If we are using deferred struct page initialization feature, most of "struct page"es are getting initialized after other CPUs are started, and hence we are benefiting from doing this job in parallel. However, we are still zeroing all the memory that is allocated for "struct pages" using the boot CPU. This patch solves this problem, by deferring zeroing "struct pages" to only when they are initialized on s390 platforms. Signed-off-by: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx> Reviewed-by: Shannon Nelson <shannon.nelson@xxxxxxxxxx> --- arch/s390/mm/vmem.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index 9c75214..ffe9ba1 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -252,7 +252,7 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node) void *new_page; new_page = vmemmap_alloc_block(PMD_SIZE, node, - true); + VMEMMAP_ZERO); if (!new_page) goto out; pmd_val(*pm_dir) = __pa(new_page) | sgt_prot; -- 1.7.1 -- 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>
