add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/oprofile/oprofilefs.c
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@@ -14,6 +14,7 @@
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 #include <linux/module.h>
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 #include <linux/oprofile.h>
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 #include <linux/fs.h>
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+#include <linux/fs_context.h>
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 #include <linux/pagemap.h>
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 #include <linux/uaccess.h>
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@@ -238,7 +239,7 @@
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 }
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-static int oprofilefs_fill_super(struct super_block *sb, void *data, int silent)
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+static int oprofilefs_fill_super(struct super_block *sb, struct fs_context *fc)
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 {
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 	struct inode *root_inode;
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@@ -263,18 +264,25 @@
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 	return 0;
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 }
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-
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-static struct dentry *oprofilefs_mount(struct file_system_type *fs_type,
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-	int flags, const char *dev_name, void *data)
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+static int oprofilefs_get_tree(struct fs_context *fc)
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 {
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-	return mount_single(fs_type, flags, data, oprofilefs_fill_super);
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+	return get_tree_single(fc, oprofilefs_fill_super);
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 }
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+static const struct fs_context_operations oprofilefs_context_ops = {
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+	.get_tree	= oprofilefs_get_tree,
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+};
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+
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+static int oprofilefs_init_fs_context(struct fs_context *fc)
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+{
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+	fc->ops = &oprofilefs_context_ops;
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+	return 0;
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+}
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 static struct file_system_type oprofilefs_type = {
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 	.owner		= THIS_MODULE,
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 	.name		= "oprofilefs",
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-	.mount		= oprofilefs_mount,
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+	.init_fs_context = oprofilefs_init_fs_context,
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 	.kill_sb	= kill_litter_super,
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 };
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 MODULE_ALIAS_FS("oprofilefs");