From ca76f5b6bdbdc50af0d7b98cfcf7a2be7e95eb3d Mon Sep 17 00:00:00 2001 From: Miklos Szeredi Date: Tue, 27 Sep 2016 10:45:12 +0200 Subject: pipe: add pipe_buf_steal() helper Signed-off-by: Miklos Szeredi Signed-off-by: Al Viro --- include/linux/pipe_fs_i.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/linux/pipe_fs_i.h') diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h index 654413334537..bddccf0159bb 100644 --- a/include/linux/pipe_fs_i.h +++ b/include/linux/pipe_fs_i.h @@ -151,6 +151,17 @@ static inline int pipe_buf_confirm(struct pipe_inode_info *pipe, return buf->ops->confirm(pipe, buf); } +/** + * pipe_buf_steal - attempt to take ownership of a pipe_buffer + * @pipe: the pipe that the buffer belongs to + * @buf: the buffer to attempt to steal + */ +static inline int pipe_buf_steal(struct pipe_inode_info *pipe, + struct pipe_buffer *buf) +{ + return buf->ops->steal(pipe, buf); +} + /* Differs from PIPE_BUF in that PIPE_SIZE is the length of the actual memory allocation, whereas PIPE_BUF makes atomicity guarantees. */ #define PIPE_SIZE PAGE_SIZE -- cgit