[PATCH v2 0/3] followups to debug_pagealloc improvements through page_owner

Vlastimil Babka
2019-09-30T12:29:32Z

Changes since v1 [3]:

- Kirill suggested further decoupling of freeing stack capture from KASAN and
debug_pagealloc. Also the stackdepot handle is now only allocated in page_ext
when actually used (it was simpler than I initially thought). As that was a
large change, I've dropped Reviewed-by from Andrey Ryabinin.
- More minor changes suggested by Kirill.

These are followups to [1] which made it to Linus meanwhile. Patches 1 and 3
are based on Kirill's review, patch 2 on KASAN request [2]. It would be nice
if all of this made it to 5.4 with [1] already there (or at least Patch 1).

[1] https://lore.kernel.org/linux-mm/20190820131828.22684-1-vbabka@suse.cz/
[2] https://lore.kernel.org/linux-arm-kernel/20190911083921.4158-1-walter-zh.wu@mediatek.com/
[3] https://lore.kernel.org/r/20190925143056.25853-1-vbabka%40suse.cz

Vlastimil Babka (3):
mm, page_owner: fix off-by-one error in __set_page_owner_handle()
mm, page_owner: decouple freeing stack trace from debug_pagealloc
mm, page_owner: rename flag indicating that page is allocated

.../admin-guide/kernel-parameters.txt | 8 ++
Documentation/dev-tools/kasan.rst | 3 +
include/linux/page_ext.h | 10 +-
include/linux/page_owner.h | 1 +
mm/page_ext.c | 24 ++--
mm/page_owner.c | 117 ++++++++++++------
6 files changed, 109 insertions(+), 54 deletions(-)

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2.23.0