[PATCH] io_uring: style: redundant NULL check.

[YANG LI]

If the pointer in kfree is empty, the function does nothing,
so remove the redundant NULL check.

Signed-off-by: YANG LI <abaci-bug...@linux.alibaba.com>
Reported-by: Abaci <ab...@linux.alibaba.com>
---
 fs/io_uring.c | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 7e35283..105e188 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1934,8 +1934,8 @@ static void io_dismantle_req(struct io_kiocb *req)
 {
        io_clean_op(req);
 
-       if (req->async_data)
-               kfree(req->async_data);
+       kfree(req->async_data);
+
        if (req->file)
                io_put_file(req, req->file, (req->flags & REQ_F_FIXED_FILE));
        if (req->fixed_file_refs)
@@ -3537,8 +3537,7 @@ static int io_read(struct io_kiocb *req, bool 
force_nonblock,
        ret = 0;
 out_free:
        /* it's reportedly faster than delegating the null check to kfree() */
-       if (iovec)
-               kfree(iovec);
+       kfree(iovec);
        return ret;
 }
 
@@ -3644,8 +3643,7 @@ static int io_write(struct io_kiocb *req, bool 
force_nonblock,
        }
 out_free:
        /* it's reportedly faster than delegating the null check to kfree() */
-       if (iovec)
-               kfree(iovec);
+       kfree(iovec);
        return ret;
 }
 
@@ -6133,8 +6131,7 @@ static void __io_clean_op(struct io_kiocb *req)
                case IORING_OP_WRITE_FIXED:
                case IORING_OP_WRITE: {
                        struct io_async_rw *io = req->async_data;
-                       if (io->free_iovec)
-                               kfree(io->free_iovec);
+                       kfree(io->free_iovec);
                        break;
                        }
                case IORING_OP_RECVMSG:
-- 
1.8.3.1