On Wed, 19 Nov 2014 08:21:39 +0900 Minchan Kim <[email protected]> wrote:
> Main reason I sent the patch is I got a subtle bug when I implement > new feature of zsmalloc(ie, compaction) due to link's mishandling > (ie, link was over page boundary by my fault). > Although it was totally my mistake, it took time for a while > to find a root cause because unpredictable kmapped address should > be unmapped so it's almost random crash. Fair enough. That's pretty rude behaviour from kunmap_atomic(). Unfortunately it just doesn't have anything with which to check the address - we'd need to create a special per-cpu array[KM_TYPE_NR] just for the purpose. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
