pipe: allow passing around of ops private pointer

relay needs this for proper consumption handling, and the network
receive support needs it as well to lookup the sk_buff on pipe
release.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index 7ba228d52f58..4409167b9eb2 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -14,6 +14,7 @@ struct pipe_buffer {
         unsigned int offset, len;
         const struct pipe_buf_operations *ops;
         unsigned int flags;
+        unsigned long private;
 };
 
 struct pipe_inode_info {