kib b341cd2da2 Use the VM_ALLOC_INTERRUPT for the page requests when allocating memory
for the bio for swapout write. It allows the page allocator to drain
free page list deeper. As result, a deadlock where pageout deamon sleeps
waiting for bio to be allocated for swapout is no more reproducable in
practice.

Alan said that M_USE_RESERVE shall be ressurrected and used there, but
until this is implemented, M_NOWAIT does exactly what is needed.

Tested by:	pho, kris
Reviewed by:	alc
No objections from:	phk
MFC after:	2 weeks (RELENG_7 only)
2008-07-11 11:27:42 +00:00
..
2005-12-30 11:45:07 +00:00
2007-10-16 11:32:57 +00:00
2007-12-27 17:08:11 +00:00