[PATCH v2 4/4] erofs: unexport erofs_xattr_prefix()

[Gao Xiang <hsiangkao@linux.alibaba.com>]

It can be simply in xattr.c due to no external users.

Reviewed-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
---
v2:
 - fix sparse warnings:
     https://lore.kernel.org/r/202512311021.L0IMtTOh-lkp@intel.com

 fs/erofs/xattr.c | 31 ++++++++++++++++++++++++++++---
 fs/erofs/xattr.h | 30 ------------------------------
 2 files changed, 28 insertions(+), 33 deletions(-)

diff --git a/fs/erofs/xattr.c b/fs/erofs/xattr.c
index 972941ecb71c..f8668157162f 100644
--- a/fs/erofs/xattr.c
+++ b/fs/erofs/xattr.c
@@ -25,6 +25,8 @@ struct erofs_xattr_iter {
 	struct dentry *dentry;
 };
 
+static const char *erofs_xattr_prefix(unsigned int idx, struct dentry *dentry);
+
 static int erofs_init_inode_xattrs(struct inode *inode)
 {
 	struct erofs_inode *const vi = EROFS_I(inode);
@@ -431,14 +433,14 @@ static int erofs_xattr_generic_get(const struct xattr_handler *handler,
 	return erofs_getxattr(inode, handler->flags, name, buffer, size);
 }
 
-const struct xattr_handler erofs_xattr_user_handler = {
+static const struct xattr_handler erofs_xattr_user_handler = {
 	.prefix	= XATTR_USER_PREFIX,
 	.flags	= EROFS_XATTR_INDEX_USER,
 	.list	= erofs_xattr_user_list,
 	.get	= erofs_xattr_generic_get,
 };
 
-const struct xattr_handler erofs_xattr_trusted_handler = {
+static const struct xattr_handler erofs_xattr_trusted_handler = {
 	.prefix	= XATTR_TRUSTED_PREFIX,
 	.flags	= EROFS_XATTR_INDEX_TRUSTED,
 	.list	= erofs_xattr_trusted_list,
@@ -446,7 +448,7 @@ const struct xattr_handler erofs_xattr_trusted_handler = {
 };
 
 #ifdef CONFIG_EROFS_FS_SECURITY
-const struct xattr_handler __maybe_unused erofs_xattr_security_handler = {
+static const struct xattr_handler erofs_xattr_security_handler = {
 	.prefix	= XATTR_SECURITY_PREFIX,
 	.flags	= EROFS_XATTR_INDEX_SECURITY,
 	.get	= erofs_xattr_generic_get,
@@ -462,6 +464,29 @@ const struct xattr_handler * const erofs_xattr_handlers[] = {
 	NULL,
 };
 
+static const char *erofs_xattr_prefix(unsigned int idx, struct dentry *dentry)
+{
+	static const struct xattr_handler * const xattr_handler_map[] = {
+		[EROFS_XATTR_INDEX_USER] = &erofs_xattr_user_handler,
+#ifdef CONFIG_EROFS_FS_POSIX_ACL
+		[EROFS_XATTR_INDEX_POSIX_ACL_ACCESS] = &nop_posix_acl_access,
+		[EROFS_XATTR_INDEX_POSIX_ACL_DEFAULT] = &nop_posix_acl_default,
+#endif
+		[EROFS_XATTR_INDEX_TRUSTED] = &erofs_xattr_trusted_handler,
+#ifdef CONFIG_EROFS_FS_SECURITY
+		[EROFS_XATTR_INDEX_SECURITY] = &erofs_xattr_security_handler,
+#endif
+	};
+	const struct xattr_handler *handler = NULL;
+
+	if (idx && idx < ARRAY_SIZE(xattr_handler_map)) {
+		handler = xattr_handler_map[idx];
+		if (xattr_handler_can_list(handler, dentry))
+			return xattr_prefix(handler);
+	}
+	return NULL;
+}
+
 void erofs_xattr_prefixes_cleanup(struct super_block *sb)
 {
 	struct erofs_sb_info *sbi = EROFS_SB(sb);
diff --git a/fs/erofs/xattr.h b/fs/erofs/xattr.h
index ee1d8c310d97..36f2667afc2d 100644
--- a/fs/erofs/xattr.h
+++ b/fs/erofs/xattr.h
@@ -11,36 +11,6 @@
 #include <linux/xattr.h>
 
 #ifdef CONFIG_EROFS_FS_XATTR
-extern const struct xattr_handler erofs_xattr_user_handler;
-extern const struct xattr_handler erofs_xattr_trusted_handler;
-extern const struct xattr_handler erofs_xattr_security_handler;
-
-static inline const char *erofs_xattr_prefix(unsigned int idx,
-					     struct dentry *dentry)
-{
-	const struct xattr_handler *handler = NULL;
-
-	static const struct xattr_handler * const xattr_handler_map[] = {
-		[EROFS_XATTR_INDEX_USER] = &erofs_xattr_user_handler,
-#ifdef CONFIG_EROFS_FS_POSIX_ACL
-		[EROFS_XATTR_INDEX_POSIX_ACL_ACCESS] = &nop_posix_acl_access,
-		[EROFS_XATTR_INDEX_POSIX_ACL_DEFAULT] = &nop_posix_acl_default,
-#endif
-		[EROFS_XATTR_INDEX_TRUSTED] = &erofs_xattr_trusted_handler,
-#ifdef CONFIG_EROFS_FS_SECURITY
-		[EROFS_XATTR_INDEX_SECURITY] = &erofs_xattr_security_handler,
-#endif
-	};
-
-	if (idx && idx < ARRAY_SIZE(xattr_handler_map))
-		handler = xattr_handler_map[idx];
-
-	if (!xattr_handler_can_list(handler, dentry))
-		return NULL;
-
-	return xattr_prefix(handler);
-}
-
 extern const struct xattr_handler * const erofs_xattr_handlers[];
 
 int erofs_xattr_prefixes_init(struct super_block *sb);
-- 
2.43.5