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authorMiklos Szeredi <mszeredi@redhat.com>2016-09-27 11:45:12 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2016-10-06 01:23:57 +0300
commit7bf2d1df80822ec056363627e2014990f068f7aa (patch)
tree27001759d32eb13264bb03453c24a59d43b0cb4b /include/linux/pipe_fs_i.h
parenta7c2242166eb4b4447b0145705e4b66f5be89798 (diff)
downloadlinux-7bf2d1df80822ec056363627e2014990f068f7aa.tar.xz
pipe: add pipe_buf_get() 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.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index 24f5470d3944..10876f3cb3da 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -115,6 +115,17 @@ struct pipe_buf_operations {
void (*get)(struct pipe_inode_info *, struct pipe_buffer *);
};
+/**
+ * pipe_buf_get - get a reference to a pipe_buffer
+ * @pipe: the pipe that the buffer belongs to
+ * @buf: the buffer to get a reference to
+ */
+static inline void pipe_buf_get(struct pipe_inode_info *pipe,
+ struct pipe_buffer *buf)
+{
+ buf->ops->get(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