linux-toradex.git/mm/balloon_compaction.c, branch v6.12-rc1

mm: remove MIGRATE_SYNC_NO_COPY mode

2024-07-04T02:30:00+00:00

Commit 2916ecc0f9d4 ("mm/migrate: new migrate mode MIGRATE_SYNC_NO_COPY")
introduce a new MIGRATE_SYNC_NO_COPY mode to allow to offload the copy to
a device DMA engine, which is only used __migrate_device_pages() to decide
whether or not copy the old page, and the MIGRATE_SYNC_NO_COPY mode only
set in hmm, as the MIGRATE_SYNC_NO_COPY set is removed by previous
cleanup, it seems that we could remove the unnecessary
MIGRATE_SYNC_NO_COPY.

Link: https://lkml.kernel.org/r/20240524052843.182275-6-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang 
Reviewed-by: Jane Chu 
Cc: Alistair Popple 
Cc: Benjamin LaHaise 
Cc: David Hildenbrand 
Cc: Hugh Dickins 
Cc: Jérôme Glisse 
Cc: Jiaqi Yan 
Cc: Matthew Wilcox (Oracle) 
Cc: Miaohe Lin 
Cc: Muchun Song 
Cc: Naoya Horiguchi 
Cc: Tony Luck 
Cc: Vishal Moola (Oracle) 
Cc: Zi Yan 
Signed-off-by: Andrew Morton

mm: Convert all PageMovable users to movable_operations

2022-08-02T16:34:03+00:00

These drivers are rather uncomfortably hammered into the
address_space_operations hole.  They aren't filesystems and don't behave
like filesystems.  They just need their own movable_operations structure,
which we can point to directly from page->mapping.

Signed-off-by: Matthew Wilcox (Oracle)

mm/balloon_compaction: make balloon page compaction callbacks static

2022-03-28T20:52:57+00:00

Since commit b1123ea6d3b3 ("mm: balloon: use general non-lru movable page
feature"), these functions are called via balloon_aops callbacks. They're
not called directly outside this file. So make them static and clean up
the relevant code.

Signed-off-by: Miaohe Lin 
Link: https://lore.kernel.org/r/20220125132221.2220-1-linmiaohe@huawei.com
Signed-off-by: Michael S. Tsirkin 
Reviewed-by: Muchun Song

mm: fix typos in comments

2021-05-07T07:26:35+00:00

Fix ~94 single-word typos in locking code comments, plus a few
very obvious grammar mistakes.

Link: https://lkml.kernel.org/r/20210322212624.GA1963421@gmail.com
Link: https://lore.kernel.org/r/20210322205203.GB1959563@gmail.com
Signed-off-by: Ingo Molnar 
Reviewed-by: Matthew Wilcox (Oracle) 
Reviewed-by: Randy Dunlap 
Cc: Bhaskar Chowdhury 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm/balloon_compaction: suppress allocation warnings

2019-09-04T11:42:01+00:00

There is no reason to print warnings when balloon page allocation fails,
as they are expected and can be handled gracefully.  Since VMware
balloon now uses balloon-compaction infrastructure, and suppressed these
warnings before, it is also beneficial to suppress these warnings to
keep the same behavior that the balloon had before.

Cc: Jason Wang 
Signed-off-by: Nadav Amit 
Signed-off-by: Michael S. Tsirkin 
Reviewed-by: David Hildenbrand

balloon: fix up comments

2019-07-22T15:19:26+00:00

Lots of comments bitrotted. Fix them up.

Fixes: 418a3ab1e778 (mm/balloon_compaction: List interfaces)
Reviewed-by: Wei Wang 
Signed-off-by: Michael S. Tsirkin 
Reviewed-by: Ralph Campbell 
Acked-by: Nadav Amit

mm/balloon_compaction: avoid duplicate page removal

2019-07-22T15:19:26+00:00

A #GP is reported in the guest when requesting balloon inflation via
virtio-balloon. The reason is that the virtio-balloon driver has
removed the page from its internal page list (via balloon_page_pop),
but balloon_page_enqueue_one also calls "list_del"  to do the removal.
This is necessary when it's used from balloon_page_enqueue_list, but
not from balloon_page_enqueue.

Move list_del to balloon_page_enqueue, and update comments accordingly.

Fixes: 418a3ab1e778 (mm/balloon_compaction: List interfaces)
Signed-off-by: Wei Wang 
Signed-off-by: Michael S. Tsirkin

Merge 5.2-rc4 into char-misc-next

2019-06-09T07:11:21+00:00

We want the char/misc driver fixes in here as well.

Signed-off-by: Greg Kroah-Hartman

mm/balloon_compaction: List interfaces

2019-05-24T18:19:17+00:00

Introduce interfaces for ballooning enqueueing and dequeueing of a list
of pages. These interfaces reduce the overhead of storing and restoring
IRQs by batching the operations. In addition they do not panic if the
list of pages is empty.

Cc: Jason Wang 
Cc: linux-mm@kvack.org
Cc: virtualization@lists.linux-foundation.org
Acked-by: Michael S. Tsirkin 
Reviewed-by: Xavier Deguillard 
Signed-off-by: Nadav Amit 
Signed-off-by: Greg Kroah-Hartman

treewide: Add SPDX license identifier for missed files

2019-05-21T08:50:45+00:00

Add SPDX license identifiers to all files which:

 - Have no license information of any form

 - Have EXPORT_.*_SYMBOL_GPL inside which was used in the
   initial scan/conversion to ignore the file

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman