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authorLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 09:52:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 09:52:05 -0700
commit47a469421d792dcb91a1e73319d26134241953d2 (patch)
tree6a388381a434ebe87fed2fbb10a53ced7a7ce8b5 /mm
parentc13c81006314ad76c2b31824960a900385601b8b (diff)
parent51229b495340bd7a02ce3622d1966829b67054ea (diff)
downloadop-kernel-dev-47a469421d792dcb91a1e73319d26134241953d2.zip
op-kernel-dev-47a469421d792dcb91a1e73319d26134241953d2.tar.gz
Merge branch 'akpm' (patches from Andrew)
Merge second patchbomb from Andrew Morton: - most of the rest of MM - lots of misc things - procfs updates - printk feature work - updates to get_maintainer, MAINTAINERS, checkpatch - lib/ updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (96 commits) exit,stats: /* obey this comment */ coredump: add __printf attribute to cn_*printf functions coredump: use from_kuid/kgid when formatting corename fs/reiserfs: remove unneeded cast NILFS2: support NFSv2 export fs/befs/btree.c: remove unneeded initializations fs/minix: remove unneeded cast init/do_mounts.c: add create_dev() failure log kasan: remove duplicate definition of the macro KASAN_FREE_PAGE fs/efs: femove unneeded cast checkpatch: emit "NOTE: <types>" message only once after multiple files checkpatch: emit an error when there's a diff in a changelog checkpatch: validate MODULE_LICENSE content checkpatch: add multi-line handling for PREFER_ETHER_ADDR_COPY checkpatch: suggest using eth_zero_addr() and eth_broadcast_addr() checkpatch: fix processing of MEMSET issues checkpatch: suggest using ether_addr_equal*() checkpatch: avoid NOT_UNIFIED_DIFF errors on cover-letter.patch files checkpatch: remove local from codespell path checkpatch: add --showfile to allow input via pipe to show filenames ...
Diffstat (limited to 'mm')
-rw-r--r--mm/hugetlb.c10
-rw-r--r--mm/kasan/kasan.h1
-rw-r--r--mm/zbud.c23
-rw-r--r--mm/zpool.c35
-rw-r--r--mm/zsmalloc.c7
-rw-r--r--mm/zswap.c12
6 files changed, 30 insertions, 58 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 75c0eef..a8c3087 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -975,7 +975,6 @@ static void update_and_free_page(struct hstate *h, struct page *page)
destroy_compound_gigantic_page(page, huge_page_order(h));
free_gigantic_page(page, huge_page_order(h));
} else {
- arch_release_hugepage(page);
__free_pages(page, huge_page_order(h));
}
}
@@ -1160,10 +1159,6 @@ static struct page *alloc_fresh_huge_page_node(struct hstate *h, int nid)
__GFP_REPEAT|__GFP_NOWARN,
huge_page_order(h));
if (page) {
- if (arch_prepare_hugepage(page)) {
- __free_pages(page, huge_page_order(h));
- return NULL;
- }
prep_new_huge_page(h, page, nid);
}
@@ -1315,11 +1310,6 @@ static struct page *alloc_buddy_huge_page(struct hstate *h, int nid)
htlb_alloc_mask(h)|__GFP_COMP|__GFP_THISNODE|
__GFP_REPEAT|__GFP_NOWARN, huge_page_order(h));
- if (page && arch_prepare_hugepage(page)) {
- __free_pages(page, huge_page_order(h));
- page = NULL;
- }
-
spin_lock(&hugetlb_lock);
if (page) {
INIT_LIST_HEAD(&page->lru);
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index 4986b0a..c242adf 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -7,7 +7,6 @@
#define KASAN_SHADOW_MASK (KASAN_SHADOW_SCALE_SIZE - 1)
#define KASAN_FREE_PAGE 0xFF /* page was freed */
-#define KASAN_FREE_PAGE 0xFF /* page was freed */
#define KASAN_PAGE_REDZONE 0xFE /* redzone for kmalloc_large allocations */
#define KASAN_KMALLOC_REDZONE 0xFC /* redzone inside slub object */
#define KASAN_KMALLOC_FREE 0xFB /* object was freed (kmem_cache_free/kfree) */
diff --git a/mm/zbud.c b/mm/zbud.c
index 2ee4e45..f3bf6f7 100644
--- a/mm/zbud.c
+++ b/mm/zbud.c
@@ -97,6 +97,10 @@ struct zbud_pool {
struct list_head lru;
u64 pages_nr;
struct zbud_ops *ops;
+#ifdef CONFIG_ZPOOL
+ struct zpool *zpool;
+ struct zpool_ops *zpool_ops;
+#endif
};
/*
@@ -123,7 +127,10 @@ struct zbud_header {
static int zbud_zpool_evict(struct zbud_pool *pool, unsigned long handle)
{
- return zpool_evict(pool, handle);
+ if (pool->zpool && pool->zpool_ops && pool->zpool_ops->evict)
+ return pool->zpool_ops->evict(pool->zpool, handle);
+ else
+ return -ENOENT;
}
static struct zbud_ops zbud_zpool_ops = {
@@ -131,9 +138,17 @@ static struct zbud_ops zbud_zpool_ops = {
};
static void *zbud_zpool_create(char *name, gfp_t gfp,
- struct zpool_ops *zpool_ops)
+ struct zpool_ops *zpool_ops,
+ struct zpool *zpool)
{
- return zbud_create_pool(gfp, zpool_ops ? &zbud_zpool_ops : NULL);
+ struct zbud_pool *pool;
+
+ pool = zbud_create_pool(gfp, zpool_ops ? &zbud_zpool_ops : NULL);
+ if (pool) {
+ pool->zpool = zpool;
+ pool->zpool_ops = zpool_ops;
+ }
+ return pool;
}
static void zbud_zpool_destroy(void *pool)
@@ -292,7 +307,7 @@ struct zbud_pool *zbud_create_pool(gfp_t gfp, struct zbud_ops *ops)
struct zbud_pool *pool;
int i;
- pool = kmalloc(sizeof(struct zbud_pool), gfp);
+ pool = kzalloc(sizeof(struct zbud_pool), gfp);
if (!pool)
return NULL;
spin_lock_init(&pool->lock);
diff --git a/mm/zpool.c b/mm/zpool.c
index bacdab6..722a4f6 100644
--- a/mm/zpool.c
+++ b/mm/zpool.c
@@ -73,33 +73,6 @@ int zpool_unregister_driver(struct zpool_driver *driver)
}
EXPORT_SYMBOL(zpool_unregister_driver);
-/**
- * zpool_evict() - evict callback from a zpool implementation.
- * @pool: pool to evict from.
- * @handle: handle to evict.
- *
- * This can be used by zpool implementations to call the
- * user's evict zpool_ops struct evict callback.
- */
-int zpool_evict(void *pool, unsigned long handle)
-{
- struct zpool *zpool;
-
- spin_lock(&pools_lock);
- list_for_each_entry(zpool, &pools_head, list) {
- if (zpool->pool == pool) {
- spin_unlock(&pools_lock);
- if (!zpool->ops || !zpool->ops->evict)
- return -EINVAL;
- return zpool->ops->evict(zpool, handle);
- }
- }
- spin_unlock(&pools_lock);
-
- return -ENOENT;
-}
-EXPORT_SYMBOL(zpool_evict);
-
static struct zpool_driver *zpool_get_driver(char *type)
{
struct zpool_driver *driver;
@@ -147,7 +120,7 @@ struct zpool *zpool_create_pool(char *type, char *name, gfp_t gfp,
struct zpool_driver *driver;
struct zpool *zpool;
- pr_info("creating pool type %s\n", type);
+ pr_debug("creating pool type %s\n", type);
driver = zpool_get_driver(type);
@@ -170,7 +143,7 @@ struct zpool *zpool_create_pool(char *type, char *name, gfp_t gfp,
zpool->type = driver->type;
zpool->driver = driver;
- zpool->pool = driver->create(name, gfp, ops);
+ zpool->pool = driver->create(name, gfp, ops, zpool);
zpool->ops = ops;
if (!zpool->pool) {
@@ -180,7 +153,7 @@ struct zpool *zpool_create_pool(char *type, char *name, gfp_t gfp,
return NULL;
}
- pr_info("created %s pool\n", type);
+ pr_debug("created pool type %s\n", type);
spin_lock(&pools_lock);
list_add(&zpool->list, &pools_head);
@@ -202,7 +175,7 @@ struct zpool *zpool_create_pool(char *type, char *name, gfp_t gfp,
*/
void zpool_destroy_pool(struct zpool *zpool)
{
- pr_info("destroying pool type %s\n", zpool->type);
+ pr_debug("destroying pool type %s\n", zpool->type);
spin_lock(&pools_lock);
list_del(&zpool->list);
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index a8b5e74..0a7f81a 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -45,10 +45,6 @@
*
*/
-#ifdef CONFIG_ZSMALLOC_DEBUG
-#define DEBUG
-#endif
-
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
@@ -313,7 +309,8 @@ static void record_obj(unsigned long handle, unsigned long obj)
#ifdef CONFIG_ZPOOL
-static void *zs_zpool_create(char *name, gfp_t gfp, struct zpool_ops *zpool_ops)
+static void *zs_zpool_create(char *name, gfp_t gfp, struct zpool_ops *zpool_ops,
+ struct zpool *zpool)
{
return zs_create_pool(name, gfp);
}
diff --git a/mm/zswap.c b/mm/zswap.c
index 4249e82f..2d5727b 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -75,9 +75,10 @@ static u64 zswap_duplicate_entry;
/*********************************
* tunables
**********************************/
-/* Enable/disable zswap (disabled by default, fixed at boot for now) */
-static bool zswap_enabled __read_mostly;
-module_param_named(enabled, zswap_enabled, bool, 0444);
+
+/* Enable/disable zswap (disabled by default) */
+static bool zswap_enabled;
+module_param_named(enabled, zswap_enabled, bool, 0644);
/* Compressor to be used by zswap (fixed at boot for now) */
#define ZSWAP_COMPRESSOR_DEFAULT "lzo"
@@ -648,7 +649,7 @@ static int zswap_frontswap_store(unsigned type, pgoff_t offset,
u8 *src, *dst;
struct zswap_header *zhdr;
- if (!tree) {
+ if (!zswap_enabled || !tree) {
ret = -ENODEV;
goto reject;
}
@@ -901,9 +902,6 @@ static int __init init_zswap(void)
{
gfp_t gfp = __GFP_NORETRY | __GFP_NOWARN;
- if (!zswap_enabled)
- return 0;
-
pr_info("loading zswap\n");
zswap_pool = zpool_create_pool(zswap_zpool_type, "zswap", gfp,
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