vfs: export do_splice_direct() to modules

Export do_splice_direct() to modules.  Needed by overlay filesystem.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

3 files changed, 4 insertions, 6 deletions

diff --git a/fs/internal.h b/fs/internal.h
index 9477f8f6aefc..0f0626a6997c 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -139,12 +139,6 @@ extern long prune_dcache_sb(struct super_block *sb, unsigned long nr_to_scan,
 extern int rw_verify_area(int, struct file *, const loff_t *, size_t);
 
 /*
- * splice.c
- */
-extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
-                loff_t *opos, size_t len, unsigned int flags);
-
-/*
  * pipe.c
  */
 extern const struct file_operations pipefifo_fops;
diff --git a/fs/splice.c b/fs/splice.c
index f5cb9ba84510..75c6058eabf2 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1330,6 +1330,7 @@ long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
 
         return ret;
 }
+EXPORT_SYMBOL(do_splice_direct);
 
 static int splice_pipe_to_pipe(struct pipe_inode_info *ipipe,
                                struct pipe_inode_info *opipe,
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 5cf7f6759679..10ed65b2c31d 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2456,6 +2456,9 @@ extern ssize_t iter_file_splice_write(struct pipe_inode_info *,
                 struct file *, loff_t *, size_t, unsigned int);
 extern ssize_t generic_splice_sendpage(struct pipe_inode_info *pipe,
                 struct file *out, loff_t *, size_t len, unsigned int flags);
+extern long do_splice_direct(struct file *in, loff_t *ppos, struct file *out,
+                loff_t *opos, size_t len, unsigned int flags);
+
 
 extern void
 file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping);