From: Josef Bacik <josef@toxicpanda.com>
Date: Fri, 29 Sep 2017 19:24:06 +0000 (-0400)
Subject: fs: make fiemap work from compat_ioctl
X-Git-Tag: rel_imx_4.19.35_1.1.0~11248^2~3
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=ceac204e1da942a634d3bb0db3e959edc78e47c7;p=linux.git

fs: make fiemap work from compat_ioctl

We don't need to do anything special with fiemap to make it work with a
64bit kernel from 32bit userspace, so just go down to do_vfs_ioctl().
Without this patch we were incorrectly failing to do fiemap with a 32bit
userspace on a 64bit kernel.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index d27b326d96f4..480f9366b4e3 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1579,6 +1579,7 @@ COMPAT_SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd,
 	case FICLONE:
 	case FICLONERANGE:
 	case FIDEDUPERANGE:
+	case FS_IOC_FIEMAP:
 		goto do_ioctl;
 
 	case FIBMAP: