• Jens Axboe's avatar
    [BLOCK] Don't pin lots of memory in mempools · 5972511b
    Jens Axboe authored
    Currently we scale the mempool sizes depending on memory installed
    in the machine, except for the bio pool itself which sits at a fixed
    256 entry pre-allocation.
    
    There's really no point in "optimizing" this OOM path, we just need
    enough preallocated to make progress. A single unit is enough, lets
    scale it down to 2 just to be on the safe side.
    
    This patch saves ~150kb of pinned kernel memory on a 32-bit box.
    Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
    5972511b
dm.c 31.4 KB