From: Ralph Campbell <rcampbell@nvidia.com>
To: <linux-mm@kvack.org>
Cc: <linux-kernel@vger.kernel.org>, Ralph Campbell <rcampbell@nvidia.com>
Subject: [PATCH v2 0/3] mm/hmm: fixes for device private page migration
Date: Fri, 19 Jul 2019 12:29:52 -0700 [thread overview]
Message-ID: <20190719192955.30462-1-rcampbell@nvidia.com> (raw)
Testing the latest linux git tree turned up a few bugs with page
migration to and from ZONE_DEVICE private and anonymous pages.
Hopefully it clarifies how ZONE_DEVICE private struct page uses
the same mapping and index fields from the source anonymous page
mapping.
Changes from v1 to v2:
Patch #1 merges ZONE_DEVICE page struct into a union of lru and
a struct for ZONE_DEVICE fields. So, basically a new patch.
Patch #2 updates the code comments for clearing page->mapping as
suggested by John Hubbard.
Patch #3 is unchanged from the previous posting but note that
Andrew Morton has v1 queued in v5.2-mmotm-2019-07-18-16-08.
Ralph Campbell (3):
mm: document zone device struct page reserved fields
mm/hmm: fix ZONE_DEVICE anon page mapping reuse
mm/hmm: Fix bad subpage pointer in try_to_unmap_one
include/linux/mm_types.h | 9 ++++++++-
kernel/memremap.c | 4 ++++
mm/rmap.c | 1 +
3 files changed, 13 insertions(+), 1 deletion(-)
--
2.20.1
next reply other threads:[~2019-07-19 19:30 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-19 19:29 Ralph Campbell [this message]
2019-07-19 19:29 ` [PATCH v2 1/3] mm: document zone device struct page field usage Ralph Campbell
2019-07-19 21:43 ` John Hubbard
2019-07-21 15:05 ` Randy Dunlap
2019-07-21 16:02 ` Matthew Wilcox
2019-07-22 5:13 ` Ira Weiny
2019-07-22 11:08 ` Matthew Wilcox
2019-07-23 21:25 ` Ralph Campbell
2019-07-23 21:39 ` Weiny, Ira
2019-07-22 9:36 ` Christoph Hellwig
2019-07-22 9:37 ` Christoph Hellwig
2019-07-19 19:29 ` [PATCH v2 2/3] mm/hmm: fix ZONE_DEVICE anon page mapping reuse Ralph Campbell
2019-07-19 21:45 ` John Hubbard
2019-07-22 9:38 ` Christoph Hellwig
2019-07-19 19:29 ` [PATCH v2 3/3] mm/hmm: Fix bad subpage pointer in try_to_unmap_one Ralph Campbell
2019-07-20 12:23 ` Sasha Levin
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