The patch titled Subject: hugetlb: rename max_hstate to hugetlb_max_hstate has been removed from the -mm tree. Its filename was hugetlb-rename-max_hstate-to-hugetlb_max_hstate.patch This patch was dropped because an updated version will be merged The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ From: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx> Subject: hugetlb: rename max_hstate to hugetlb_max_hstate This patchset implements a memory controller extension to control HugeTLB allocations. The extension allows to limit the HugeTLB usage per control group and enforces the controller limit during page fault. Since HugeTLB doesn't support page reclaim, enforcing the limit at page fault time implies that, the application will get SIGBUS signal if it tries to access HugeTLB pages beyond its limit. This requires the application to know beforehand how much HugeTLB memory it would require for its use. The goal is to control how many HugeTLB pages a group of tasks can allocate. It can be looked at as an extension of the existing quota interface which limits the number of HugeTLB pages per hugetlbfs superblock. An HPC job scheduler requires jobs to specify their resource requirements in the job file. Once their requirements can be met, job schedulers (such as SLURM) will schedule the job. We need to make sure that the jobs won't consume more resources than requested. If they do we should either error out or kill the application. This patch: Rename max_hstate to hugetlb_max_hstate. We will be using this from other subsystems like memcg in later patches. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Acked-by: Hillf Danton <dhillf@xxxxxxxxx> Acked-by: Michal Hocko <mhocko@xxxxxxx> Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Acked-by: David Rientjes <rientjes@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/hugetlb.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff -puN mm/hugetlb.c~hugetlb-rename-max_hstate-to-hugetlb_max_hstate mm/hugetlb.c --- a/mm/hugetlb.c~hugetlb-rename-max_hstate-to-hugetlb_max_hstate +++ a/mm/hugetlb.c @@ -34,7 +34,7 @@ const unsigned long hugetlb_zero = 0, hu static gfp_t htlb_alloc_mask = GFP_HIGHUSER; unsigned long hugepages_treat_as_movable; -static int max_hstate; +static int hugetlb_max_hstate; unsigned int default_hstate_idx; struct hstate hstates[HUGE_MAX_HSTATE]; @@ -46,7 +46,7 @@ static unsigned long __initdata default_ static unsigned long __initdata default_hstate_size; #define for_each_hstate(h) \ - for ((h) = hstates; (h) < &hstates[max_hstate]; (h)++) + for ((h) = hstates; (h) < &hstates[hugetlb_max_hstate]; (h)++) /* * Protects updates to hugepage_freelists, nr_huge_pages, and free_huge_pages @@ -1897,9 +1897,9 @@ void __init hugetlb_add_hstate(unsigned printk(KERN_WARNING "hugepagesz= specified twice, ignoring\n"); return; } - BUG_ON(max_hstate >= HUGE_MAX_HSTATE); + BUG_ON(hugetlb_max_hstate >= HUGE_MAX_HSTATE); BUG_ON(order == 0); - h = &hstates[max_hstate++]; + h = &hstates[hugetlb_max_hstate++]; h->order = order; h->mask = ~((1ULL << (order + PAGE_SHIFT)) - 1); h->nr_huge_pages = 0; @@ -1920,10 +1920,10 @@ static int __init hugetlb_nrpages_setup( static unsigned long *last_mhp; /* - * !max_hstate means we haven't parsed a hugepagesz= parameter yet, + * !hugetlb_max_hstate means we haven't parsed a hugepagesz= parameter yet, * so this hugepages= parameter goes to the "default hstate". */ - if (!max_hstate) + if (!hugetlb_max_hstate) mhp = &default_hstate_max_huge_pages; else mhp = &parsed_hstate->max_huge_pages; @@ -1942,7 +1942,7 @@ static int __init hugetlb_nrpages_setup( * But we need to allocate >= MAX_ORDER hstates here early to still * use the bootmem allocator. */ - if (max_hstate && parsed_hstate->order >= MAX_ORDER) + if (hugetlb_max_hstate && parsed_hstate->order >= MAX_ORDER) hugetlb_hstate_alloc_pages(parsed_hstate); last_mhp = mhp; _ Patches currently in -mm which might be from aneesh.kumar@xxxxxxxxxxxxxxxxxx are linux-next.patch hugetlbfs-dont-use-err_ptr-with-vm_fault-values.patch hugetlbfs-add-an-inline-helper-for-finding-hstate-index.patch hugetlbfs-add-an-inline-helper-for-finding-hstate-index-fix.patch hugetlb-use-mmu_gather-instead-of-a-temporary-linked-list-for-accumulating-pages.patch hugetlb-use-mmu_gather-instead-of-a-temporary-linked-list-for-accumulating-pages-fix.patch hugetlb-use-mmu_gather-instead-of-a-temporary-linked-list-for-accumulating-pages-fix-fix.patch hugetlb-use-mmu_gather-instead-of-a-temporary-linked-list-for-accumulating-pages-fix-2.patch hugetlb-avoid-taking-i_mmap_mutex-in-unmap_single_vma-for-hugetlb.patch hugetlb-simplify-migrate_huge_page.patch hugetlb-simplify-migrate_huge_page-fix.patch memcg-add-hugetlb-extension.patch memcg-add-hugetlb-extension-fix.patch memcg-add-hugetlb-extension-fix-fix.patch hugetlb-add-charge-uncharge-calls-for-hugetlb-alloc-free.patch memcg-track-resource-index-in-cftype-private.patch hugetlbfs-add-memcg-control-files-for-hugetlbfs.patch hugetlbfs-add-memcg-control-files-for-hugetlbfs-use-scnprintf-instead-of-sprintf.patch hugetlbfs-add-memcg-control-files-for-hugetlbfs-use-scnprintf-instead-of-sprintf-fix.patch hugetlbfs-add-memcg-control-files-for-hugetlbfs-add-failcnt-support-for-hugetlb-extension.patch hugetlbfs-add-a-list-for-tracking-in-use-hugetlb-pages.patch memcg-move-hugetlb-resource-count-to-parent-cgroup-on-memcg-removal.patch memcg-move-hugetlb-resource-count-to-parent-cgroup-on-memcg-removal-fix.patch memcg-move-hugetlb-resource-count-to-parent-cgroup-on-memcg-removal-fix-fix.patch hugetlb-migrate-memcg-info-from-oldpage-to-new-page-during-migration.patch hugetlb-migrate-memcg-info-from-oldpage-to-new-page-during-migration-fix.patch hugetlb-migrate-memcg-info-from-oldpage-to-new-page-during-migration-fix-2.patch memcg-add-memory-controller-documentation-for-hugetlb-management.patch memcg-fix-error-code-in-hugetlb_force_memcg_empty.patch memcg-fix-error-code-in-hugetlb_force_memcg_empty-v2.patch memcg-fix-error-code-in-hugetlb_force_memcg_empty-v2-checkpatch-fixes.patch memcg-use-res_counter_uncharge_until-in-mem_cgroup_move_hugetlb_parent.patch memcg-move-charges-to-root-cgroup-if-use_hierarchy=0-in-mem_cgroup_move_hugetlb_parent.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html