In preparation for using this helper in kbuf.h as well, move it there and
turn it into a macro.
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
---
io_uring/kbuf.c | 6 ------
io_uring/kbuf.h | 3 +++
2 files changed, 3 insertions(+), 6 deletions(-)
diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c
index e43f761fa073..0aa12703bac7 100644
--- a/io_uring/kbuf.c
+++ b/io_uring/kbuf.c
@@ -132,12 +132,6 @@ static int io_provided_buffers_select(struct io_kiocb *req, size_t *len,
return 0;
}
-static struct io_uring_buf *io_ring_head_to_buf(struct io_uring_buf_ring *br,
- __u16 head, __u16 mask)
-{
- return &br->bufs[head & mask];
-}
-
static void __user *io_ring_buffer_select(struct io_kiocb *req, size_t *len,
struct io_buffer_list *bl,
unsigned int issue_flags)
diff --git a/io_uring/kbuf.h b/io_uring/kbuf.h
index c9798663cd9f..b7da3ce880bf 100644
--- a/io_uring/kbuf.h
+++ b/io_uring/kbuf.h
@@ -121,6 +121,9 @@ static inline bool io_kbuf_recycle(struct io_kiocb *req, unsigned issue_flags)
return false;
}
+/* Mapped buffer ring, return io_uring_buf from head */
+#define io_ring_head_to_buf(br, head, mask) &(br)->bufs[(head) & (mask)]
+
static inline void io_kbuf_commit(struct io_kiocb *req,
struct io_buffer_list *bl, int nr)
{
--
2.43.0
