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| author | Miklos Szeredi | 2016-09-27 10:45:12 +0200 |
|---|---|---|
| committer | Al Viro | 2016-10-06 00:23:58 +0200 |
| commit | a779638cf622f069a484e8802134cca3c6c71415 (patch) | |
| tree | a9eb77b635e86421465f6e06d1e29bc406cfdc8c /include/linux/pipe_fs_i.h | |
| parent | pipe: add pipe_buf_get() helper (diff) | |
| download | kernel-qcow2-linux-a779638cf622f069a484e8802134cca3c6c71415.tar.gz kernel-qcow2-linux-a779638cf622f069a484e8802134cca3c6c71415.tar.xz kernel-qcow2-linux-a779638cf622f069a484e8802134cca3c6c71415.zip | |
pipe: add pipe_buf_release() helper
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux/pipe_fs_i.h')
| -rw-r--r-- | include/linux/pipe_fs_i.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h index 10876f3cb3da..d24fa6da6ae3 100644 --- a/include/linux/pipe_fs_i.h +++ b/include/linux/pipe_fs_i.h @@ -126,6 +126,20 @@ static inline void pipe_buf_get(struct pipe_inode_info *pipe, buf->ops->get(pipe, buf); } +/** + * pipe_buf_release - put a reference to a pipe_buffer + * @pipe: the pipe that the buffer belongs to + * @buf: the buffer to put a reference to + */ +static inline void pipe_buf_release(struct pipe_inode_info *pipe, + struct pipe_buffer *buf) +{ + const struct pipe_buf_operations *ops = buf->ops; + + buf->ops = NULL; + ops->release(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 |