[PATCH 5.19 3/3] io_uring: remove IORING_CLOSE_FD_AND_FILE_SLOT

[Pavel Begunkov <asml.silence@gmail.com>]

This partially reverts a7c41b4687f5902af70cd559806990930c8a307b

Even though IORING_CLOSE_FD_AND_FILE_SLOT might save cycles for some
users, but it tries to do two things at a time and it's not clear how to
handle errors and what to return in a single result field when one part
fails and another completes well. Kill it for now.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
---
 fs/io_uring.c                 | 12 +++---------
 include/uapi/linux/io_uring.h |  6 ------
 2 files changed, 3 insertions(+), 15 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 1b95c6750a81..1b0b6099e717 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -576,7 +576,6 @@ struct io_close {
 	struct file			*file;
 	int				fd;
 	u32				file_slot;
-	u32				flags;
 };
 
 struct io_timeout_data {
@@ -5966,18 +5965,14 @@ static int io_statx(struct io_kiocb *req, unsigned int issue_flags)
 
 static int io_close_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe)
 {
-	if (sqe->off || sqe->addr || sqe->len || sqe->buf_index)
+	if (sqe->off || sqe->addr || sqe->len || sqe->rw_flags || sqe->buf_index)
 		return -EINVAL;
 	if (req->flags & REQ_F_FIXED_FILE)
 		return -EBADF;
 
 	req->close.fd = READ_ONCE(sqe->fd);
 	req->close.file_slot = READ_ONCE(sqe->file_index);
-	req->close.flags = READ_ONCE(sqe->close_flags);
-	if (req->close.flags & ~IORING_CLOSE_FD_AND_FILE_SLOT)
-		return -EINVAL;
-	if (!(req->close.flags & IORING_CLOSE_FD_AND_FILE_SLOT) &&
-	    req->close.file_slot && req->close.fd)
+	if (req->close.file_slot && req->close.fd)
 		return -EINVAL;
 
 	return 0;
@@ -5993,8 +5988,7 @@ static int io_close(struct io_kiocb *req, unsigned int issue_flags)
 
 	if (req->close.file_slot) {
 		ret = io_close_fixed(req, issue_flags);
-		if (ret || !(req->close.flags & IORING_CLOSE_FD_AND_FILE_SLOT))
-			goto err;
+		goto err;
 	}
 
 	spin_lock(&files->file_lock);
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h
index 776e0278f9dd..53e7dae92e42 100644
--- a/include/uapi/linux/io_uring.h
+++ b/include/uapi/linux/io_uring.h
@@ -47,7 +47,6 @@ struct io_uring_sqe {
 		__u32		unlink_flags;
 		__u32		hardlink_flags;
 		__u32		xattr_flags;
-		__u32		close_flags;
 	};
 	__u64	user_data;	/* data to be passed back at completion time */
 	/* pack this to avoid bogus arm OABI complaints */
@@ -259,11 +258,6 @@ enum io_uring_op {
  */
 #define IORING_ACCEPT_MULTISHOT	(1U << 0)
 
-/*
- * close flags, store in sqe->close_flags
- */
-#define IORING_CLOSE_FD_AND_FILE_SLOT	(1U << 0)
-
 /*
  * IO completion data structure (Completion Queue Entry)
  */
-- 
2.36.1