zfsonlinux/zfs — pull request #1589 by ryao (2013-07-14 18:14:44+00:00)
Title: Linux 3.8 compat: Support CONFIG_UIDGID_STRICT_TYPE_CHECKS

When CONFIG_UIDGID_STRICT_TYPE_CHECKS is enabled uid_t/git_t are
replaced by kuid_t/kgid_t, which are structures instead of integral
types. This cases any code that uses an integral type to fail to build.
The User Namespace functionality introduced in Linux 3.8 requires
CONFIG_UIDGID_STRICT_TYPE_CHECKS, so we could not build against any
kernel that supported it.

We resolve this by converting between the new kuid_t/kgid_t structures
and the original uid_t/gid_t types.

Signed-off-by: Richard Yao

Note: This depends on zfsonlinux/spl#260