wong
2020-12-15 20:51     ` Darrick J. Wong
2020-12-15 23:28     ` Dave Chinner
2020-12-15 23:28       ` Dave Chinner
2020-12-18  2:11     ` Ruan Shiyang
2020-12-18  2:11       ` Ruan Shiyang
2021-01-04 23:34       ` Darrick J. Wong
2021-01-04 23:34         ` Darrick J. Wong
2021-01-08  9:52         ` Ruan Shiyang
2021-01-08  9:52           ` Ruan Shiyang
2021-01-08 19:05           ` Darrick J. Wong
2021-01-08 19:05             ` Darrick J. Wong
2020-12-16  5:43   ` Jane Chu
2020-12-16  5:43     ` Jane Chu
2020-12-18  1:50     ` Ruan Shiyang
2020-12-18  1:50       ` Ruan Shiyang
2020-12-15 12:14 ` [RFC PATCH v3 9/9] xfs: Implement ->corrupted_range() for XFS Shiyang Ruan
2020-12-15 12:14   ` Shiyang Ruan
2020-12-15 20:40   ` Darrick J. Wong
2020-12-15 20:40     ` Darrick J. Wong
2020-12-18  2:31     ` Ruan Shiyang
2020-12-18  2:31       ` Ruan Shiyang
2020-12-16 20:55 ` [RFC PATCH v3 0/9] fsdax: introduce fs query to support reflink Jane Chu
2020-12-16 20:55   ` Jane Chu
2020-12-18  2:44   ` Ruan Shiyang
2020-12-18  2:44     ` Ruan Shiyang
2020-12-18  3:49     ` Darrick J. Wong
2020-12-18  3:49       ` Darrick J. Wong
2020-12-18  9:13       ` Ruan Shiyang
2020-12-18  9:13         ` Ruan Shiyang
2021-01-08 18:14         ` Jane Chu
2021-01-08 18:14           ` Jane Chu

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201215121414.253660-2-ruansy.fnst@cn.fujitsu.com \
    --to=ruansy.fnst@cn.fujitsu.com \
    --cc=darrick.wong@oracle.com \
    --cc=david@fromorbit.com \
    --cc=hch@lst.de \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=linux-nvdimm@lists.01.org \
    --cc=linux-raid@vger.kernel.org \
    --cc=linux-xfs@vger.kernel.org \
    --cc=qi.fuli@fujitsu.com \
    --cc=rgoldwyn@suse.de \
    --cc=song@kernel.org \
    --cc=y-goto@fujitsu.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.