Revert "ARM: 7946/1: asm: __und_usr_thumb need byteswap instructions in BE case"

This reverts commit ce75ccba8eab70fdf97d3bbe69ddeb8fe0b7004c.
Revert "kernel.h: define u8, s8, u32, etc. limits"

This reverts commit 3144aa1ee7542d501f47f0b09e493dda3a083496.
Revert "mm/rmap: use rmap_walk() in page_referenced()"

This reverts commit b761be4aab6a90c1c463295842b256f95e4c06e9.

Conflicts:
	mm/ksm.c
Revert "mm/rmap: use rmap_walk() in try_to_unmap()"

This reverts commit 6c151dd7ea1bef7a8a48b99931286a84a2fc9362.

Conflicts:
	mm/ksm.c
	mm/rmap.c
Revert "mm/rmap: extend rmap_walk_xxx() to cope with different cases"

This reverts commit 3eeedb7a281154234dac74033d0d552174edca54.

Conflicts:
	mm/rmap.c