On Thu 29-11-12 22:23:56, Wu Fengguang wrote:

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/mhocko/mm.git since-3.6
head:   8695b9105cdb22a5a4b66eea52c0232cbd5e6e48
commit: b86ed88f692e53331ef7d6b6b753993df75fc59a [480/499] Reverted "mm, highmem: makes flush_all_zero_pkmaps() return index of last flushed entry"
config: i386-randconfig-b780 (attached as .config)

All error/warnings:

mm/highmem.c: In function 'kmap_flush_unused':
mm/highmem.c:157:8: error: void value not ignored as it ought to be
mm/highmem.c:158:15: error: 'PKMAP_INVALID_INDEX' undeclared (first use in this function)
mm/highmem.c:158:15: note: each undeclared identifier is reported only once for each function it appears in

Dohh, I have screwed revert of "mm, highmem: makes
flush_all_zero_pkmaps() return index of last flushed entry"

Thanks a lot for the report

The patch bellow should heal this.
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