mm: rename page_counter's count/limit into usage/max
This patch renames struct page_counter fields: count -> usage limit -> max and the corresponding functions: page_counter_limit() -> page_counter_set_max() mem_cgroup_get_limit() -> mem_cgroup_get_max() mem_cgroup_resize_limit() -> mem_cgroup_resize_max() memcg_update_kmem_limit() -> memcg_update_kmem_max() memcg_update_tcp_limit() -> memcg_update_tcp_max() The idea behind this renaming is to have the direct matching between memory cgroup knobs (low, high, max) and page_counters API. This is pure renaming, this patch doesn't bring any functional change. Link: http://lkml.kernel.org/r/20180405185921.4942-1-guro@fb.com Signed-off-by: Roman Gushchin <guro@fb.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
1c4bc43ddf
commit
bbec2e1517
|
@ -467,7 +467,7 @@ unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec,
|
|||
|
||||
void mem_cgroup_handle_over_high(void);
|
||||
|
||||
unsigned long mem_cgroup_get_limit(struct mem_cgroup *memcg);
|
||||
unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg);
|
||||
|
||||
void mem_cgroup_print_oom_info(struct mem_cgroup *memcg,
|
||||
struct task_struct *p);
|
||||
|
@ -858,7 +858,7 @@ mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static inline unsigned long mem_cgroup_get_limit(struct mem_cgroup *memcg)
|
||||
static inline unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
|
|
@ -7,8 +7,8 @@
|
|||
#include <asm/page.h>
|
||||
|
||||
struct page_counter {
|
||||
atomic_long_t count;
|
||||
unsigned long limit;
|
||||
atomic_long_t usage;
|
||||
unsigned long max;
|
||||
struct page_counter *parent;
|
||||
|
||||
/* legacy */
|
||||
|
@ -25,14 +25,14 @@ struct page_counter {
|
|||
static inline void page_counter_init(struct page_counter *counter,
|
||||
struct page_counter *parent)
|
||||
{
|
||||
atomic_long_set(&counter->count, 0);
|
||||
counter->limit = PAGE_COUNTER_MAX;
|
||||
atomic_long_set(&counter->usage, 0);
|
||||
counter->max = PAGE_COUNTER_MAX;
|
||||
counter->parent = parent;
|
||||
}
|
||||
|
||||
static inline unsigned long page_counter_read(struct page_counter *counter)
|
||||
{
|
||||
return atomic_long_read(&counter->count);
|
||||
return atomic_long_read(&counter->usage);
|
||||
}
|
||||
|
||||
void page_counter_cancel(struct page_counter *counter, unsigned long nr_pages);
|
||||
|
@ -41,7 +41,7 @@ bool page_counter_try_charge(struct page_counter *counter,
|
|||
unsigned long nr_pages,
|
||||
struct page_counter **fail);
|
||||
void page_counter_uncharge(struct page_counter *counter, unsigned long nr_pages);
|
||||
int page_counter_limit(struct page_counter *counter, unsigned long limit);
|
||||
int page_counter_set_max(struct page_counter *counter, unsigned long nr_pages);
|
||||
int page_counter_memparse(const char *buf, const char *max,
|
||||
unsigned long *nr_pages);
|
||||
|
||||
|
|
|
@ -84,7 +84,7 @@ static void hugetlb_cgroup_init(struct hugetlb_cgroup *h_cgroup,
|
|||
|
||||
limit = round_down(PAGE_COUNTER_MAX,
|
||||
1 << huge_page_order(&hstates[idx]));
|
||||
ret = page_counter_limit(counter, limit);
|
||||
ret = page_counter_set_max(counter, limit);
|
||||
VM_BUG_ON(ret);
|
||||
}
|
||||
}
|
||||
|
@ -273,7 +273,7 @@ static u64 hugetlb_cgroup_read_u64(struct cgroup_subsys_state *css,
|
|||
case RES_USAGE:
|
||||
return (u64)page_counter_read(counter) * PAGE_SIZE;
|
||||
case RES_LIMIT:
|
||||
return (u64)counter->limit * PAGE_SIZE;
|
||||
return (u64)counter->max * PAGE_SIZE;
|
||||
case RES_MAX_USAGE:
|
||||
return (u64)counter->watermark * PAGE_SIZE;
|
||||
case RES_FAILCNT:
|
||||
|
@ -306,7 +306,7 @@ static ssize_t hugetlb_cgroup_write(struct kernfs_open_file *of,
|
|||
switch (MEMFILE_ATTR(of_cft(of)->private)) {
|
||||
case RES_LIMIT:
|
||||
mutex_lock(&hugetlb_limit_mutex);
|
||||
ret = page_counter_limit(&h_cg->hugepage[idx], nr_pages);
|
||||
ret = page_counter_set_max(&h_cg->hugepage[idx], nr_pages);
|
||||
mutex_unlock(&hugetlb_limit_mutex);
|
||||
break;
|
||||
default:
|
||||
|
|
112
mm/memcontrol.c
112
mm/memcontrol.c
|
@ -1034,13 +1034,13 @@ static unsigned long mem_cgroup_margin(struct mem_cgroup *memcg)
|
|||
unsigned long limit;
|
||||
|
||||
count = page_counter_read(&memcg->memory);
|
||||
limit = READ_ONCE(memcg->memory.limit);
|
||||
limit = READ_ONCE(memcg->memory.max);
|
||||
if (count < limit)
|
||||
margin = limit - count;
|
||||
|
||||
if (do_memsw_account()) {
|
||||
count = page_counter_read(&memcg->memsw);
|
||||
limit = READ_ONCE(memcg->memsw.limit);
|
||||
limit = READ_ONCE(memcg->memsw.max);
|
||||
if (count <= limit)
|
||||
margin = min(margin, limit - count);
|
||||
else
|
||||
|
@ -1148,13 +1148,13 @@ void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
|
|||
|
||||
pr_info("memory: usage %llukB, limit %llukB, failcnt %lu\n",
|
||||
K((u64)page_counter_read(&memcg->memory)),
|
||||
K((u64)memcg->memory.limit), memcg->memory.failcnt);
|
||||
K((u64)memcg->memory.max), memcg->memory.failcnt);
|
||||
pr_info("memory+swap: usage %llukB, limit %llukB, failcnt %lu\n",
|
||||
K((u64)page_counter_read(&memcg->memsw)),
|
||||
K((u64)memcg->memsw.limit), memcg->memsw.failcnt);
|
||||
K((u64)memcg->memsw.max), memcg->memsw.failcnt);
|
||||
pr_info("kmem: usage %llukB, limit %llukB, failcnt %lu\n",
|
||||
K((u64)page_counter_read(&memcg->kmem)),
|
||||
K((u64)memcg->kmem.limit), memcg->kmem.failcnt);
|
||||
K((u64)memcg->kmem.max), memcg->kmem.failcnt);
|
||||
|
||||
for_each_mem_cgroup_tree(iter, memcg) {
|
||||
pr_info("Memory cgroup stats for ");
|
||||
|
@ -1179,21 +1179,21 @@ void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
|
|||
/*
|
||||
* Return the memory (and swap, if configured) limit for a memcg.
|
||||
*/
|
||||
unsigned long mem_cgroup_get_limit(struct mem_cgroup *memcg)
|
||||
unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg)
|
||||
{
|
||||
unsigned long limit;
|
||||
unsigned long max;
|
||||
|
||||
limit = memcg->memory.limit;
|
||||
max = memcg->memory.max;
|
||||
if (mem_cgroup_swappiness(memcg)) {
|
||||
unsigned long memsw_limit;
|
||||
unsigned long swap_limit;
|
||||
unsigned long memsw_max;
|
||||
unsigned long swap_max;
|
||||
|
||||
memsw_limit = memcg->memsw.limit;
|
||||
swap_limit = memcg->swap.limit;
|
||||
swap_limit = min(swap_limit, (unsigned long)total_swap_pages);
|
||||
limit = min(limit + swap_limit, memsw_limit);
|
||||
memsw_max = memcg->memsw.max;
|
||||
swap_max = memcg->swap.max;
|
||||
swap_max = min(swap_max, (unsigned long)total_swap_pages);
|
||||
max = min(max + swap_max, memsw_max);
|
||||
}
|
||||
return limit;
|
||||
return max;
|
||||
}
|
||||
|
||||
static bool mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask,
|
||||
|
@ -2444,10 +2444,10 @@ static inline int mem_cgroup_move_swap_account(swp_entry_t entry,
|
|||
}
|
||||
#endif
|
||||
|
||||
static DEFINE_MUTEX(memcg_limit_mutex);
|
||||
static DEFINE_MUTEX(memcg_max_mutex);
|
||||
|
||||
static int mem_cgroup_resize_limit(struct mem_cgroup *memcg,
|
||||
unsigned long limit, bool memsw)
|
||||
static int mem_cgroup_resize_max(struct mem_cgroup *memcg,
|
||||
unsigned long max, bool memsw)
|
||||
{
|
||||
bool enlarge = false;
|
||||
int ret;
|
||||
|
@ -2460,22 +2460,22 @@ static int mem_cgroup_resize_limit(struct mem_cgroup *memcg,
|
|||
break;
|
||||
}
|
||||
|
||||
mutex_lock(&memcg_limit_mutex);
|
||||
mutex_lock(&memcg_max_mutex);
|
||||
/*
|
||||
* Make sure that the new limit (memsw or memory limit) doesn't
|
||||
* break our basic invariant rule memory.limit <= memsw.limit.
|
||||
* break our basic invariant rule memory.max <= memsw.max.
|
||||
*/
|
||||
limits_invariant = memsw ? limit >= memcg->memory.limit :
|
||||
limit <= memcg->memsw.limit;
|
||||
limits_invariant = memsw ? max >= memcg->memory.max :
|
||||
max <= memcg->memsw.max;
|
||||
if (!limits_invariant) {
|
||||
mutex_unlock(&memcg_limit_mutex);
|
||||
mutex_unlock(&memcg_max_mutex);
|
||||
ret = -EINVAL;
|
||||
break;
|
||||
}
|
||||
if (limit > counter->limit)
|
||||
if (max > counter->max)
|
||||
enlarge = true;
|
||||
ret = page_counter_limit(counter, limit);
|
||||
mutex_unlock(&memcg_limit_mutex);
|
||||
ret = page_counter_set_max(counter, max);
|
||||
mutex_unlock(&memcg_max_mutex);
|
||||
|
||||
if (!ret)
|
||||
break;
|
||||
|
@ -2757,7 +2757,7 @@ static u64 mem_cgroup_read_u64(struct cgroup_subsys_state *css,
|
|||
return (u64)mem_cgroup_usage(memcg, true) * PAGE_SIZE;
|
||||
return (u64)page_counter_read(counter) * PAGE_SIZE;
|
||||
case RES_LIMIT:
|
||||
return (u64)counter->limit * PAGE_SIZE;
|
||||
return (u64)counter->max * PAGE_SIZE;
|
||||
case RES_MAX_USAGE:
|
||||
return (u64)counter->watermark * PAGE_SIZE;
|
||||
case RES_FAILCNT:
|
||||
|
@ -2871,24 +2871,24 @@ static void memcg_free_kmem(struct mem_cgroup *memcg)
|
|||
}
|
||||
#endif /* !CONFIG_SLOB */
|
||||
|
||||
static int memcg_update_kmem_limit(struct mem_cgroup *memcg,
|
||||
unsigned long limit)
|
||||
static int memcg_update_kmem_max(struct mem_cgroup *memcg,
|
||||
unsigned long max)
|
||||
{
|
||||
int ret;
|
||||
|
||||
mutex_lock(&memcg_limit_mutex);
|
||||
ret = page_counter_limit(&memcg->kmem, limit);
|
||||
mutex_unlock(&memcg_limit_mutex);
|
||||
mutex_lock(&memcg_max_mutex);
|
||||
ret = page_counter_set_max(&memcg->kmem, max);
|
||||
mutex_unlock(&memcg_max_mutex);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int memcg_update_tcp_limit(struct mem_cgroup *memcg, unsigned long limit)
|
||||
static int memcg_update_tcp_max(struct mem_cgroup *memcg, unsigned long max)
|
||||
{
|
||||
int ret;
|
||||
|
||||
mutex_lock(&memcg_limit_mutex);
|
||||
mutex_lock(&memcg_max_mutex);
|
||||
|
||||
ret = page_counter_limit(&memcg->tcpmem, limit);
|
||||
ret = page_counter_set_max(&memcg->tcpmem, max);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
|
@ -2913,7 +2913,7 @@ static int memcg_update_tcp_limit(struct mem_cgroup *memcg, unsigned long limit)
|
|||
memcg->tcpmem_active = true;
|
||||
}
|
||||
out:
|
||||
mutex_unlock(&memcg_limit_mutex);
|
||||
mutex_unlock(&memcg_max_mutex);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
@ -2941,16 +2941,16 @@ static ssize_t mem_cgroup_write(struct kernfs_open_file *of,
|
|||
}
|
||||
switch (MEMFILE_TYPE(of_cft(of)->private)) {
|
||||
case _MEM:
|
||||
ret = mem_cgroup_resize_limit(memcg, nr_pages, false);
|
||||
ret = mem_cgroup_resize_max(memcg, nr_pages, false);
|
||||
break;
|
||||
case _MEMSWAP:
|
||||
ret = mem_cgroup_resize_limit(memcg, nr_pages, true);
|
||||
ret = mem_cgroup_resize_max(memcg, nr_pages, true);
|
||||
break;
|
||||
case _KMEM:
|
||||
ret = memcg_update_kmem_limit(memcg, nr_pages);
|
||||
ret = memcg_update_kmem_max(memcg, nr_pages);
|
||||
break;
|
||||
case _TCP:
|
||||
ret = memcg_update_tcp_limit(memcg, nr_pages);
|
||||
ret = memcg_update_tcp_max(memcg, nr_pages);
|
||||
break;
|
||||
}
|
||||
break;
|
||||
|
@ -3126,8 +3126,8 @@ static int memcg_stat_show(struct seq_file *m, void *v)
|
|||
/* Hierarchical information */
|
||||
memory = memsw = PAGE_COUNTER_MAX;
|
||||
for (mi = memcg; mi; mi = parent_mem_cgroup(mi)) {
|
||||
memory = min(memory, mi->memory.limit);
|
||||
memsw = min(memsw, mi->memsw.limit);
|
||||
memory = min(memory, mi->memory.max);
|
||||
memsw = min(memsw, mi->memsw.max);
|
||||
}
|
||||
seq_printf(m, "hierarchical_memory_limit %llu\n",
|
||||
(u64)memory * PAGE_SIZE);
|
||||
|
@ -3626,7 +3626,7 @@ void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages,
|
|||
*pheadroom = PAGE_COUNTER_MAX;
|
||||
|
||||
while ((parent = parent_mem_cgroup(memcg))) {
|
||||
unsigned long ceiling = min(memcg->memory.limit, memcg->high);
|
||||
unsigned long ceiling = min(memcg->memory.max, memcg->high);
|
||||
unsigned long used = page_counter_read(&memcg->memory);
|
||||
|
||||
*pheadroom = min(*pheadroom, ceiling - min(ceiling, used));
|
||||
|
@ -4319,12 +4319,12 @@ static void mem_cgroup_css_reset(struct cgroup_subsys_state *css)
|
|||
{
|
||||
struct mem_cgroup *memcg = mem_cgroup_from_css(css);
|
||||
|
||||
page_counter_limit(&memcg->memory, PAGE_COUNTER_MAX);
|
||||
page_counter_limit(&memcg->swap, PAGE_COUNTER_MAX);
|
||||
page_counter_limit(&memcg->memsw, PAGE_COUNTER_MAX);
|
||||
page_counter_limit(&memcg->kmem, PAGE_COUNTER_MAX);
|
||||
page_counter_limit(&memcg->tcpmem, PAGE_COUNTER_MAX);
|
||||
memcg->low = 0;
|
||||
page_counter_set_max(&memcg->memory, PAGE_COUNTER_MAX);
|
||||
page_counter_set_max(&memcg->swap, PAGE_COUNTER_MAX);
|
||||
page_counter_set_max(&memcg->memsw, PAGE_COUNTER_MAX);
|
||||
page_counter_set_max(&memcg->kmem, PAGE_COUNTER_MAX);
|
||||
page_counter_set_max(&memcg->tcpmem, PAGE_COUNTER_MAX);
|
||||
memcg->high = PAGE_COUNTER_MAX;
|
||||
memcg->soft_limit = PAGE_COUNTER_MAX;
|
||||
memcg_wb_domain_size_changed(memcg);
|
||||
|
@ -5131,7 +5131,7 @@ static ssize_t memory_high_write(struct kernfs_open_file *of,
|
|||
static int memory_max_show(struct seq_file *m, void *v)
|
||||
{
|
||||
struct mem_cgroup *memcg = mem_cgroup_from_css(seq_css(m));
|
||||
unsigned long max = READ_ONCE(memcg->memory.limit);
|
||||
unsigned long max = READ_ONCE(memcg->memory.max);
|
||||
|
||||
if (max == PAGE_COUNTER_MAX)
|
||||
seq_puts(m, "max\n");
|
||||
|
@ -5155,7 +5155,7 @@ static ssize_t memory_max_write(struct kernfs_open_file *of,
|
|||
if (err)
|
||||
return err;
|
||||
|
||||
xchg(&memcg->memory.limit, max);
|
||||
xchg(&memcg->memory.max, max);
|
||||
|
||||
for (;;) {
|
||||
unsigned long nr_pages = page_counter_read(&memcg->memory);
|
||||
|
@ -6074,7 +6074,7 @@ long mem_cgroup_get_nr_swap_pages(struct mem_cgroup *memcg)
|
|||
return nr_swap_pages;
|
||||
for (; memcg != root_mem_cgroup; memcg = parent_mem_cgroup(memcg))
|
||||
nr_swap_pages = min_t(long, nr_swap_pages,
|
||||
READ_ONCE(memcg->swap.limit) -
|
||||
READ_ONCE(memcg->swap.max) -
|
||||
page_counter_read(&memcg->swap));
|
||||
return nr_swap_pages;
|
||||
}
|
||||
|
@ -6095,7 +6095,7 @@ bool mem_cgroup_swap_full(struct page *page)
|
|||
return false;
|
||||
|
||||
for (; memcg != root_mem_cgroup; memcg = parent_mem_cgroup(memcg))
|
||||
if (page_counter_read(&memcg->swap) * 2 >= memcg->swap.limit)
|
||||
if (page_counter_read(&memcg->swap) * 2 >= memcg->swap.max)
|
||||
return true;
|
||||
|
||||
return false;
|
||||
|
@ -6129,7 +6129,7 @@ static u64 swap_current_read(struct cgroup_subsys_state *css,
|
|||
static int swap_max_show(struct seq_file *m, void *v)
|
||||
{
|
||||
struct mem_cgroup *memcg = mem_cgroup_from_css(seq_css(m));
|
||||
unsigned long max = READ_ONCE(memcg->swap.limit);
|
||||
unsigned long max = READ_ONCE(memcg->swap.max);
|
||||
|
||||
if (max == PAGE_COUNTER_MAX)
|
||||
seq_puts(m, "max\n");
|
||||
|
@ -6151,9 +6151,9 @@ static ssize_t swap_max_write(struct kernfs_open_file *of,
|
|||
if (err)
|
||||
return err;
|
||||
|
||||
mutex_lock(&memcg_limit_mutex);
|
||||
err = page_counter_limit(&memcg->swap, max);
|
||||
mutex_unlock(&memcg_limit_mutex);
|
||||
mutex_lock(&memcg_max_mutex);
|
||||
err = page_counter_set_max(&memcg->swap, max);
|
||||
mutex_unlock(&memcg_max_mutex);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
|
|
|
@ -256,7 +256,7 @@ static enum oom_constraint constrained_alloc(struct oom_control *oc)
|
|||
int nid;
|
||||
|
||||
if (is_memcg_oom(oc)) {
|
||||
oc->totalpages = mem_cgroup_get_limit(oc->memcg) ?: 1;
|
||||
oc->totalpages = mem_cgroup_get_max(oc->memcg) ?: 1;
|
||||
return CONSTRAINT_MEMCG;
|
||||
}
|
||||
|
||||
|
|
|
@ -22,7 +22,7 @@ void page_counter_cancel(struct page_counter *counter, unsigned long nr_pages)
|
|||
{
|
||||
long new;
|
||||
|
||||
new = atomic_long_sub_return(nr_pages, &counter->count);
|
||||
new = atomic_long_sub_return(nr_pages, &counter->usage);
|
||||
/* More uncharges than charges? */
|
||||
WARN_ON_ONCE(new < 0);
|
||||
}
|
||||
|
@ -41,7 +41,7 @@ void page_counter_charge(struct page_counter *counter, unsigned long nr_pages)
|
|||
for (c = counter; c; c = c->parent) {
|
||||
long new;
|
||||
|
||||
new = atomic_long_add_return(nr_pages, &c->count);
|
||||
new = atomic_long_add_return(nr_pages, &c->usage);
|
||||
/*
|
||||
* This is indeed racy, but we can live with some
|
||||
* inaccuracy in the watermark.
|
||||
|
@ -82,9 +82,9 @@ bool page_counter_try_charge(struct page_counter *counter,
|
|||
* we either see the new limit or the setter sees the
|
||||
* counter has changed and retries.
|
||||
*/
|
||||
new = atomic_long_add_return(nr_pages, &c->count);
|
||||
if (new > c->limit) {
|
||||
atomic_long_sub(nr_pages, &c->count);
|
||||
new = atomic_long_add_return(nr_pages, &c->usage);
|
||||
if (new > c->max) {
|
||||
atomic_long_sub(nr_pages, &c->usage);
|
||||
/*
|
||||
* This is racy, but we can live with some
|
||||
* inaccuracy in the failcnt.
|
||||
|
@ -123,20 +123,20 @@ void page_counter_uncharge(struct page_counter *counter, unsigned long nr_pages)
|
|||
}
|
||||
|
||||
/**
|
||||
* page_counter_limit - limit the number of pages allowed
|
||||
* page_counter_set_max - set the maximum number of pages allowed
|
||||
* @counter: counter
|
||||
* @limit: limit to set
|
||||
* @nr_pages: limit to set
|
||||
*
|
||||
* Returns 0 on success, -EBUSY if the current number of pages on the
|
||||
* counter already exceeds the specified limit.
|
||||
*
|
||||
* The caller must serialize invocations on the same counter.
|
||||
*/
|
||||
int page_counter_limit(struct page_counter *counter, unsigned long limit)
|
||||
int page_counter_set_max(struct page_counter *counter, unsigned long nr_pages)
|
||||
{
|
||||
for (;;) {
|
||||
unsigned long old;
|
||||
long count;
|
||||
long usage;
|
||||
|
||||
/*
|
||||
* Update the limit while making sure that it's not
|
||||
|
@ -149,17 +149,17 @@ int page_counter_limit(struct page_counter *counter, unsigned long limit)
|
|||
* the limit, so if it sees the old limit, we see the
|
||||
* modified counter and retry.
|
||||
*/
|
||||
count = atomic_long_read(&counter->count);
|
||||
usage = atomic_long_read(&counter->usage);
|
||||
|
||||
if (count > limit)
|
||||
if (usage > nr_pages)
|
||||
return -EBUSY;
|
||||
|
||||
old = xchg(&counter->limit, limit);
|
||||
old = xchg(&counter->max, nr_pages);
|
||||
|
||||
if (atomic_long_read(&counter->count) <= count)
|
||||
if (atomic_long_read(&counter->usage) <= usage)
|
||||
return 0;
|
||||
|
||||
counter->limit = old;
|
||||
counter->max = old;
|
||||
cond_resched();
|
||||
}
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue