From: Chih-En Lin <shiyn.lin@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Qi Zheng <zhengqi.arch@bytedance.com>,
David Hildenbrand <david@redhat.com>,
Matthew Wilcox <willy@infradead.org>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
John Hubbard <jhubbard@nvidia.com>, Nadav Amit <namit@vmware.com>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
Yang Shi <shy828301@gmail.com>, Peter Xu <peterx@redhat.com>,
Zach O'Keefe <zokeefe@google.com>,
"Liam R . Howlett" <Liam.Howlett@Oracle.com>,
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Xianting Tian <xianting.tian@linux.alibaba.com>,
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Suren Baghdasaryan <surenb@google.com>,
Barry Song <baohua@kernel.org>,
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Suleiman Souhlal <suleiman@google.com>,
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Tong Tiangen <tongtiangen@huawei.com>,
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Anshuman Khandual <anshuman.khandual@arm.com>,
Vlastimil Babka <vbabka@suse.cz>, Hugh Dickins <hughd@google.com>,
Minchan Kim <minchan@kernel.org>,
Miaohe Lin <linmiaohe@huawei.com>,
Gautam Menghani <gautammenghani201@gmail.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Mark Brown <broonie@kernel.org>, Will Deacon <will@kernel.org>,
"Eric W . Biederman" <ebiederm@xmission.com>,
Thomas Gleixner <tglx@linutronix.de>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Andy Lutomirski <luto@kernel.org>,
Fenghua Yu <fenghua.yu@intel.com>,
Barret Rhoden <brho@google.com>,
Davidlohr Bueso <dave@stgolabs.net>,
"Jason A . Donenfeld" <Jason@zx2c4.com>,
Dinglan Peng <peng301@purdue.edu>,
Pedro Fonseca <pfonseca@purdue.edu>,
Jim Huang <jserv@ccns.ncku.edu.tw>,
Huichun Feng <foxhoundsk.tw@gmail.com>,
Chih-En Lin <shiyn.lin@gmail.com>
Subject: [PATCH v3 11/14] mm/migrate_device: Support COW PTE
Date: Tue, 20 Dec 2022 15:27:40 +0800 [thread overview]
Message-ID: <20221220072743.3039060-12-shiyn.lin@gmail.com> (raw)
In-Reply-To: <20221220072743.3039060-1-shiyn.lin@gmail.com>
Break COW PTE before collecting the pages in COW-ed PTE.
Signed-off-by: Chih-En Lin <shiyn.lin@gmail.com>
---
mm/migrate_device.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mm/migrate_device.c b/mm/migrate_device.c
index 721b2365dbca9..f6d67bd9629f5 100644
--- a/mm/migrate_device.c
+++ b/mm/migrate_device.c
@@ -106,6 +106,8 @@ static int migrate_vma_collect_pmd(pmd_t *pmdp,
}
}
+ if (!break_cow_pte_range(vma, pmdp, start, end))
+ return migrate_vma_collect_skip(start, end, walk);
if (unlikely(pmd_bad(*pmdp)))
return migrate_vma_collect_skip(start, end, walk);
--
2.37.3
next prev parent reply other threads:[~2022-12-20 7:27 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-20 7:27 [PATCH v3 00/14] Introduce Copy-On-Write to Page Table Chih-En Lin
2022-12-20 7:27 ` [PATCH v3 01/14] mm: Allow user to control COW PTE via prctl Chih-En Lin
2022-12-20 7:27 ` [PATCH v3 02/14] mm: Add Copy-On-Write PTE to fork() Chih-En Lin
2022-12-20 10:59 ` kernel test robot
2022-12-20 12:42 ` kernel test robot
2022-12-20 7:27 ` [PATCH v3 03/14] mm: Add break COW PTE fault and helper functions Chih-En Lin
2022-12-20 12:00 ` kernel test robot
2022-12-20 7:27 ` [PATCH v3 04/14] mm/rmap: Break COW PTE in rmap walking Chih-En Lin
2022-12-26 9:40 ` Barry Song
2022-12-26 10:59 ` Chih-En Lin
2022-12-27 1:15 ` Barry Song
2022-12-27 2:40 ` Chih-En Lin
2022-12-20 7:27 ` [PATCH v3 05/14] mm/khugepaged: Break COW PTE before scanning pte Chih-En Lin
2022-12-20 7:27 ` [PATCH v3 06/14] mm/ksm: Break COW PTE before modify shared PTE Chih-En Lin
2022-12-20 7:27 ` [PATCH v3 07/14] mm/madvise: Handle COW-ed PTE with madvise() Chih-En Lin
2022-12-20 7:27 ` [PATCH v3 08/14] mm/gup: Break COW PTE in follow_pfn_pte() Chih-En Lin
2022-12-20 7:27 ` [PATCH v3 09/14] mm/mprotect: Break COW PTE before changing protection Chih-En Lin
2022-12-20 7:27 ` [PATCH v3 10/14] mm/userfaultfd: Support COW PTE Chih-En Lin
2022-12-20 7:27 ` Chih-En Lin [this message]
2022-12-20 11:50 ` [PATCH v3 11/14] mm/migrate_device: " kernel test robot
2022-12-20 14:23 ` kernel test robot
2022-12-20 7:27 ` [PATCH v3 12/14] fs/proc: Support COW PTE with clear_refs_write Chih-En Lin
2022-12-20 7:27 ` [PATCH v3 13/14] events/uprobes: Break COW PTE before replacing page Chih-En Lin
2022-12-20 7:27 ` [PATCH v3 14/14] mm: fork: Enable COW PTE to fork system call Chih-En Lin
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