io_uring: inline io_import_iovec()

Inline io_import_iovec() and leave only its former __io_import_iovec()
renamed to the original name. That makes it more obious what is reused in
io_read/write().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/fs/io_uring.c b/fs/io_uring.c
index b74048b..12a213b 100644 (file)
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3150,7 +3150,7 @@ static ssize_t io_iov_buffer_select(struct io_kiocb *req, struct iovec *iov,
        return __io_iov_buffer_select(req, iov, needs_lock);
 }
 
-static ssize_t __io_import_iovec(int rw, struct io_kiocb *req,
+static ssize_t io_import_iovec(int rw, struct io_kiocb *req,
                                 struct iovec **iovec, struct iov_iter *iter,
                                 bool needs_lock)
 {
@@ -3196,18 +3196,6 @@ static ssize_t __io_import_iovec(int rw, struct io_kiocb *req,
                              req->ctx->compat);
 }
 
-static ssize_t io_import_iovec(int rw, struct io_kiocb *req,
-                              struct iovec **iovec, struct iov_iter *iter,
-                              bool needs_lock)
-{
-       struct io_async_rw *iorw = req->async_data;
-
-       if (!iorw)
-               return __io_import_iovec(rw, req, iovec, iter, needs_lock);
-       *iovec = NULL;
-       return 0;
-}
-
 static inline loff_t *io_kiocb_ppos(struct kiocb *kiocb)
 {
        return (kiocb->ki_filp->f_mode & FMODE_STREAM) ? NULL : &kiocb->ki_pos;
@@ -3331,7 +3319,7 @@ static inline int io_rw_prep_async(struct io_kiocb *req, int rw)
        struct iovec *iov = iorw->fast_iov;
        ssize_t ret;
 
-       ret = __io_import_iovec(rw, req, &iov, &iorw->iter, false);
+       ret = io_import_iovec(rw, req, &iov, &iorw->iter, false);
        if (unlikely(ret < 0))
                return ret;
 
@@ -3466,12 +3454,14 @@ static int io_read(struct io_kiocb *req, bool force_nonblock,
        ssize_t io_size, ret, ret2;
        bool no_async;
 
-       if (rw)
+       if (rw) {
                iter = &rw->iter;
-
-       ret = io_import_iovec(READ, req, &iovec, iter, !force_nonblock);
-       if (ret < 0)
-               return ret;
+               iovec = NULL;
+       } else {
+               ret = io_import_iovec(READ, req, &iovec, iter, !force_nonblock);
+               if (ret < 0)
+                       return ret;
+       }
        io_size = iov_iter_count(iter);
        req->result = io_size;
        ret = 0;
@@ -3592,12 +3582,14 @@ static int io_write(struct io_kiocb *req, bool force_nonblock,
        struct io_async_rw *rw = req->async_data;
        ssize_t ret, ret2, io_size;
 
-       if (rw)
+       if (rw) {
                iter = &rw->iter;
-
-       ret = io_import_iovec(WRITE, req, &iovec, iter, !force_nonblock);
-       if (ret < 0)
-               return ret;
+               iovec = NULL;
+       } else {
+               ret = io_import_iovec(WRITE, req, &iovec, iter, !force_nonblock);
+               if (ret < 0)
+                       return ret;
+       }
        io_size = iov_iter_count(iter);
        req->result = io_size;