diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 52 | ||||
| -rw-r--r-- | mm/oom_kill.c | 38 | ||||
| -rw-r--r-- | mm/rmap.c | 20 | ||||
| -rw-r--r-- | mm/swapfile.c | 9 | ||||
| -rw-r--r-- | mm/vmscan.c | 12 |
5 files changed, 67 insertions, 64 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index abb66a2cba65..aeb23933a052 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2844,12 +2844,12 @@ int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, */ int mem_cgroup_try_charge_swapin(struct mm_struct *mm, struct page *page, - gfp_t mask, struct mem_cgroup **ptr) + gfp_t mask, struct mem_cgroup **memcgp) { struct mem_cgroup *memcg; int ret; - *ptr = NULL; + *memcgp = NULL; if (mem_cgroup_disabled()) return 0; @@ -2867,27 +2867,27 @@ int mem_cgroup_try_charge_swapin(struct mm_struct *mm, memcg = try_get_mem_cgroup_from_page(page); if (!memcg) goto charge_cur_mm; - *ptr = memcg; - ret = __mem_cgroup_try_charge(NULL, mask, 1, ptr, true); + *memcgp = memcg; + ret = __mem_cgroup_try_charge(NULL, mask, 1, memcgp, true); css_put(&memcg->css); return ret; charge_cur_mm: if (unlikely(!mm)) mm = &init_mm; - return __mem_cgroup_try_charge(mm, mask, 1, ptr, true); + return __mem_cgroup_try_charge(mm, mask, 1, memcgp, true); } static void -__mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *ptr, +__mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *memcg, enum charge_type ctype) { if (mem_cgroup_disabled()) return; - if (!ptr) + if (!memcg) return; - cgroup_exclude_rmdir(&ptr->css); + cgroup_exclude_rmdir(&memcg->css); - __mem_cgroup_commit_charge_lrucare(page, ptr, ctype); + __mem_cgroup_commit_charge_lrucare(page, memcg, ctype); /* * Now swap is on-memory. This means this page may be * counted both as mem and swap....double count. @@ -2897,21 +2897,22 @@ __mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *ptr, */ if (do_swap_account && PageSwapCache(page)) { swp_entry_t ent = {.val = page_private(page)}; + struct mem_cgroup *swap_memcg; unsigned short id; - struct mem_cgroup *memcg; id = swap_cgroup_record(ent, 0); rcu_read_lock(); - memcg = mem_cgroup_lookup(id); - if (memcg) { + swap_memcg = mem_cgroup_lookup(id); + if (swap_memcg) { /* * This recorded memcg can be obsolete one. So, avoid * calling css_tryget */ - if (!mem_cgroup_is_root(memcg)) - res_counter_uncharge(&memcg->memsw, PAGE_SIZE); - mem_cgroup_swap_statistics(memcg, false); - mem_cgroup_put(memcg); + if (!mem_cgroup_is_root(swap_memcg)) + res_counter_uncharge(&swap_memcg->memsw, + PAGE_SIZE); + mem_cgroup_swap_statistics(swap_memcg, false); + mem_cgroup_put(swap_memcg); } rcu_read_unlock(); } @@ -2920,13 +2921,14 @@ __mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *ptr, * So, rmdir()->pre_destroy() can be called while we do this charge. * In that case, we need to call pre_destroy() again. check it here. */ - cgroup_release_and_wakeup_rmdir(&ptr->css); + cgroup_release_and_wakeup_rmdir(&memcg->css); } -void mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *ptr) +void mem_cgroup_commit_charge_swapin(struct page *page, + struct mem_cgroup *memcg) { - __mem_cgroup_commit_charge_swapin(page, ptr, - MEM_CGROUP_CHARGE_TYPE_MAPPED); + __mem_cgroup_commit_charge_swapin(page, memcg, + MEM_CGROUP_CHARGE_TYPE_MAPPED); } void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *memcg) @@ -3255,14 +3257,14 @@ static inline int mem_cgroup_move_swap_account(swp_entry_t entry, * page belongs to. */ int mem_cgroup_prepare_migration(struct page *page, - struct page *newpage, struct mem_cgroup **ptr, gfp_t gfp_mask) + struct page *newpage, struct mem_cgroup **memcgp, gfp_t gfp_mask) { struct mem_cgroup *memcg = NULL; struct page_cgroup *pc; enum charge_type ctype; int ret = 0; - *ptr = NULL; + *memcgp = NULL; VM_BUG_ON(PageTransHuge(page)); if (mem_cgroup_disabled()) @@ -3313,10 +3315,10 @@ int mem_cgroup_prepare_migration(struct page *page, if (!memcg) return 0; - *ptr = memcg; - ret = __mem_cgroup_try_charge(NULL, gfp_mask, 1, ptr, false); + *memcgp = memcg; + ret = __mem_cgroup_try_charge(NULL, gfp_mask, 1, memcgp, false); css_put(&memcg->css);/* drop extra refcnt */ - if (ret || *ptr == NULL) { + if (ret || *memcgp == NULL) { if (PageAnon(page)) { lock_page_cgroup(pc); ClearPageCgroupMigration(pc); diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 05c0f27d4ed1..2958fd8e7c9a 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -152,7 +152,7 @@ struct task_struct *find_lock_task_mm(struct task_struct *p) /* return true if the task is not adequate as candidate victim task. */ static bool oom_unkillable_task(struct task_struct *p, - const struct mem_cgroup *mem, const nodemask_t *nodemask) + const struct mem_cgroup *memcg, const nodemask_t *nodemask) { if (is_global_init(p)) return true; @@ -160,7 +160,7 @@ static bool oom_unkillable_task(struct task_struct *p, return true; /* When mem_cgroup_out_of_memory() and p is not member of the group */ - if (mem && !task_in_mem_cgroup(p, mem)) + if (memcg && !task_in_mem_cgroup(p, memcg)) return true; /* p may not have freeable memory in nodemask */ @@ -179,12 +179,12 @@ static bool oom_unkillable_task(struct task_struct *p, * predictable as possible. The goal is to return the highest value for the * task consuming the most memory to avoid subsequent oom failures. */ -unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *mem, +unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *memcg, const nodemask_t *nodemask, unsigned long totalpages) { long points; - if (oom_unkillable_task(p, mem, nodemask)) + if (oom_unkillable_task(p, memcg, nodemask)) return 0; p = find_lock_task_mm(p); @@ -308,7 +308,7 @@ static enum oom_constraint constrained_alloc(struct zonelist *zonelist, * (not docbooked, we don't want this one cluttering up the manual) */ static struct task_struct *select_bad_process(unsigned int *ppoints, - unsigned long totalpages, struct mem_cgroup *mem, + unsigned long totalpages, struct mem_cgroup *memcg, const nodemask_t *nodemask) { struct task_struct *g, *p; @@ -320,7 +320,7 @@ static struct task_struct *select_bad_process(unsigned int *ppoints, if (p->exit_state) continue; - if (oom_unkillable_task(p, mem, nodemask)) + if (oom_unkillable_task(p, memcg, nodemask)) continue; /* @@ -364,7 +364,7 @@ static struct task_struct *select_bad_process(unsigned int *ppoints, } } - points = oom_badness(p, mem, nodemask, totalpages); + points = oom_badness(p, memcg, nodemask, totalpages); if (points > *ppoints) { chosen = p; *ppoints = points; @@ -387,14 +387,14 @@ static struct task_struct *select_bad_process(unsigned int *ppoints, * * Call with tasklist_lock read-locked. */ -static void dump_tasks(const struct mem_cgroup *mem, const nodemask_t *nodemask) +static void dump_tasks(const struct mem_cgroup *memcg, const nodemask_t *nodemask) { struct task_struct *p; struct task_struct *task; pr_info("[ pid ] uid tgid total_vm rss cpu oom_adj oom_score_adj name\n"); for_each_process(p) { - if (oom_unkillable_task(p, mem, nodemask)) + if (oom_unkillable_task(p, memcg, nodemask)) continue; task = find_lock_task_mm(p); @@ -417,7 +417,7 @@ static void dump_tasks(const struct mem_cgroup *mem, const nodemask_t *nodemask) } static void dump_header(struct task_struct *p, gfp_t gfp_mask, int order, - struct mem_cgroup *mem, const nodemask_t *nodemask) + struct mem_cgroup *memcg, const nodemask_t *nodemask) { task_lock(current); pr_warning("%s invoked oom-killer: gfp_mask=0x%x, order=%d, " @@ -427,10 +427,10 @@ static void dump_header(struct task_struct *p, gfp_t gfp_mask, int order, cpuset_print_task_mems_allowed(current); task_unlock(current); dump_stack(); - mem_cgroup_print_oom_info(mem, p); + mem_cgroup_print_oom_info(memcg, p); show_mem(SHOW_MEM_FILTER_NODES); if (sysctl_oom_dump_tasks) - dump_tasks(mem, nodemask); + dump_tasks(memcg, nodemask); } #define K(x) ((x) << (PAGE_SHIFT-10)) @@ -484,7 +484,7 @@ static int oom_kill_task(struct task_struct *p) static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order, unsigned int points, unsigned long totalpages, - struct mem_cgroup *mem, nodemask_t *nodemask, + struct mem_cgroup *memcg, nodemask_t *nodemask, const char *message) { struct task_struct *victim = p; @@ -493,7 +493,7 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order, unsigned int victim_points = 0; if (printk_ratelimit()) - dump_header(p, gfp_mask, order, mem, nodemask); + dump_header(p, gfp_mask, order, memcg, nodemask); /* * If the task is already exiting, don't alarm the sysadmin or kill @@ -524,7 +524,7 @@ static int oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order, /* * oom_badness() returns 0 if the thread is unkillable */ - child_points = oom_badness(child, mem, nodemask, + child_points = oom_badness(child, memcg, nodemask, totalpages); if (child_points > victim_points) { victim = child; @@ -561,7 +561,7 @@ static void check_panic_on_oom(enum oom_constraint constraint, gfp_t gfp_mask, } #ifdef CONFIG_CGROUP_MEM_RES_CTLR -void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask) +void mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask) { unsigned long limit; unsigned int points = 0; @@ -578,14 +578,14 @@ void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask) } check_panic_on_oom(CONSTRAINT_MEMCG, gfp_mask, 0, NULL); - limit = mem_cgroup_get_limit(mem) >> PAGE_SHIFT; + limit = mem_cgroup_get_limit(memcg) >> PAGE_SHIFT; read_lock(&tasklist_lock); retry: - p = select_bad_process(&points, limit, mem, NULL); + p = select_bad_process(&points, limit, memcg, NULL); if (!p || PTR_ERR(p) == -1UL) goto out; - if (oom_kill_process(p, gfp_mask, 0, points, limit, mem, NULL, + if (oom_kill_process(p, gfp_mask, 0, points, limit, memcg, NULL, "Memory cgroup out of memory")) goto retry; out: diff --git a/mm/rmap.c b/mm/rmap.c index a2e5ce1fa081..c8454e06b6c8 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -773,7 +773,7 @@ out: } static int page_referenced_anon(struct page *page, - struct mem_cgroup *mem_cont, + struct mem_cgroup *memcg, unsigned long *vm_flags) { unsigned int mapcount; @@ -796,7 +796,7 @@ static int page_referenced_anon(struct page *page, * counting on behalf of references from different * cgroups */ - if (mem_cont && !mm_match_cgroup(vma->vm_mm, mem_cont)) + if (memcg && !mm_match_cgroup(vma->vm_mm, memcg)) continue; referenced += page_referenced_one(page, vma, address, &mapcount, vm_flags); @@ -811,7 +811,7 @@ static int page_referenced_anon(struct page *page, /** * page_referenced_file - referenced check for object-based rmap * @page: the page we're checking references on. - * @mem_cont: target memory controller + * @memcg: target memory control group * @vm_flags: collect encountered vma->vm_flags who actually referenced the page * * For an object-based mapped page, find all the places it is mapped and @@ -822,7 +822,7 @@ static int page_referenced_anon(struct page *page, * This function is only called from page_referenced for object-based pages. */ static int page_referenced_file(struct page *page, - struct mem_cgroup *mem_cont, + struct mem_cgroup *memcg, unsigned long *vm_flags) { unsigned int mapcount; @@ -864,7 +864,7 @@ static int page_referenced_file(struct page *page, * counting on behalf of references from different * cgroups */ - if (mem_cont && !mm_match_cgroup(vma->vm_mm, mem_cont)) + if (memcg && !mm_match_cgroup(vma->vm_mm, memcg)) continue; referenced += page_referenced_one(page, vma, address, &mapcount, vm_flags); @@ -880,7 +880,7 @@ static int page_referenced_file(struct page *page, * page_referenced - test if the page was referenced * @page: the page to test * @is_locked: caller holds lock on the page - * @mem_cont: target memory controller + * @memcg: target memory cgroup * @vm_flags: collect encountered vma->vm_flags who actually referenced the page * * Quick test_and_clear_referenced for all mappings to a page, @@ -888,7 +888,7 @@ static int page_referenced_file(struct page *page, */ int page_referenced(struct page *page, int is_locked, - struct mem_cgroup *mem_cont, + struct mem_cgroup *memcg, unsigned long *vm_flags) { int referenced = 0; @@ -904,13 +904,13 @@ int page_referenced(struct page *page, } } if (unlikely(PageKsm(page))) - referenced += page_referenced_ksm(page, mem_cont, + referenced += page_referenced_ksm(page, memcg, vm_flags); else if (PageAnon(page)) - referenced += page_referenced_anon(page, mem_cont, + referenced += page_referenced_anon(page, memcg, vm_flags); else if (page->mapping) - referenced += page_referenced_file(page, mem_cont, + referenced += page_referenced_file(page, memcg, vm_flags); if (we_locked) unlock_page(page); diff --git a/mm/swapfile.c b/mm/swapfile.c index 9520592d4231..d999f090dfda 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -847,12 +847,13 @@ unsigned int count_swap_pages(int type, int free) static int unuse_pte(struct vm_area_struct *vma, pmd_t *pmd, unsigned long addr, swp_entry_t entry, struct page *page) { - struct mem_cgroup *ptr; + struct mem_cgroup *memcg; spinlock_t *ptl; pte_t *pte; int ret = 1; - if (mem_cgroup_try_charge_swapin(vma->vm_mm, page, GFP_KERNEL, &ptr)) { + if (mem_cgroup_try_charge_swapin(vma->vm_mm, page, + GFP_KERNEL, &memcg)) { ret = -ENOMEM; goto out_nolock; } @@ -860,7 +861,7 @@ static int unuse_pte(struct vm_area_struct *vma, pmd_t *pmd, pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl); if (unlikely(!pte_same(*pte, swp_entry_to_pte(entry)))) { if (ret > 0) - mem_cgroup_cancel_charge_swapin(ptr); + mem_cgroup_cancel_charge_swapin(memcg); ret = 0; goto out; } @@ -871,7 +872,7 @@ static int unuse_pte(struct vm_area_struct *vma, pmd_t *pmd, set_pte_at(vma->vm_mm, addr, pte, pte_mkold(mk_pte(page, vma->vm_page_prot))); page_add_anon_rmap(page, vma, addr); - mem_cgroup_commit_charge_swapin(page, ptr); + mem_cgroup_commit_charge_swapin(page, memcg); swap_free(entry); /* * Move the page to the active list so it is not diff --git a/mm/vmscan.c b/mm/vmscan.c index 813aae820a27..e16ca8384ef7 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2376,7 +2376,7 @@ unsigned long try_to_free_pages(struct zonelist *zonelist, int order, #ifdef CONFIG_CGROUP_MEM_RES_CTLR -unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem, +unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *memcg, gfp_t gfp_mask, bool noswap, struct zone *zone, unsigned long *nr_scanned) @@ -2388,10 +2388,10 @@ unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem, .may_unmap = 1, .may_swap = !noswap, .order = 0, - .target_mem_cgroup = mem, + .target_mem_cgroup = memcg, }; struct mem_cgroup_zone mz = { - .mem_cgroup = mem, + .mem_cgroup = memcg, .zone = zone, }; @@ -2417,7 +2417,7 @@ unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem, return sc.nr_reclaimed; } -unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont, +unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *memcg, gfp_t gfp_mask, bool noswap) { @@ -2430,7 +2430,7 @@ unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont, .may_swap = !noswap, .nr_to_reclaim = SWAP_CLUSTER_MAX, .order = 0, - .target_mem_cgroup = mem_cont, + .target_mem_cgroup = memcg, .nodemask = NULL, /* we don't care the placement */ .gfp_mask = (gfp_mask & GFP_RECLAIM_MASK) | (GFP_HIGHUSER_MOVABLE & ~GFP_RECLAIM_MASK), @@ -2444,7 +2444,7 @@ unsigned long try_to_free_mem_cgroup_pages(struct mem_cgroup *mem_cont, * take care of from where we get pages. So the node where we start the * scan does not need to be the current node. */ - nid = mem_cgroup_select_victim_node(mem_cont); + nid = mem_cgroup_select_victim_node(memcg); zonelist = NODE_DATA(nid)->node_zonelists; |