On Tue, 2017-05-02 at 05:17:04 UTC, Balbir Singh wrote: > Introduce a helper pgtable_gfp_flags() which > just returns the current gfp flags and adds > __GFP_ACCOUNT to account for page table allocation. > The generic helper is added to include/asm/pgalloc.h > and has two variants - WARNING ugly bits ahead > > 1. If the header is included from a module, no check > for mm == &init_mm is done, since init_mm is not > exported > 2. For kernel includes, the check is done and required > see (3e79ec7 arch: x86: charge page tables to kmemcg) > > The fundamental assumption is that no module should be > doing pgd/pud/pmd and pte alloc's on behalf of init_mm > directly. > > NOTE: This adds an overhead to pmd/pud/pgd allocations > similar to x86. The other alternative was to implement > pmd_alloc_kernel/pud_alloc_kernel and pgd_alloc_kernel > with their offset variants. > > For 4k page size, pte_alloc_one no longer calls > pte_alloc_one_kernel. > > Signed-off-by: Balbir Singh <bsingharora@xxxxxxxxx> Series applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/de3b87611dd1f3c00f4e42fe298457 cheers -- 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>
