proc: introduce proc_create_seq_private

Variant of proc_create_data that directly take a struct seq_operations
argument + a private state size and drastically reduces the boilerplate
code in the callers.

All trivial callers converted over.

Signed-off-by: Christoph Hellwig <hch@lst.de>

2 files changed, 7 insertions, 3 deletions

diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index af644caaaf85..f87cb0053387 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -560,6 +560,8 @@ static int proc_seq_open(struct inode *inode, struct file *file)
 {
 	struct proc_dir_entry *de = PDE(inode);
 
+	if (de->state_size)
+		return seq_open_private(file, de->seq_ops, de->state_size);
 	return seq_open(file, de->seq_ops);
 }
 
@@ -570,9 +572,9 @@ static const struct file_operations proc_seq_fops = {
 	.release	= seq_release,
 };
 
-struct proc_dir_entry *proc_create_seq_data(const char *name, umode_t mode,
+struct proc_dir_entry *proc_create_seq_private(const char *name, umode_t mode,
 		struct proc_dir_entry *parent, const struct seq_operations *ops,
-		void *data)
+		unsigned int state_size, void *data)
 {
 	struct proc_dir_entry *p;
 
@@ -581,9 +583,10 @@ struct proc_dir_entry *proc_create_seq_data(const char *name, umode_t mode,
 		return NULL;
 	p->proc_fops = &proc_seq_fops;
 	p->seq_ops = ops;
+	p->state_size = state_size;
 	return proc_register(parent, p);
 }
-EXPORT_SYMBOL(proc_create_seq_data);
+EXPORT_SYMBOL(proc_create_seq_private);
 
 void proc_set_size(struct proc_dir_entry *de, loff_t size)
 {
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 4fb01c5f9c1a..bcfe830ffd59 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -46,6 +46,7 @@ struct proc_dir_entry {
 	const struct file_operations *proc_fops;
 	const struct seq_operations *seq_ops;
 	void *data;
+	unsigned int state_size;
 	unsigned int low_ino;
 	nlink_t nlink;
 	kuid_t uid;