> How about add some comment, if mirrored memroy is too small, then the > normal zone is small, so it may be oom. > The mirrored memory is at least 1/64 of whole memory, because struct > pages usually take 64 bytes per page.
1/64th is the absolute lower bound (for the page structures as you say). I expect people will need to configure 10% or more to run any real workloads. I made the memblock boot time allocator fall back to non-mirrored memory if mirrored memory ran out. What happens in the run time allocator if the non-movable zones run out of pages? Will we allocate kernel pages from movable memory? -Tony -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
