linux-kernel - [PATCH v8 3/9] erofs: move `struct erofs_anon_fs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251114095516.207555-4-lihongbo22@huawei.com>
Date: Fri, 14 Nov 2025 09:55:10 +0000
From: Hongbo Li <lihongbo22@...wei.com>
To: <hsiangkao@...ux.alibaba.com>, <chao@...nel.org>, <brauner@...nel.org>,
	<djwong@...nel.org>, <amir73il@...il.com>, <joannelkoong@...il.com>
CC: <linux-fsdevel@...r.kernel.org>, <linux-erofs@...ts.ozlabs.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH v8 3/9] erofs: move `struct erofs_anon_fs_type` to super.c

From: Hongzhen Luo <hongzhen@...ux.alibaba.com>

Move the `struct erofs_anon_fs_type` to the super.c and
expose it in preparation for the upcoming page cache share
feature.

Signed-off-by: Hongzhen Luo <hongzhen@...ux.alibaba.com>
Signed-off-by: Hongbo Li <lihongbo22@...wei.com>
---
 fs/erofs/fscache.c  | 13 -------------
 fs/erofs/internal.h |  4 ++++
 fs/erofs/super.c    | 15 +++++++++++++++
 3 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/fs/erofs/fscache.c b/fs/erofs/fscache.c
index 362acf828279..2d1683479fc0 100644
--- a/fs/erofs/fscache.c
+++ b/fs/erofs/fscache.c
@@ -3,7 +3,6 @@
  * Copyright (C) 2022, Alibaba Cloud
  * Copyright (C) 2022, Bytedance Inc. All rights reserved.
  */
-#include <linux/pseudo_fs.h>
 #include <linux/fscache.h>
 #include "internal.h"
 
@@ -13,18 +12,6 @@ static LIST_HEAD(erofs_domain_list);
 static LIST_HEAD(erofs_domain_cookies_list);
 static struct vfsmount *erofs_pseudo_mnt;
 
-static int erofs_anon_init_fs_context(struct fs_context *fc)
-{
-	return init_pseudo(fc, EROFS_SUPER_MAGIC) ? 0 : -ENOMEM;
-}
-
-static struct file_system_type erofs_anon_fs_type = {
-	.owner		= THIS_MODULE,
-	.name           = "pseudo_erofs",
-	.init_fs_context = erofs_anon_init_fs_context,
-	.kill_sb        = kill_anon_super,
-};
-
 struct erofs_fscache_io {
 	struct netfs_cache_resources cres;
 	struct iov_iter		iter;
diff --git a/fs/erofs/internal.h b/fs/erofs/internal.h
index f7f622836198..e80b35db18e4 100644
--- a/fs/erofs/internal.h
+++ b/fs/erofs/internal.h
@@ -188,6 +188,10 @@ static inline bool erofs_is_fileio_mode(struct erofs_sb_info *sbi)
 	return IS_ENABLED(CONFIG_EROFS_FS_BACKED_BY_FILE) && sbi->dif0.file;
 }
 
+#if defined(CONFIG_EROFS_FS_ONDEMAND)
+extern struct file_system_type erofs_anon_fs_type;
+#endif
+
 static inline bool erofs_is_fscache_mode(struct super_block *sb)
 {
 	return IS_ENABLED(CONFIG_EROFS_FS_ONDEMAND) &&
diff --git a/fs/erofs/super.c b/fs/erofs/super.c
index f3f8d8c066e4..0d88c04684b9 100644
--- a/fs/erofs/super.c
+++ b/fs/erofs/super.c
@@ -11,6 +11,7 @@
 #include <linux/fs_parser.h>
 #include <linux/exportfs.h>
 #include <linux/backing-dev.h>
+#include <linux/pseudo_fs.h>
 #include "xattr.h"
 
 #define CREATE_TRACE_POINTS
@@ -920,6 +921,20 @@ static struct file_system_type erofs_fs_type = {
 };
 MODULE_ALIAS_FS("erofs");
 
+#if defined(CONFIG_EROFS_FS_ONDEMAND)
+static int erofs_anon_init_fs_context(struct fs_context *fc)
+{
+	return init_pseudo(fc, EROFS_SUPER_MAGIC) ? 0 : -ENOMEM;
+}
+
+struct file_system_type erofs_anon_fs_type = {
+	.owner		= THIS_MODULE,
+	.name           = "pseudo_erofs",
+	.init_fs_context = erofs_anon_init_fs_context,
+	.kill_sb        = kill_anon_super,
+};
+#endif
+
 static int __init erofs_module_init(void)
 {
 	int err;
-- 
2.22.0