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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-26 21:32:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-26 21:32:40 -0700
commite12fab28df1d7ae9369839a3af260a41447a5e79 (patch)
tree2f638674612075002fb6cc5ad1201c701fe4c741
parent478a1469a7d27fe6b2f85fc801ecdeb8afc836e6 (diff)
parentbbccb9c7bbeb6c78eb467c191c97360160f13704 (diff)
downloadlinux-e12fab28df1d7ae9369839a3af260a41447a5e79.tar.gz
Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton: "10 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: drivers/pinctrl/intel/pinctrl-baytrail.c: fix build with gcc-4.4 update "mm/zsmalloc: don't fail if can't create debugfs info" dma-debug: avoid spinlock recursion when disabling dma-debug mm: oom_reaper: remove some bloat memcg: fix mem_cgroup_out_of_memory() return value. ocfs2: fix improper handling of return errno mm: slub: remove unused virt_to_obj() mm: kasan: remove unused 'reserved' field from struct kasan_alloc_meta mm: make CONFIG_DEFERRED_STRUCT_PAGE_INIT depends on !FLATMEM explicitly seqlock: fix raw_read_seqcount_latch()
-rw-r--r--drivers/pinctrl/intel/pinctrl-baytrail.c10
-rw-r--r--fs/ocfs2/inode.c7
-rw-r--r--include/linux/mm_types.h2
-rw-r--r--include/linux/sched.h4
-rw-r--r--include/linux/seqlock.h4
-rw-r--r--include/linux/slub_def.h16
-rw-r--r--kernel/fork.c2
-rw-r--r--lib/dma-debug.c2
-rw-r--r--mm/Kconfig1
-rw-r--r--mm/kasan/kasan.h1
-rw-r--r--mm/memcontrol.c2
-rw-r--r--mm/zsmalloc.c35
12 files changed, 37 insertions, 49 deletions
diff --git a/drivers/pinctrl/intel/pinctrl-baytrail.c b/drivers/pinctrl/intel/pinctrl-baytrail.c
index 55182fc58c6a..677a811b3a6f 100644
--- a/drivers/pinctrl/intel/pinctrl-baytrail.c
+++ b/drivers/pinctrl/intel/pinctrl-baytrail.c
@@ -153,8 +153,10 @@ struct byt_community {
.name = (n), \
.pins = (p), \
.npins = ARRAY_SIZE((p)), \
- .has_simple_funcs = 1, \
- .simple_funcs = (f), \
+ .has_simple_funcs = 1, \
+ { \
+ .simple_funcs = (f), \
+ }, \
.nfuncs = ARRAY_SIZE((f)), \
}
#define PIN_GROUP_MIXED(n, p, f) \
@@ -163,7 +165,9 @@ struct byt_community {
.pins = (p), \
.npins = ARRAY_SIZE((p)), \
.has_simple_funcs = 0, \
- .mixed_funcs = (f), \
+ { \
+ .mixed_funcs = (f), \
+ }, \
.nfuncs = ARRAY_SIZE((f)), \
}
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 0748777f2e2a..c56a7679df93 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -176,12 +176,7 @@ struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags,
}
if (is_bad_inode(inode)) {
iput(inode);
- if ((flags & OCFS2_FI_FLAG_FILECHECK_CHK) ||
- (flags & OCFS2_FI_FLAG_FILECHECK_FIX))
- /* Return OCFS2_FILECHECK_ERR_XXX related errno */
- inode = ERR_PTR(rc);
- else
- inode = ERR_PTR(-ESTALE);
+ inode = ERR_PTR(rc);
goto bail;
}
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index d553855503e6..ca3e517980a0 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -514,7 +514,9 @@ struct mm_struct {
#ifdef CONFIG_HUGETLB_PAGE
atomic_long_t hugetlb_usage;
#endif
+#ifdef CONFIG_MMU
struct work_struct async_put_work;
+#endif
};
static inline void mm_init_cpumask(struct mm_struct *mm)
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 23e075dcdfe4..6e42ada26345 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2745,10 +2745,12 @@ static inline bool mmget_not_zero(struct mm_struct *mm)
/* mmput gets rid of the mappings and all user-space */
extern void mmput(struct mm_struct *);
-/* same as above but performs the slow path from the async kontext. Can
+#ifdef CONFIG_MMU
+/* same as above but performs the slow path from the async context. Can
* be called from the atomic context as well
*/
extern void mmput_async(struct mm_struct *);
+#endif
/* Grab a reference to a task's mm, if it is not already going away */
extern struct mm_struct *get_task_mm(struct task_struct *task);
diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h
index e0582106ef4f..7973a821ac58 100644
--- a/include/linux/seqlock.h
+++ b/include/linux/seqlock.h
@@ -277,7 +277,7 @@ static inline void raw_write_seqcount_barrier(seqcount_t *s)
static inline int raw_read_seqcount_latch(seqcount_t *s)
{
- return lockless_dereference(s->sequence);
+ return lockless_dereference(s)->sequence;
}
/**
@@ -331,7 +331,7 @@ static inline int raw_read_seqcount_latch(seqcount_t *s)
* unsigned seq, idx;
*
* do {
- * seq = lockless_dereference(latch->seq);
+ * seq = lockless_dereference(latch)->seq;
*
* idx = seq & 0x01;
* entry = data_query(latch->data[idx], ...);
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 665cd0cd18b8..d1faa019c02a 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -111,22 +111,6 @@ static inline void sysfs_slab_remove(struct kmem_cache *s)
}
#endif
-
-/**
- * virt_to_obj - returns address of the beginning of object.
- * @s: object's kmem_cache
- * @slab_page: address of slab page
- * @x: address within object memory range
- *
- * Returns address of the beginning of object
- */
-static inline void *virt_to_obj(struct kmem_cache *s,
- const void *slab_page,
- const void *x)
-{
- return (void *)x - ((x - slab_page) % s->size);
-}
-
void object_err(struct kmem_cache *s, struct page *page,
u8 *object, char *reason);
diff --git a/kernel/fork.c b/kernel/fork.c
index 47887bba944f..5c2c355aa97f 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -736,6 +736,7 @@ void mmput(struct mm_struct *mm)
}
EXPORT_SYMBOL_GPL(mmput);
+#ifdef CONFIG_MMU
static void mmput_async_fn(struct work_struct *work)
{
struct mm_struct *mm = container_of(work, struct mm_struct, async_put_work);
@@ -749,6 +750,7 @@ void mmput_async(struct mm_struct *mm)
schedule_work(&mm->async_put_work);
}
}
+#endif
/**
* set_mm_exe_file - change a reference to the mm's executable file
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 4a1515f4b452..51a76af25c66 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -657,9 +657,9 @@ static struct dma_debug_entry *dma_entry_alloc(void)
spin_lock_irqsave(&free_entries_lock, flags);
if (list_empty(&free_entries)) {
- pr_err("DMA-API: debugging out of memory - disabling\n");
global_disable = true;
spin_unlock_irqrestore(&free_entries_lock, flags);
+ pr_err("DMA-API: debugging out of memory - disabling\n");
return NULL;
}
diff --git a/mm/Kconfig b/mm/Kconfig
index 2664c118b5d2..22fa8189e4fc 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -649,6 +649,7 @@ config DEFERRED_STRUCT_PAGE_INIT
default n
depends on ARCH_SUPPORTS_DEFERRED_STRUCT_PAGE_INIT
depends on MEMORY_HOTPLUG
+ depends on !FLATMEM
help
Ordinarily all struct pages are initialised during early boot in a
single thread. On very large machines this can take a considerable
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index 7f7ac51d7faf..fb87923552ef 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -77,7 +77,6 @@ struct kasan_alloc_meta {
struct kasan_track track;
u32 state : 2; /* enum kasan_state */
u32 alloc_size : 30;
- u32 reserved;
};
struct qlist_node {
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index cf428d7b9a03..f6477a9dbe7a 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1302,6 +1302,8 @@ static bool mem_cgroup_out_of_memory(struct mem_cgroup *memcg, gfp_t gfp_mask,
mem_cgroup_iter_break(memcg, iter);
if (chosen)
put_task_struct(chosen);
+ /* Set a dummy value to return "true". */
+ chosen = (void *) 1;
goto unlock;
case OOM_SCAN_OK:
break;
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 72698db958e7..b6d4f258cb53 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -45,6 +45,8 @@
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
@@ -483,16 +485,16 @@ static inline unsigned long zs_stat_get(struct size_class *class,
#ifdef CONFIG_ZSMALLOC_STAT
-static int __init zs_stat_init(void)
+static void __init zs_stat_init(void)
{
- if (!debugfs_initialized())
- return -ENODEV;
+ if (!debugfs_initialized()) {
+ pr_warn("debugfs not available, stat dir not created\n");
+ return;
+ }
zs_stat_root = debugfs_create_dir("zsmalloc", NULL);
if (!zs_stat_root)
- return -ENOMEM;
-
- return 0;
+ pr_warn("debugfs 'zsmalloc' stat dir creation failed\n");
}
static void __exit zs_stat_exit(void)
@@ -577,8 +579,10 @@ static void zs_pool_stat_create(struct zs_pool *pool, const char *name)
{
struct dentry *entry;
- if (!zs_stat_root)
+ if (!zs_stat_root) {
+ pr_warn("no root stat dir, not creating <%s> stat dir\n", name);
return;
+ }
entry = debugfs_create_dir(name, zs_stat_root);
if (!entry) {
@@ -592,7 +596,8 @@ static void zs_pool_stat_create(struct zs_pool *pool, const char *name)
if (!entry) {
pr_warn("%s: debugfs file entry <%s> creation failed\n",
name, "classes");
- return;
+ debugfs_remove_recursive(pool->stat_dentry);
+ pool->stat_dentry = NULL;
}
}
@@ -602,9 +607,8 @@ static void zs_pool_stat_destroy(struct zs_pool *pool)
}
#else /* CONFIG_ZSMALLOC_STAT */
-static int __init zs_stat_init(void)
+static void __init zs_stat_init(void)
{
- return 0;
}
static void __exit zs_stat_exit(void)
@@ -2011,17 +2015,10 @@ static int __init zs_init(void)
zpool_register_driver(&zs_zpool_driver);
#endif
- ret = zs_stat_init();
- if (ret) {
- pr_err("zs stat initialization failed\n");
- goto stat_fail;
- }
+ zs_stat_init();
+
return 0;
-stat_fail:
-#ifdef CONFIG_ZPOOL
- zpool_unregister_driver(&zs_zpool_driver);
-#endif
notifier_fail:
zs_unregister_cpu_notifier();