xfs: xfs_iozero can return positive errno

[ Upstream commit cddc116228cb9d51d3224d23ba3e61fbbc3ec3d2 ]

It was missed when we converted everything in XFs to use negative error
numbers, so fix it now. Bug introduced in 3.17 by commit 2451337 ("xfs: global
error sign conversion"), and should go back to stable kernels.

Thanks to Brian Foster for noticing it.

cc: <stable@vger.kernel.org> # 3.17, 3.18, 3.19, 4.0
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index b28f0d680cb5ae548eef6f92da95c697261264a5..ba8b158a618afa5b0075778e8036b2a6827fe02f 100644 (file)
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -127,7 +127,7 @@ xfs_iozero(
                status = 0;
        } while (count);
 
-       return (-status);
+       return status;
 }
 
 /*