linux-kernel - [PATCH 3/3] ovl: Enable support for casefold filesystems

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Message-Id: <20250409-tonyk-overlayfs-v1-3-3991616fe9a3@igalia.com>
Date: Wed, 09 Apr 2025 12:00:43 -0300
From: André Almeida <andrealmeid@...lia.com>
To: Miklos Szeredi <miklos@...redi.hu>, Amir Goldstein <amir73il@...il.com>, 
 Theodore Tso <tytso@....edu>, Gabriel Krisman Bertazi <krisman@...nel.org>
Cc: linux-unionfs@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-fsdevel@...r.kernel.org, Alexander Viro <viro@...iv.linux.org.uk>, 
 Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>, 
 kernel-dev@...lia.com, 
 André Almeida <andrealmeid@...lia.com>
Subject: [PATCH 3/3] ovl: Enable support for casefold filesystems

Enable support for casefold filesystems in overlayfs.

Signed-off-by: André Almeida <andrealmeid@...lia.com>
---
 fs/overlayfs/params.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/overlayfs/params.c b/fs/overlayfs/params.c
index 459e8bddf1777c12c9fa0bdfc150e2ea22eaafc3..28a660f09cff2573c648a00363c153be3903aa5b 100644
--- a/fs/overlayfs/params.c
+++ b/fs/overlayfs/params.c
@@ -289,7 +289,7 @@ static int ovl_mount_dir_check(struct fs_context *fc, const struct path *path,
 	 * failures.
 	 */
 	if (sb_has_encoding(path->mnt->mnt_sb))
-		return invalfc(fc, "case-insensitive capable filesystem on %s not supported", name);
+		ovl->casefold = true;
 
 	if (ovl_dentry_weird(path->dentry, ovl))
 		return invalfc(fc, "filesystem on %s not supported", name);

-- 
2.49.0