Re: [PATCH 2/3] mm: add mm_pxd_folded checks to pgtable_bytes accounting functions

2018-10-31 Thread Kirill A. Shutemov
On Mon, Oct 15, 2018 at 06:42:38PM +0200, Martin Schwidefsky wrote: > The common mm code calls mm_dec_nr_pmds() and mm_dec_nr_puds() > in free_pgtables() if the address range spans a full pud or pmd. > If mm_dec_nr_puds/mm_dec_nr_pmds are non-empty due to configuration > settings they blindly

Re: [PATCH 2/3] mm: add mm_pxd_folded checks to pgtable_bytes accounting functions

2018-10-31 Thread Kirill A. Shutemov
On Mon, Oct 15, 2018 at 06:42:38PM +0200, Martin Schwidefsky wrote: > The common mm code calls mm_dec_nr_pmds() and mm_dec_nr_puds() > in free_pgtables() if the address range spans a full pud or pmd. > If mm_dec_nr_puds/mm_dec_nr_pmds are non-empty due to configuration > settings they blindly

[PATCH 2/3] mm: add mm_pxd_folded checks to pgtable_bytes accounting functions

2018-10-15 Thread Martin Schwidefsky
The common mm code calls mm_dec_nr_pmds() and mm_dec_nr_puds() in free_pgtables() if the address range spans a full pud or pmd. If mm_dec_nr_puds/mm_dec_nr_pmds are non-empty due to configuration settings they blindly subtract the size of the pmd or pud table from pgtable_bytes even if the pud or

[PATCH 2/3] mm: add mm_pxd_folded checks to pgtable_bytes accounting functions

2018-10-15 Thread Martin Schwidefsky
The common mm code calls mm_dec_nr_pmds() and mm_dec_nr_puds() in free_pgtables() if the address range spans a full pud or pmd. If mm_dec_nr_puds/mm_dec_nr_pmds are non-empty due to configuration settings they blindly subtract the size of the pmd or pud table from pgtable_bytes even if the pud or