Andrea Arcangeli ba6f0ff398 ksm: fix ksm swapin time optimization ... The new anon-vma code, was suboptimal and it lead to erratic invocation of ksm_does_need_to_copy. That leads to host hangs or guest vnc lockup, or weird behavior. It's unclear why ksm_does_need_to_copy is unstable but the point is that when KSM is not in use, ksm_does_need_to_copy must never run or we bounce pages for no good reason. I suspect the same hangs will happen with KVM swaps. But this at least fixes the regression in the new-anon-vma code and it only let KSM bugs triggers when KSM is in use. The code in do_swap_page likely doesn't cope well with a not-swapcache, especially the memcg code. Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Rik van Riel <riel@redhat.com> Cc: Izik Eidus <ieidus@yahoo.com> Cc: Avi Kivity <avi@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2010-08-09 20:44:58 -07:00
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acpi
asm-generic	topology: alternate fix for ia64 tiger_defconfig build breakage	2010-08-09 20:44:57 -07:00
crypto
drm
keys
linux	ksm: fix ksm swapin time optimization	2010-08-09 20:44:58 -07:00
math-emu
media
mtd
net
pcmcia
rdma
rxrpc
scsi
sound
trace
video
xen
Kbuild