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Date: Fri, 11 Mar 2016 16:30:11 +0900
From: Minchan Kim <minchan@...nel.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org,
jlayton@...chiereds.net, bfields@...ldses.org,
Vlastimil Babka <vbabka@...e.cz>,
Joonsoo Kim <iamjoonsoo.kim@....com>, koct9i@...il.com,
aquini@...hat.com, virtualization@...ts.linux-foundation.org,
Mel Gorman <mgorman@...e.de>, Hugh Dickins <hughd@...gle.com>,
Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
rknize@...orola.com, Rik van Riel <riel@...hat.com>,
Gioh Kim <gurugio@...mail.net>,
Minchan Kim <minchan@...nel.org>
Subject: [PATCH v1 07/19] zsmalloc: reordering function parameter
This patch cleans up function parameter ordering to order
higher data structure first.
Signed-off-by: Minchan Kim <minchan@...nel.org>
---
mm/zsmalloc.c | 50 ++++++++++++++++++++++++++------------------------
1 file changed, 26 insertions(+), 24 deletions(-)
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 3c82011cc405..156edf909046 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -564,7 +564,7 @@ static const struct file_operations zs_stat_size_ops = {
.release = single_release,
};
-static int zs_pool_stat_create(const char *name, struct zs_pool *pool)
+static int zs_pool_stat_create(struct zs_pool *pool, const char *name)
{
struct dentry *entry;
@@ -604,7 +604,7 @@ static void __exit zs_stat_exit(void)
{
}
-static inline int zs_pool_stat_create(const char *name, struct zs_pool *pool)
+static inline int zs_pool_stat_create(struct zs_pool *pool, const char *name)
{
return 0;
}
@@ -650,8 +650,9 @@ static enum fullness_group get_fullness_group(struct page *first_page)
* have. This functions inserts the given zspage into the freelist
* identified by <class, fullness_group>.
*/
-static void insert_zspage(struct page *first_page, struct size_class *class,
- enum fullness_group fullness)
+static void insert_zspage(struct size_class *class,
+ enum fullness_group fullness,
+ struct page *first_page)
{
struct page **head;
@@ -682,8 +683,9 @@ static void insert_zspage(struct page *first_page, struct size_class *class,
* This function removes the given zspage from the freelist identified
* by <class, fullness_group>.
*/
-static void remove_zspage(struct page *first_page, struct size_class *class,
- enum fullness_group fullness)
+static void remove_zspage(struct size_class *class,
+ enum fullness_group fullness,
+ struct page *first_page)
{
struct page **head;
@@ -725,8 +727,8 @@ static enum fullness_group fix_fullness_group(struct size_class *class,
if (newfg == currfg)
goto out;
- remove_zspage(first_page, class, currfg);
- insert_zspage(first_page, class, newfg);
+ remove_zspage(class, currfg, first_page);
+ insert_zspage(class, newfg, first_page);
set_zspage_mapping(first_page, class_idx, newfg);
out:
@@ -910,7 +912,7 @@ static void free_zspage(struct page *first_page)
}
/* Initialize a newly allocated zspage */
-static void init_zspage(struct page *first_page, struct size_class *class)
+static void init_zspage(struct size_class *class, struct page *first_page)
{
unsigned long off = 0;
struct page *page = first_page;
@@ -998,7 +1000,7 @@ static struct page *alloc_zspage(struct size_class *class, gfp_t flags)
prev_page = page;
}
- init_zspage(first_page, class);
+ init_zspage(class, first_page);
first_page->freelist = location_to_obj(first_page, 0);
/* Maximum number of objects we can store in this zspage */
@@ -1345,8 +1347,8 @@ void zs_unmap_object(struct zs_pool *pool, unsigned long handle)
}
EXPORT_SYMBOL_GPL(zs_unmap_object);
-static unsigned long obj_malloc(struct page *first_page,
- struct size_class *class, unsigned long handle)
+static unsigned long obj_malloc(struct size_class *class,
+ struct page *first_page, unsigned long handle)
{
unsigned long obj;
struct link_free *link;
@@ -1423,7 +1425,7 @@ unsigned long zs_malloc(struct zs_pool *pool, size_t size)
class->size, class->pages_per_zspage));
}
- obj = obj_malloc(first_page, class, handle);
+ obj = obj_malloc(class, first_page, handle);
/* Now move the zspage to another fullness group, if required */
fix_fullness_group(class, first_page);
record_obj(handle, obj);
@@ -1496,8 +1498,8 @@ void zs_free(struct zs_pool *pool, unsigned long handle)
}
EXPORT_SYMBOL_GPL(zs_free);
-static void zs_object_copy(unsigned long dst, unsigned long src,
- struct size_class *class)
+static void zs_object_copy(struct size_class *class, unsigned long dst,
+ unsigned long src)
{
struct page *s_page, *d_page;
unsigned long s_objidx, d_objidx;
@@ -1563,8 +1565,8 @@ static void zs_object_copy(unsigned long dst, unsigned long src,
* Find alloced object in zspage from index object and
* return handle.
*/
-static unsigned long find_alloced_obj(struct page *page, int index,
- struct size_class *class)
+static unsigned long find_alloced_obj(struct size_class *class,
+ struct page *page, int index)
{
unsigned long head;
int offset = 0;
@@ -1614,7 +1616,7 @@ static int migrate_zspage(struct zs_pool *pool, struct size_class *class,
int ret = 0;
while (1) {
- handle = find_alloced_obj(s_page, index, class);
+ handle = find_alloced_obj(class, s_page, index);
if (!handle) {
s_page = get_next_page(s_page);
if (!s_page)
@@ -1631,8 +1633,8 @@ static int migrate_zspage(struct zs_pool *pool, struct size_class *class,
}
used_obj = handle_to_obj(handle);
- free_obj = obj_malloc(d_page, class, handle);
- zs_object_copy(free_obj, used_obj, class);
+ free_obj = obj_malloc(class, d_page, handle);
+ zs_object_copy(class, free_obj, used_obj);
index++;
/*
* record_obj updates handle's value to free_obj and it will
@@ -1661,7 +1663,7 @@ static struct page *isolate_target_page(struct size_class *class)
for (i = 0; i < _ZS_NR_FULLNESS_GROUPS; i++) {
page = class->fullness_list[i];
if (page) {
- remove_zspage(page, class, i);
+ remove_zspage(class, i, page);
break;
}
}
@@ -1684,7 +1686,7 @@ static enum fullness_group putback_zspage(struct zs_pool *pool,
enum fullness_group fullness;
fullness = get_fullness_group(first_page);
- insert_zspage(first_page, class, fullness);
+ insert_zspage(class, fullness, first_page);
set_zspage_mapping(first_page, class->index, fullness);
if (fullness == ZS_EMPTY) {
@@ -1709,7 +1711,7 @@ static struct page *isolate_source_page(struct size_class *class)
if (!page)
continue;
- remove_zspage(page, class, i);
+ remove_zspage(class, i, page);
break;
}
@@ -1943,7 +1945,7 @@ struct zs_pool *zs_create_pool(const char *name, gfp_t flags)
pool->flags = flags;
- if (zs_pool_stat_create(name, pool))
+ if (zs_pool_stat_create(pool, name))
goto err;
/*
--
1.9.1
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