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    slab/slub: consider a memcg parameter in kmem_create_cache · 2633d7a0
    Glauber Costa authored
    Allow a memcg parameter to be passed during cache creation.  When the slub
    allocator is being used, it will only merge caches that belong to the same
    memcg.  We'll do this by scanning the global list, and then translating
    the cache to a memcg-specific cache
    Default function is created as a wrapper, passing NULL to the memcg
    version.  We only merge caches that belong to the same memcg.
    A helper is provided, memcg_css_id: because slub needs a unique cache name
    for sysfs.  Since this is visible, but not the canonical location for slab
    data, the cache name is not used, the css_id should suffice.
    Signed-off-by: default avatarGlauber Costa <>
    Cc: Christoph Lameter <>
    Cc: David Rientjes <>
    Cc: Frederic Weisbecker <>
    Cc: Greg Thelen <>
    Cc: Johannes Weiner <>
    Cc: JoonSoo Kim <>
    Cc: KAMEZAWA Hiroyuki <>
    Cc: Mel Gorman <>
    Cc: Michal Hocko <>
    Cc: Pekka Enberg <>
    Cc: Rik van Riel <>
    Cc: Suleiman Souhlal <>
    Cc: Tejun Heo <>
    Signed-off-by: default avatarAndrew Morton <>
    Signed-off-by: default avatarLinus Torvalds <>