longer uses the active and inactive paging queues. Instead, the pmap now maintains an LRU-ordered list of pv entry pages, and pmap_pv_reclaim() uses this list to select pv entries for reclamation. Note: The old pmap_collect() tried to avoid reclaiming mappings for pages that have either a hold_count or a busy field that is non-zero. However, this isn't necessary for correctness, and the locking in pmap_collect() was insufficient to guarantee that such mappings weren't reclaimed. The new pmap_pv_reclaim() doesn't even try. MFC after: 5 weeks |
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.. | ||
acpica | ||
bios | ||
compile | ||
conf | ||
i386 | ||
ibcs2 | ||
include | ||
isa | ||
linux | ||
pci | ||
svr4 | ||
xbox | ||
xen | ||
Makefile |