summaryrefslogtreecommitdiff
path: root/io_uring/rw.c
diff options
context:
space:
mode:
Diffstat (limited to 'io_uring/rw.c')
-rw-r--r--io_uring/rw.c39
1 files changed, 30 insertions, 9 deletions
diff --git a/io_uring/rw.c b/io_uring/rw.c
index b21b423b3cf8..7bc23802a388 100644
--- a/io_uring/rw.c
+++ b/io_uring/rw.c
@@ -357,31 +357,30 @@ int io_prep_writev(struct io_kiocb *req, const struct io_uring_sqe *sqe)
return io_prep_rwv(req, sqe, ITER_SOURCE);
}
-static int io_prep_rw_fixed(struct io_kiocb *req, const struct io_uring_sqe *sqe,
+static int io_init_rw_fixed(struct io_kiocb *req, unsigned int issue_flags,
int ddir)
{
struct io_rw *rw = io_kiocb_to_cmd(req, struct io_rw);
- struct io_async_rw *io;
+ struct io_async_rw *io = req->async_data;
int ret;
- ret = __io_prep_rw(req, sqe, ddir);
- if (unlikely(ret))
- return ret;
+ if (io->bytes_done)
+ return 0;
- io = req->async_data;
- ret = io_import_reg_buf(req, &io->iter, rw->addr, rw->len, ddir, 0);
+ ret = io_import_reg_buf(req, &io->iter, rw->addr, rw->len, ddir,
+ issue_flags);
iov_iter_save_state(&io->iter, &io->iter_state);
return ret;
}
int io_prep_read_fixed(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
- return io_prep_rw_fixed(req, sqe, ITER_DEST);
+ return __io_prep_rw(req, sqe, ITER_DEST);
}
int io_prep_write_fixed(struct io_kiocb *req, const struct io_uring_sqe *sqe)
{
- return io_prep_rw_fixed(req, sqe, ITER_SOURCE);
+ return __io_prep_rw(req, sqe, ITER_SOURCE);
}
/*
@@ -1147,6 +1146,28 @@ ret_eagain:
}
}
+int io_read_fixed(struct io_kiocb *req, unsigned int issue_flags)
+{
+ int ret;
+
+ ret = io_init_rw_fixed(req, issue_flags, ITER_DEST);
+ if (unlikely(ret))
+ return ret;
+
+ return io_read(req, issue_flags);
+}
+
+int io_write_fixed(struct io_kiocb *req, unsigned int issue_flags)
+{
+ int ret;
+
+ ret = io_init_rw_fixed(req, issue_flags, ITER_SOURCE);
+ if (unlikely(ret))
+ return ret;
+
+ return io_write(req, issue_flags);
+}
+
void io_rw_fail(struct io_kiocb *req)
{
int res;