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Commit f1825366 authored by Miklos Szeredi's avatar Miklos Szeredi
Browse files

vfs: export vfs_dedupe_file_range_one() to modules 



This is needed by the stacked dedupe implementation in overlayfs.

Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
parent 9df6702a

fs/read_write.c

+3 −3
Original line number Diff line number Diff line
@@ -1964,9 +1964,8 @@ int vfs_dedupe_file_range_compare(struct inode *src, loff_t srcoff, 
}

EXPORT_SYMBOL(vfs_dedupe_file_range_compare);



static int vfs_dedupe_file_range_one(struct file *src_file, loff_t src_pos,

				     struct file *dst_file, loff_t dst_pos,

				     u64 len)

int vfs_dedupe_file_range_one(struct file *src_file, loff_t src_pos,

			      struct file *dst_file, loff_t dst_pos, u64 len)

{

	s64 ret;
@@ -2001,6 +2000,7 @@ static int vfs_dedupe_file_range_one(struct file *src_file, loff_t src_pos, 


	return ret;

}

EXPORT_SYMBOL(vfs_dedupe_file_range_one);



int vfs_dedupe_file_range(struct file *file, struct file_dedupe_range *same)

{

include/linux/fs.h

+4 −0
Original line number Diff line number Diff line
@@ -1829,6 +1829,10 @@ extern int vfs_dedupe_file_range_compare(struct inode *src, loff_t srcoff, 
					 loff_t len, bool *is_same);

extern int vfs_dedupe_file_range(struct file *file,

				 struct file_dedupe_range *same);

extern int vfs_dedupe_file_range_one(struct file *src_file, loff_t src_pos,

				     struct file *dst_file, loff_t dst_pos,

				     u64 len);





struct super_operations {

   	struct inode *(*alloc_inode)(struct super_block *sb);