On 01/13/2015 01:43 PM, Cyrill Gorcunov wrote: > On Tue, Jan 13, 2015 at 09:14:15PM +0200, Kirill A. Shutemov wrote: >> We're going to account pmd page tables too. Let's rename mm->nr_pgtables >> to something more generic. >> >> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> >> --- a/fs/proc/task_mmu.c >> +++ b/fs/proc/task_mmu.c >> @@ -64,7 +64,7 @@ void task_mem(struct seq_file *m, struct mm_struct *mm) >> data << (PAGE_SHIFT-10), >> mm->stack_vm << (PAGE_SHIFT-10), text, lib, >> (PTRS_PER_PTE * sizeof(pte_t) * >> - atomic_long_read(&mm->nr_ptes)) >> 10, >> + atomic_long_read(&mm->nr_pgtables)) >> 10, > > This implies that (PTRS_PER_PTE * sizeof(pte_t)) = (PTRS_PER_PMD * sizeof(pmd_t)) > which might be true for all archs, right? I wonder if powerpc is OK on this front today. This diagram: http://linux-mm.org/PageTableStructure says that they use a 128-byte "pte" table when mapping 16M pages. I wonder if they bump mm->nr_ptes for these. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>