linux-kernel - [PATCH v4 03/10] fs: Introduce ->corrupted

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Message-ID: <20210604011844.1756145-4-ruansy.fnst@fujitsu.com>
Date:   Fri, 4 Jun 2021 09:18:37 +0800
From:   Shiyang Ruan <ruansy.fnst@...itsu.com>
To:     <linux-kernel@...r.kernel.org>, <linux-xfs@...r.kernel.org>,
        <linux-nvdimm@...ts.01.org>, <linux-mm@...ck.org>,
        <linux-fsdevel@...r.kernel.org>, <dm-devel@...hat.com>
CC:     <darrick.wong@...cle.com>, <dan.j.williams@...el.com>,
        <david@...morbit.com>, <hch@....de>, <agk@...hat.com>,
        <snitzer@...hat.com>, <rgoldwyn@...e.de>
Subject: [PATCH v4 03/10] fs: Introduce ->corrupted_range() for superblock

Memory failure occurs in fsdax mode will finally be handled in
filesystem.  We introduce this interface to find out files or metadata
affected by the corrupted range, and try to recover the corrupted data
if possiable.

Signed-off-by: Shiyang Ruan <ruansy.fnst@...itsu.com>
---
 include/linux/fs.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index c3c88fdb9b2a..92af36c4225f 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2176,6 +2176,8 @@ struct super_operations {
 				  struct shrink_control *);
 	long (*free_cached_objects)(struct super_block *,
 				    struct shrink_control *);
+	int (*corrupted_range)(struct super_block *sb, struct block_device *bdev,
+			       loff_t offset, size_t len, void *data);
 };
 
 /*
-- 
2.31.1