• Hanna V. Linder's avatar
    [PATCH] FastWalk Dcache · 898683e9
    Hanna V. Linder authored
    Reduce cacheline bouncing when a dentry is in the cache.
    
    Specifically, the d_count reference counter is not incremented and
    decremented for every dentry in a path during path walking if the dentry
    is in the dcache.  Execcisve atomic inc/dec's are expensive on SMP
    systems due to the cachline bouncing.
    898683e9
namei.c 49.8 KB