vfs: call vfs_clone_file_range() under freeze protection
Move sb_start_write()/sb_end_write() out of the vfs helper and up into the
ioctl handler.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
diff --git a/include/linux/fs.h b/include/linux/fs.h
index dc0478c..52663f1 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1783,6 +1783,19 @@ extern int vfs_clone_file_range(struct file *file_in, loff_t pos_in,
extern int vfs_dedupe_file_range(struct file *file,
struct file_dedupe_range *same);
+static inline int do_clone_file_range(struct file *file_in, loff_t pos_in,
+ struct file *file_out, loff_t pos_out,
+ u64 len)
+{
+ int ret;
+
+ sb_start_write(file_inode(file_out)->i_sb);
+ ret = vfs_clone_file_range(file_in, pos_in, file_out, pos_out, len);
+ sb_end_write(file_inode(file_out)->i_sb);
+
+ return ret;
+}
+
struct super_operations {
struct inode *(*alloc_inode)(struct super_block *sb);
void (*destroy_inode)(struct inode *);