From 463d046e04b89439bd1059442ace918f45cc5e6d Mon Sep 17 00:00:00 2001
From: Anders Roxell <anders.roxell@linaro.org>
Date: Tue, 3 Dec 2019 00:36:04 +0100
Subject: io_uring: fix build error, implicit declaration

When building io_uring.c we see the following build error:

../fs/io_uring.c: In function 'loop_rw_iter':
../fs/io_uring.c:1628:21: error: implicit declaration of function 'kmap'; did you mean 'vmap'? [-Werror=implicit-function-declaration]
    iovec.iov_base = kmap(iter->bvec->bv_page)
                     ^~~~
                     vmap
../fs/io_uring.c:1628:19: warning: assignment to 'void *' from 'size_t' {aka 'long unsigned int'} makes pointer from integer without a cast [-Wint-conversion]
    iovec.iov_base = kmap(iter->bvec->bv_page)
                   ^
../fs/io_uring.c:1643:4: error: implicit declaration of function 'kunmap'; did you mean 'vunmap'? [-Werror=implicit-function-declaration]
    kunmap(iter->bvec->bv_page);
    ^~~~~~
    vunmap

Rework the to include linux/highmem.h.

Fixes: 311ae9e159d8 ("io_uring: fix dead-hung for non-iter fixed rw")
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
---
 fs/io_uring.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 2c2e8c25da01..659b7ff6d44c 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -51,6 +51,7 @@
 #include <linux/fs.h>
 #include <linux/file.h>
 #include <linux/fdtable.h>
+#include <linux/highmem.h>
 #include <linux/mm.h>
 #include <linux/mman.h>
 #include <linux/mmu_context.h>
-- 
cgit v1.2.3