ocfs2: fix i_mutex locking in ocfs2_splice_to_file()

Rearrange locking of i_mutex on destination and call to
ocfs2_rw_lock() so locks are only held while buffers are copied with
the pipe_to_file() actor, and not while waiting for more data on the
pipe.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/splice.h b/include/linux/splice.h
index 8fc2a635586e..5f3faa9d15ae 100644
--- a/include/linux/splice.h
+++ b/include/linux/splice.h
@@ -75,6 +75,8 @@ extern int splice_from_pipe_next(struct pipe_inode_info *,
 extern void splice_from_pipe_begin(struct splice_desc *);
 extern void splice_from_pipe_end(struct pipe_inode_info *,
                                  struct splice_desc *);
+extern int pipe_to_file(struct pipe_inode_info *, struct pipe_buffer *,
+                        struct splice_desc *);
 
 extern ssize_t splice_to_pipe(struct pipe_inode_info *,
                               struct splice_pipe_desc *);