From: Oscar Salvador <osalvador@suse.de>
To: akpm@linux-foundation.org
Cc: aris@ruivo.org, naoya.horiguchi@nec.com, mhocko@kernel.org,
tony.luck@intel.com, cai@lca.pw, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, Oscar Salvador <osalvador@suse.de>
Subject: [PATCH v7 02/14] mm, hwpoison: remove recalculating hpage
Date: Tue, 22 Sep 2020 15:56:38 +0200 [thread overview]
Message-ID: <20200922135650.1634-3-osalvador@suse.de> (raw)
In-Reply-To: <20200922135650.1634-1-osalvador@suse.de>
From: Naoya Horiguchi <naoya.horiguchi@nec.com>
hpage is never used after try_to_split_thp_page() in memory_failure(), so
we don't have to update hpage. So let's not recalculate/use hpage.
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Suggested-by: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
---
mm/memory-failure.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index b0eabc312381..0e6edffa91a9 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1341,7 +1341,6 @@ int memory_failure(unsigned long pfn, int flags)
}
unlock_page(p);
VM_BUG_ON_PAGE(!page_count(p), p);
- hpage = compound_head(p);
}
/*
@@ -1413,11 +1412,8 @@ int memory_failure(unsigned long pfn, int flags)
/*
* Now take care of user space mappings.
* Abort on fail: __delete_from_page_cache() assumes unmapped page.
- *
- * When the raw error page is thp tail page, hpage points to the raw
- * page after thp split.
*/
- if (!hwpoison_user_mappings(p, pfn, flags, &hpage)) {
+ if (!hwpoison_user_mappings(p, pfn, flags, &p)) {
action_result(pfn, MF_MSG_UNMAP_FAILED, MF_IGNORED);
res = -EBUSY;
goto out;
--
2.26.2
next prev parent reply other threads:[~2020-09-22 13:58 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-22 13:56 [PATCH v7 00/14] HWPOISON: soft offline rework Oscar Salvador
2020-09-22 13:56 ` [PATCH v7 01/14] mm,hwpoison: cleanup unused PageHuge() check Oscar Salvador
2020-09-22 13:56 ` Oscar Salvador [this message]
2020-09-22 13:56 ` [PATCH v7 03/14] mm,hwpoison-inject: don't pin for hwpoison_filter Oscar Salvador
2020-09-22 13:56 ` [PATCH v7 04/14] mm,hwpoison: unexport get_hwpoison_page and make it static Oscar Salvador
2020-09-23 7:24 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-22 13:56 ` [PATCH v7 05/14] mm,hwpoison: refactor madvise_inject_error Oscar Salvador
2020-09-23 7:24 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-22 13:56 ` [PATCH v7 06/14] mm,hwpoison: kill put_hwpoison_page Oscar Salvador
2020-09-23 7:24 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-22 13:56 ` [PATCH v7 07/14] mm,hwpoison: unify THP handling for hard and soft offline Oscar Salvador
2020-09-23 7:26 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-22 13:56 ` [PATCH v7 08/14] mm,hwpoison: rework soft offline for free pages Oscar Salvador
2020-09-23 7:27 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-22 13:56 ` [PATCH v7 09/14] mm,hwpoison: rework soft offline for in-use pages Oscar Salvador
2020-09-23 7:30 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-22 13:56 ` [PATCH v7 10/14] mm,hwpoison: refactor soft_offline_huge_page and __soft_offline_page Oscar Salvador
2020-09-23 7:35 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-22 13:56 ` [PATCH v7 11/14] mm,hwpoison: return 0 if the page is already poisoned in soft-offline Oscar Salvador
2020-09-23 7:39 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-22 13:56 ` [PATCH v7 12/14] mm,hwpoison: introduce MF_MSG_UNSPLIT_THP Oscar Salvador
2020-09-22 13:56 ` [PATCH v7 13/14] mm,hwpoison: double-check page count in __get_any_page() Oscar Salvador
2020-09-22 13:56 ` [PATCH v7 14/14] mm,hwpoison: Try to narrow window race for free pages Oscar Salvador
2020-09-23 7:40 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-22 17:03 ` [PATCH v7 00/14] HWPOISON: soft offline rework Andrew Morton
2020-09-22 17:56 ` osalvador
2020-09-23 13:29 ` Aristeu Rozanski
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