• Andrew Morton's avatar
    [PATCH] use a slab cache for pte_chains · cbb6e8ec
    Andrew Morton authored
    Patch from Bill Irwin.
    
    It removes the custom pte_chain allocator in mm/rmap.c and replaces it
    with a slab cache.
    
    "This patch
     (1) eliminates the pte_chain_freelist_lock and all contention on it
     (2) gives the VM the ability to recover unused pte_chain pages
    
     Anton Blanchard has reported (1) from prior incarnations of this patch.
     Craig Kulesa has reported (2) in combination with slab-on-LRU patches.
    
     I've left OOM detection out of this patch entirely as upcoming patches
     will do real OOM handling for pte_chains and all the code changed anyway."
    cbb6e8ec
main.c 13.5 KB