linux-ext4 - [PATCH 5/6] xfs: translate fsdax media errors into file "data lost" errors when convenient

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Message-ID: <176602332235.686273.16829192636161125674.stgit@frogsfrogsfrogs>
Date: Wed, 17 Dec 2025 18:03:58 -0800
From: "Darrick J. Wong" <djwong@...nel.org>
To: brauner@...nel.org, djwong@...nel.org
Cc: linux-ext4@...r.kernel.org, jack@...e.cz, linux-xfs@...r.kernel.org,
 linux-fsdevel@...r.kernel.org, gabriel@...sman.be, hch@....de,
 amir73il@...il.com
Subject: [PATCH 5/6] xfs: translate fsdax media errors into file "data lost"
 errors when convenient

From: Darrick J. Wong <djwong@...nel.org>

Translate fsdax persistent failure notifications into file data loss
events when it's convenient, aka when the inode is already incore.

Signed-off-by: "Darrick J. Wong" <djwong@...nel.org>
---
 fs/xfs/xfs_notify_failure.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/xfs/xfs_notify_failure.c b/fs/xfs/xfs_notify_failure.c
index b1767288994206..6d5002413c2cb4 100644
--- a/fs/xfs/xfs_notify_failure.c
+++ b/fs/xfs/xfs_notify_failure.c
@@ -26,6 +26,7 @@
 #include <linux/mm.h>
 #include <linux/dax.h>
 #include <linux/fs.h>
+#include <linux/fserror.h>

 struct xfs_failure_info {
 	xfs_agblock_t		startblock;
@@ -116,6 +117,9 @@ xfs_dax_failure_fn(
 		invalidate_inode_pages2_range(mapping, pgoff,
 					      pgoff + pgcnt - 1);

+	fserror_report_data_lost(VFS_I(ip), (u64)pgoff << PAGE_SHIFT,
+			(u64)pgcnt << PAGE_SHIFT, GFP_NOFS);
+
 	xfs_irele(ip);
 	return error;
 }