mconsole: switch to kernel_read

Instead of playing with address limits.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 6 deletions

diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index af326fb6510d..c4d162a94be9 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -148,12 +148,7 @@ void mconsole_proc(struct mc_request *req)
         }
 
         do {
-                loff_t pos = file->f_pos;
-                mm_segment_t old_fs = get_fs();
-                set_fs(KERNEL_DS);
-                len = vfs_read(file, buf, PAGE_SIZE - 1, &pos);
-                set_fs(old_fs);
-                file->f_pos = pos;
+                len = kernel_read(file, buf, PAGE_SIZE - 1, &file->f_pos);
                 if (len < 0) {
                         mconsole_reply(req, "Read of file failed", 1, 0);
                         goto out_free;