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author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-06 22:27:08 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-06 22:27:08 -0700 |
commit | 9f45efb9286268e01d5022d34a58a68f53ca3072 (patch) | |
tree | ac152f5ab7bf104ee2c4ad3a596ce0d2595f1d59 /kernel | |
parent | dc502142b65b9e31eb90ab4344b3acadb2698317 (diff) | |
parent | 4932381ee2a77a21641009149722e1bb92bd99e2 (diff) | |
download | linux-stable-9f45efb9286268e01d5022d34a58a68f53ca3072.tar.gz linux-stable-9f45efb9286268e01d5022d34a58a68f53ca3072.tar.bz2 linux-stable-9f45efb9286268e01d5022d34a58a68f53ca3072.zip |
Merge branch 'akpm' (patches from Andrew)
Merge misc updates from Andrew Morton:
- a few hotfixes
- various misc updates
- ocfs2 updates
- most of MM
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (108 commits)
mm, memory_hotplug: move movable_node to the hotplug proper
mm, memory_hotplug: drop CONFIG_MOVABLE_NODE
mm, memory_hotplug: drop artificial restriction on online/offline
mm: memcontrol: account slab stats per lruvec
mm: memcontrol: per-lruvec stats infrastructure
mm: memcontrol: use generic mod_memcg_page_state for kmem pages
mm: memcontrol: use the node-native slab memory counters
mm: vmstat: move slab statistics from zone to node counters
mm/zswap.c: delete an error message for a failed memory allocation in zswap_dstmem_prepare()
mm/zswap.c: improve a size determination in zswap_frontswap_init()
mm/zswap.c: delete an error message for a failed memory allocation in zswap_pool_create()
mm/swapfile.c: sort swap entries before free
mm/oom_kill: count global and memory cgroup oom kills
mm: per-cgroup memory reclaim stats
mm: kmemleak: treat vm_struct as alternative reference to vmalloc'ed objects
mm: kmemleak: factor object reference updating out of scan_block()
mm: kmemleak: slightly reduce the size of some structures on 64-bit architectures
mm, mempolicy: don't check cpuset seqlock where it doesn't matter
mm, cpuset: always use seqlock when changing task's nodemask
mm, mempolicy: simplify rebinding mempolicies when updating cpusets
...
Diffstat (limited to 'kernel')
-rw-r--r-- | kernel/cgroup/cpuset.c | 33 | ||||
-rw-r--r-- | kernel/exit.c | 1 | ||||
-rw-r--r-- | kernel/extable.c | 2 | ||||
-rw-r--r-- | kernel/fork.c | 8 | ||||
-rw-r--r-- | kernel/locking/qspinlock_paravirt.h | 3 | ||||
-rw-r--r-- | kernel/memremap.c | 6 | ||||
-rw-r--r-- | kernel/module.c | 4 | ||||
-rw-r--r-- | kernel/pid.c | 7 | ||||
-rw-r--r-- | kernel/power/snapshot.c | 4 |
9 files changed, 25 insertions, 43 deletions
diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index ae643412948a..ca8376e5008c 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -1038,40 +1038,25 @@ static void cpuset_post_attach(void) * @tsk: the task to change * @newmems: new nodes that the task will be set * - * In order to avoid seeing no nodes if the old and new nodes are disjoint, - * we structure updates as setting all new allowed nodes, then clearing newly - * disallowed ones. + * We use the mems_allowed_seq seqlock to safely update both tsk->mems_allowed + * and rebind an eventual tasks' mempolicy. If the task is allocating in + * parallel, it might temporarily see an empty intersection, which results in + * a seqlock check and retry before OOM or allocation failure. */ static void cpuset_change_task_nodemask(struct task_struct *tsk, nodemask_t *newmems) { - bool need_loop; - task_lock(tsk); - /* - * Determine if a loop is necessary if another thread is doing - * read_mems_allowed_begin(). If at least one node remains unchanged and - * tsk does not have a mempolicy, then an empty nodemask will not be - * possible when mems_allowed is larger than a word. - */ - need_loop = task_has_mempolicy(tsk) || - !nodes_intersects(*newmems, tsk->mems_allowed); - if (need_loop) { - local_irq_disable(); - write_seqcount_begin(&tsk->mems_allowed_seq); - } + local_irq_disable(); + write_seqcount_begin(&tsk->mems_allowed_seq); nodes_or(tsk->mems_allowed, tsk->mems_allowed, *newmems); - mpol_rebind_task(tsk, newmems, MPOL_REBIND_STEP1); - - mpol_rebind_task(tsk, newmems, MPOL_REBIND_STEP2); + mpol_rebind_task(tsk, newmems); tsk->mems_allowed = *newmems; - if (need_loop) { - write_seqcount_end(&tsk->mems_allowed_seq); - local_irq_enable(); - } + write_seqcount_end(&tsk->mems_allowed_seq); + local_irq_enable(); task_unlock(tsk); } diff --git a/kernel/exit.c b/kernel/exit.c index b0cc86a2d00b..2bbc23273e2f 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -51,7 +51,6 @@ #include <linux/task_io_accounting_ops.h> #include <linux/tracehook.h> #include <linux/fs_struct.h> -#include <linux/userfaultfd_k.h> #include <linux/init_task.h> #include <linux/perf_event.h> #include <trace/events/sched.h> diff --git a/kernel/extable.c b/kernel/extable.c index 0fbdd8582f08..223df4a328a4 100644 --- a/kernel/extable.c +++ b/kernel/extable.c @@ -69,7 +69,7 @@ static inline int init_kernel_text(unsigned long addr) return 0; } -int core_kernel_text(unsigned long addr) +int notrace core_kernel_text(unsigned long addr) { if (addr >= (unsigned long)_stext && addr < (unsigned long)_etext) diff --git a/kernel/fork.c b/kernel/fork.c index e53770d2bf95..aa01b810c0bd 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -326,8 +326,8 @@ static void account_kernel_stack(struct task_struct *tsk, int account) } /* All stack pages belong to the same memcg. */ - memcg_kmem_update_page_stat(vm->pages[0], MEMCG_KERNEL_STACK_KB, - account * (THREAD_SIZE / 1024)); + mod_memcg_page_state(vm->pages[0], MEMCG_KERNEL_STACK_KB, + account * (THREAD_SIZE / 1024)); } else { /* * All stack pages are in the same zone and belong to the @@ -338,8 +338,8 @@ static void account_kernel_stack(struct task_struct *tsk, int account) mod_zone_page_state(page_zone(first_page), NR_KERNEL_STACK_KB, THREAD_SIZE / 1024 * account); - memcg_kmem_update_page_stat(first_page, MEMCG_KERNEL_STACK_KB, - account * (THREAD_SIZE / 1024)); + mod_memcg_page_state(first_page, MEMCG_KERNEL_STACK_KB, + account * (THREAD_SIZE / 1024)); } } diff --git a/kernel/locking/qspinlock_paravirt.h b/kernel/locking/qspinlock_paravirt.h index e6b2f7ad3e51..4ccfcaae5b89 100644 --- a/kernel/locking/qspinlock_paravirt.h +++ b/kernel/locking/qspinlock_paravirt.h @@ -193,7 +193,8 @@ void __init __pv_init_lock_hash(void) */ pv_lock_hash = alloc_large_system_hash("PV qspinlock", sizeof(struct pv_hash_entry), - pv_hash_size, 0, HASH_EARLY, + pv_hash_size, 0, + HASH_EARLY | HASH_ZERO, &pv_lock_hash_bits, NULL, pv_hash_size, pv_hash_size); } diff --git a/kernel/memremap.c b/kernel/memremap.c index 23a6483c3666..124bed776532 100644 --- a/kernel/memremap.c +++ b/kernel/memremap.c @@ -358,7 +358,11 @@ void *devm_memremap_pages(struct device *dev, struct resource *res, goto err_pfn_remap; mem_hotplug_begin(); - error = arch_add_memory(nid, align_start, align_size, true); + error = arch_add_memory(nid, align_start, align_size, false); + if (!error) + move_pfn_range_to_zone(&NODE_DATA(nid)->node_zones[ZONE_DEVICE], + align_start >> PAGE_SHIFT, + align_size >> PAGE_SHIFT); mem_hotplug_done(); if (error) goto err_add_memory; diff --git a/kernel/module.c b/kernel/module.c index 1d958c6d5c24..b3dbdde82e80 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -49,9 +49,7 @@ #include <linux/rculist.h> #include <linux/uaccess.h> #include <asm/cacheflush.h> -#ifdef CONFIG_STRICT_MODULE_RWX -#include <asm/set_memory.h> -#endif +#include <linux/set_memory.h> #include <asm/mmu_context.h> #include <linux/license.h> #include <asm/sections.h> diff --git a/kernel/pid.c b/kernel/pid.c index fd1cde1e4576..731c4e528f4e 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -575,16 +575,13 @@ struct pid *find_ge_pid(int nr, struct pid_namespace *ns) */ void __init pidhash_init(void) { - unsigned int i, pidhash_size; + unsigned int pidhash_size; pid_hash = alloc_large_system_hash("PID", sizeof(*pid_hash), 0, 18, - HASH_EARLY | HASH_SMALL, + HASH_EARLY | HASH_SMALL | HASH_ZERO, &pidhash_shift, NULL, 0, 4096); pidhash_size = 1U << pidhash_shift; - - for (i = 0; i < pidhash_size; i++) - INIT_HLIST_HEAD(&pid_hash[i]); } void __init pidmap_init(void) diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c index b7708e319941..222317721c5a 100644 --- a/kernel/power/snapshot.c +++ b/kernel/power/snapshot.c @@ -30,15 +30,13 @@ #include <linux/slab.h> #include <linux/compiler.h> #include <linux/ktime.h> +#include <linux/set_memory.h> #include <linux/uaccess.h> #include <asm/mmu_context.h> #include <asm/pgtable.h> #include <asm/tlbflush.h> #include <asm/io.h> -#ifdef CONFIG_ARCH_HAS_SET_MEMORY -#include <asm/set_memory.h> -#endif #include "power.h" |