[Question] detach_vmas_to_be_unmapped
Hello, I am a bit confused on why the vm start and end address where swapped in arch_unmap_area and arch_unmap_area_topdown functions after the official Avoiding mmap fragmentation ( 1363c3cd8603a913a27e2995dccbd70d5312d8e6 ) patch. Prior to this patch arch_unmap_area() used area->vm_start and arch_unmap_area_topdown used area->vm_end after the patch the following change showed up. if (mm->unmap_area == arch_unmap_area) addr = prev ? prev->vm_start : mm->mmap_base; else addr = vma ? vma->vm_end : mm->mmap_base; Using Wolfgang Wander's leakme.c test, I get the same results seen with his original "Avoiding mmap fragmentation" patch as I do after swapping the start & end address in the above code segment. Is it just a typo in the official patch or am I missing the much bigger picture? Note: I have only run this on an Pentium4 with 1GiG memory. TIA Armin - 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/
[Question] detach_vmas_to_be_unmapped
Hello, I am a bit confused on why the vm start and end address where swapped in arch_unmap_area and arch_unmap_area_topdown functions after the official Avoiding mmap fragmentation ( 1363c3cd8603a913a27e2995dccbd70d5312d8e6 ) patch. Prior to this patch arch_unmap_area() used area-vm_start and arch_unmap_area_topdown used area-vm_end after the patch the following change showed up. if (mm-unmap_area == arch_unmap_area) addr = prev ? prev-vm_start : mm-mmap_base; else addr = vma ? vma-vm_end : mm-mmap_base; Using Wolfgang Wander's leakme.c test, I get the same results seen with his original Avoiding mmap fragmentation patch as I do after swapping the start end address in the above code segment. Is it just a typo in the official patch or am I missing the much bigger picture? Note: I have only run this on an Pentium4 with 1GiG memory. TIA Armin - 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/
