On Wed, 2009-12-16 at 23:07 +0000, Al Viro wrote:
> Hrm...  What about your CONFIG_TMPFS_POSIX_ACL?

That is off:
chainsaw@prometheus /cvs/linux-2.6 $ zgrep -i tmpfs /proc/config.gz 
# CONFIG_DEVTMPFS is not set
CONFIG_TMPFS=y
# CONFIG_TMPFS_POSIX_ACL is not set

>  And see if the breakage
> starts at 1c7c474c31aea6d5cb2fb35f31d9e9e91ae466b1 (make generic_acl slightly
> more generic).

Do you want me to revert 1c7c474c31aea6d5cb2fb35f31d9e9e91ae466b1
locally or try linux-2.6 old enough not to have this?

Regards,
Tony V.