On Fri, Jan 18, 2019 at 5:15 PM Jann Horn [off-list ref] wrote:

Multiple filesystems can already return EFSCORRUPTED errors to userspace;
however, so far, definitions of EFSCORRUPTED were in filesystem-private
headers.

I wanted to use EUCLEAN to indicate data corruption in the VFS layer;
Dave Chinner says that I should instead hoist the definitions of
EFSCORRUPTED into the UAPI header and then use EFSCORRUPTED.

This patch is marked for stable backport because it is a prerequisite for
the following patch.

Cc: stable@vger.kernel.org
Suggested-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Jann Horn <jannh@google.com>
---
 fs/ext2/ext2.h                   | 1 -
 fs/ext4/ext4.h                   | 1 -
 fs/xfs/xfs_linux.h               | 1 -
 include/linux/jbd2.h             | 1 -
 include/uapi/asm-generic/errno.h | 1 +
 5 files changed, 1 insertion(+), 4 deletions(-)

For asm-generic:

Acked-by: Arnd Bergmann <arnd@arndb.de>