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Message-Id: <1541746035-13408-8-git-send-email-n-horiguchi@ah.jp.nec.com>
Date: Fri, 9 Nov 2018 15:47:11 +0900
From: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
To: linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc: Michal Hocko <mhocko@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Mike Kravetz <mike.kravetz@...cle.com>,
xishi.qiuxishi@...baba-inc.com,
Laurent Dufour <ldufour@...ux.vnet.ibm.com>
Subject: [RFC][PATCH v1 07/11] mm: remove flag argument from soft offline functions
The argument @flag no longer affects the behavior of soft_offline_page()
and its variants, so let's remove them.
Signed-off-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
---
drivers/base/memory.c | 2 +-
include/linux/mm.h | 2 +-
mm/madvise.c | 2 +-
mm/memory-failure.c | 27 +++++++++++++--------------
4 files changed, 16 insertions(+), 17 deletions(-)
diff --git v4.19-mmotm-2018-10-30-16-08/drivers/base/memory.c v4.19-mmotm-2018-10-30-16-08_patched/drivers/base/memory.c
index 0e59856..4a554a5 100644
--- v4.19-mmotm-2018-10-30-16-08/drivers/base/memory.c
+++ v4.19-mmotm-2018-10-30-16-08_patched/drivers/base/memory.c
@@ -548,7 +548,7 @@ store_soft_offline_page(struct device *dev,
pfn >>= PAGE_SHIFT;
if (!pfn_valid(pfn))
return -ENXIO;
- ret = soft_offline_page(pfn_to_page(pfn), 0);
+ ret = soft_offline_page(pfn_to_page(pfn));
return ret == 0 ? count : ret;
}
diff --git v4.19-mmotm-2018-10-30-16-08/include/linux/mm.h v4.19-mmotm-2018-10-30-16-08_patched/include/linux/mm.h
index f85b450..6c496da 100644
--- v4.19-mmotm-2018-10-30-16-08/include/linux/mm.h
+++ v4.19-mmotm-2018-10-30-16-08_patched/include/linux/mm.h
@@ -2738,7 +2738,7 @@ extern int sysctl_memory_failure_early_kill;
extern int sysctl_memory_failure_recovery;
extern void shake_page(struct page *p, int access);
extern atomic_long_t num_poisoned_pages __read_mostly;
-extern int soft_offline_page(struct page *page, int flags);
+extern int soft_offline_page(struct page *page);
#ifdef CONFIG_MEMORY_FAILURE
/*
diff --git v4.19-mmotm-2018-10-30-16-08/mm/madvise.c v4.19-mmotm-2018-10-30-16-08_patched/mm/madvise.c
index 9fa0225..86453f3 100644
--- v4.19-mmotm-2018-10-30-16-08/mm/madvise.c
+++ v4.19-mmotm-2018-10-30-16-08_patched/mm/madvise.c
@@ -660,7 +660,7 @@ static int madvise_inject_error(int behavior,
pr_info("Soft offlining pfn %#lx at process virtual address %#lx\n",
pfn, start);
- ret = soft_offline_page(page, 0);
+ ret = soft_offline_page(page);
if (ret)
return ret;
continue;
diff --git v4.19-mmotm-2018-10-30-16-08/mm/memory-failure.c v4.19-mmotm-2018-10-30-16-08_patched/mm/memory-failure.c
index ed347f8..869ff8f 100644
--- v4.19-mmotm-2018-10-30-16-08/mm/memory-failure.c
+++ v4.19-mmotm-2018-10-30-16-08_patched/mm/memory-failure.c
@@ -1482,7 +1482,7 @@ static void memory_failure_work_func(struct work_struct *work)
if (!gotten)
break;
if (entry.flags & MF_SOFT_OFFLINE)
- soft_offline_page(pfn_to_page(entry.pfn), entry.flags);
+ soft_offline_page(pfn_to_page(entry.pfn));
else
memory_failure(entry.pfn, entry.flags);
}
@@ -1615,7 +1615,7 @@ static struct page *new_page(struct page *p, unsigned long private)
* that is not free, and 1 for any other page type.
* For 1 the page is returned with increased page count, otherwise not.
*/
-static int __get_any_page(struct page *p, unsigned long pfn, int flags)
+static int __get_any_page(struct page *p, unsigned long pfn)
{
int ret;
@@ -1642,9 +1642,9 @@ static int __get_any_page(struct page *p, unsigned long pfn, int flags)
return ret;
}
-static int get_any_page(struct page *page, unsigned long pfn, int flags)
+static int get_any_page(struct page *page, unsigned long pfn)
{
- int ret = __get_any_page(page, pfn, flags);
+ int ret = __get_any_page(page, pfn);
if (ret == 1 && !PageHuge(page) &&
!PageLRU(page) && !__PageMovable(page)) {
@@ -1657,7 +1657,7 @@ static int get_any_page(struct page *page, unsigned long pfn, int flags)
/*
* Did it turn free?
*/
- ret = __get_any_page(page, pfn, 0);
+ ret = __get_any_page(page, pfn);
if (ret == 1 && !PageLRU(page)) {
/* Drop page reference which is from __get_any_page() */
put_hwpoison_page(page);
@@ -1669,7 +1669,7 @@ static int get_any_page(struct page *page, unsigned long pfn, int flags)
return ret;
}
-static int soft_offline_huge_page(struct page *page, int flags)
+static int soft_offline_huge_page(struct page *page)
{
int ret;
unsigned long pfn = page_to_pfn(page);
@@ -1730,7 +1730,7 @@ static int soft_offline_huge_page(struct page *page, int flags)
return ret;
}
-static int __soft_offline_page(struct page *page, int flags)
+static int __soft_offline_page(struct page *page)
{
int ret;
unsigned long pfn = page_to_pfn(page);
@@ -1815,7 +1815,7 @@ static int __soft_offline_page(struct page *page, int flags)
return ret;
}
-static int soft_offline_in_use_page(struct page *page, int flags)
+static int soft_offline_in_use_page(struct page *page)
{
int ret;
int mt;
@@ -1847,9 +1847,9 @@ static int soft_offline_in_use_page(struct page *page, int flags)
mt = get_pageblock_migratetype(page);
set_pageblock_migratetype(page, MIGRATE_ISOLATE);
if (PageHuge(page))
- ret = soft_offline_huge_page(page, flags);
+ ret = soft_offline_huge_page(page);
else
- ret = __soft_offline_page(page, flags);
+ ret = __soft_offline_page(page);
set_pageblock_migratetype(page, mt);
return ret;
}
@@ -1873,7 +1873,6 @@ static int soft_offline_free_page(struct page *page)
/**
* soft_offline_page - Soft offline a page.
* @page: page to offline
- * @flags: flags. Same as memory_failure().
*
* Returns 0 on success, otherwise negated errno.
*
@@ -1892,7 +1891,7 @@ static int soft_offline_free_page(struct page *page)
* This is not a 100% solution for all memory, but tries to be
* ``good enough'' for the majority of memory.
*/
-int soft_offline_page(struct page *page, int flags)
+int soft_offline_page(struct page *page)
{
int ret;
unsigned long pfn = page_to_pfn(page);
@@ -1909,11 +1908,11 @@ int soft_offline_page(struct page *page, int flags)
}
get_online_mems();
- ret = get_any_page(page, pfn, flags);
+ ret = get_any_page(page, pfn);
put_online_mems();
if (ret > 0)
- ret = soft_offline_in_use_page(page, flags);
+ ret = soft_offline_in_use_page(page);
else if (ret == 0)
ret = soft_offline_free_page(page);
--
2.7.0
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