From b97cca3ba9098522e5a1c3388764ead42640c1a5 Mon Sep 17 00:00:00 2001
From: "Darrick J. Wong" <djwong@kernel.org>
Date: Thu, 3 Feb 2022 08:29:21 -0800
Subject: [PATCH] xfs: only bother with sync_filesystem during readonly remount
Git-commit: b97cca3ba9098522e5a1c3388764ead42640c1a5
Patch-mainline: v5.17-rc6
References: git-fixes
In commit 02b9984d6408, we pushed a sync_filesystem() call from the VFS
into xfs_fs_remount. The only time that we ever need to push dirty file
data or metadata to disk for a remount is if we're remounting the
filesystem read only, so this really could be moved to xfs_remount_ro.
Once we've moved the call site, actually check the return value from
sync_filesystem.
Fixes: 02b9984d6408 ("fs: push sync_filesystem() down to the file system's remount_fs()")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Acked-by: Anthony Iliopoulos <ailiop@suse.com>
---
fs/xfs/xfs_super.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1709,6 +1709,11 @@ xfs_remount_ro(
};
int error;
+ /* Flush all the dirty data to disk. */
+ error = sync_filesystem(mp->m_super);
+ if (error)
+ return error;
+
/*
* Cancel background eofb scanning so it cannot race with the final
* log force+buftarg wait and deadlock the remount.
@@ -1779,8 +1784,6 @@ xfs_fs_reconfigure(
if (error)
return error;
- sync_filesystem(mp->m_super);
-
/* inode32 -> inode64 */
if ((mp->m_flags & XFS_MOUNT_SMALL_INUMS) &&
!(new_mp->m_flags & XFS_MOUNT_SMALL_INUMS)) {