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android_kernel_oneplus_msm8998/fs/overlayfs
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Vivek Goyal 7eaa995c75 ovl: warn instead of error if d_type is not supported 
commit e7c0b5991dd1be7b6f6dc2b54a15a0f47b64b007 upstream.

overlay needs underlying fs to support d_type. Recently I put in a
patch in to detect this condition and started failing mount if
underlying fs did not support d_type.

But this breaks existing configurations over kernel upgrade. Those who
are running docker (partially broken configuration) with xfs not
supporting d_type, are surprised that after kernel upgrade docker does
not run anymore.

https://github.com/docker/docker/issues/22937#issuecomment-229881315

So instead of erroring out, detect broken configuration and warn
about it. This should allow existing docker setups to continue
working after kernel upgrade.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Fixes: 45aebeaf4f67 ("ovl: Ensure upper filesystem supports d_type")
Cc: <stable@vger.kernel.org> 4.6
Signed-off-by: SZ Lin (林上智) <sz.lin@moxa.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-28 07:23:43 +02:00
..
copy_up.c ovl: fsync after copy-up 2016-11-10 16:36:34 +01:00
dir.c ovl: Fix info leak in ovl_lookup_temp() 2016-10-28 03:01:30 -04:00
inode.c ovl: filter trusted xattr for non-admin 2018-04-13 19:50:14 +02:00
Kconfig ovl: rename filesystem type to "overlay" 2014-11-20 16:39:59 +01:00
Makefile ovl: rename filesystem type to "overlay" 2014-11-20 16:39:59 +01:00
overlayfs.h ovl: Ensure upper filesystem supports d_type 2018-08-28 07:23:43 +02:00
readdir.c ovl: Ensure upper filesystem supports d_type 2018-08-28 07:23:43 +02:00
super.c ovl: warn instead of error if d_type is not supported 2018-08-28 07:23:43 +02:00