linux-kernel - [PATCH] userns: Add forward declaration of struct seq_file in user

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Message-ID: <aDlty06JvlGwTfKk@gondor.apana.org.au>
Date: Fri, 30 May 2025 16:35:23 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: [PATCH] userns: Add forward declaration of struct seq_file in
 user_namespace.h

Add forward declaration of struct seq_file before using it in
function prototype.

Fixes: 9cc46516ddf4 ("userns: Add a knob to disable setgroups on a per user namespace basis")
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h
index a0bb6d012137..5c7aa940b1aa 100644
--- a/include/linux/user_namespace.h
+++ b/include/linux/user_namespace.h
@@ -16,6 +16,8 @@
 #define UID_GID_MAP_MAX_BASE_EXTENTS 5
 #define UID_GID_MAP_MAX_EXTENTS 340
 
+struct seq_file;
+
 struct uid_gid_extent {
 	u32 first;
 	u32 lower_first;
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt