The patch titled
Subject: mm: simplify page_zone() and get_deferred_split_queue() with page_pgdat()
has been added to the -mm mm-unstable branch. Its filename is
mm-simplify-page_zone-and-get_deferred_split_queue-with-page_pgdat.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-simplify-page_zone-and-get_deferred_split_queue-with-page_pgdat.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Yajun Deng <yajun.deng@xxxxxxxxx>
Subject: mm: simplify page_zone() and get_deferred_split_queue() with page_pgdat()
Date: Tue, 1 Nov 2022 10:32:19 +0800
page_zone() is too long, we can shorten it by page_pgdat().
There is no need define pgdat variable if memcg isn't NULL, so use
page_pgdat() to simplify get_deferred_split_queue().
Link: https://lkml.kernel.org/r/20221101023219.752365-1-yajun.deng@xxxxxxxxx
Signed-off-by: Yajun Deng <yajun.deng@xxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 8 ++++----
mm/huge_memory.c | 7 ++-----
2 files changed, 6 insertions(+), 9 deletions(-)
--- a/include/linux/mm.h~mm-simplify-page_zone-and-get_deferred_split_queue-with-page_pgdat
+++ a/include/linux/mm.h
@@ -1448,14 +1448,14 @@ static inline void page_kasan_tag_reset(
#endif /* CONFIG_KASAN_SW_TAGS || CONFIG_KASAN_HW_TAGS */
-static inline struct zone *page_zone(const struct page *page)
+static inline pg_data_t *page_pgdat(const struct page *page)
{
- return &NODE_DATA(page_to_nid(page))->node_zones[page_zonenum(page)];
+ return NODE_DATA(page_to_nid(page));
}
-static inline pg_data_t *page_pgdat(const struct page *page)
+static inline struct zone *page_zone(const struct page *page)
{
- return NODE_DATA(page_to_nid(page));
+ return &page_pgdat(page)->node_zones[page_zonenum(page)];
}
static inline struct zone *folio_zone(const struct folio *folio)
--- a/mm/huge_memory.c~mm-simplify-page_zone-and-get_deferred_split_queue-with-page_pgdat
+++ a/mm/huge_memory.c
@@ -562,19 +562,16 @@ pmd_t maybe_pmd_mkwrite(pmd_t pmd, struc
static inline struct deferred_split *get_deferred_split_queue(struct page *page)
{
struct mem_cgroup *memcg = page_memcg(compound_head(page));
- struct pglist_data *pgdat = NODE_DATA(page_to_nid(page));
if (memcg)
return &memcg->deferred_split_queue;
else
- return &pgdat->deferred_split_queue;
+ return &page_pgdat(page)->deferred_split_queue;
}
#else
static inline struct deferred_split *get_deferred_split_queue(struct page *page)
{
- struct pglist_data *pgdat = NODE_DATA(page_to_nid(page));
-
- return &pgdat->deferred_split_queue;
+ return &page_pgdat(page)->deferred_split_queue;
}
#endif
_
Patches currently in -mm which might be from yajun.deng@xxxxxxxxx are
mm-simplify-page_zone-and-get_deferred_split_queue-with-page_pgdat.patch
