linux-ext4 - [PATCH 3/3] fuse2fs: recheck support after replaying journal

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Message-ID: <175798064633.349841.13728896501759012525.stgit@frogsfrogsfrogs>
Date: Mon, 15 Sep 2025 17:02:58 -0700
From: "Darrick J. Wong" <djwong@...nel.org>
To: tytso@....edu
Cc: linux-ext4@...r.kernel.org
Subject: [PATCH 3/3] fuse2fs: recheck support after replaying journal

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

The journal could have contained a new primary superblock, so we need to
recheck feature support after recovering it.

Signed-off-by: "Darrick J. Wong" <djwong@...nel.org>
---
 misc/fuse2fs.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/misc/fuse2fs.c b/misc/fuse2fs.c
index 5917569c0a8d32..48473321f469dc 100644
--- a/misc/fuse2fs.c
+++ b/misc/fuse2fs.c
@@ -1045,6 +1045,10 @@ static int fuse2fs_mount(struct fuse2fs *ff)
 			fs = ff->fs;
 			ext2fs_clear_feature_journal_needs_recovery(fs->super);
 			ext2fs_mark_super_dirty(fs);
+
+			err = fuse2fs_check_support(ff);
+			if (err)
+				return err;
 		}
 	}