From: Vlastimil Babka <vbabka@suse.cz>
To: Rongwei Wang <rongwei.wang@linux.alibaba.com>,
Christoph Lameter <cl@linux.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
David Rientjes <rientjes@google.com>,
Pekka Enberg <penberg@kernel.org>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>,
Roman Gushchin <roman.gushchin@linux.dev>,
linux-mm@kvack.org,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Thomas Gleixner <tglx@linutronix.de>,
Mike Galbraith <efault@gmx.de>, Vlastimil Babka <vbabka@suse.cz>
Subject: [PATCH v2 0/5] mm/slub: fix validation races and cleanup locking
Date: Tue, 23 Aug 2022 19:03:55 +0200 [thread overview]
Message-ID: <20220823170400.26546-1-vbabka@suse.cz> (raw)
This series builds on the validation races fix posted previously [1]
that became patch 2 here and contains all the details in its
description.
Thanks to Hyeonggon Yoo's observation, patch 3 removes more slab_lock()
usage that became unnecessary after patch 2.
This made it possible to further simplify locking code in patches 4 and
5. Since those are related to PREEMPT_RT, I'm CCing relevant people on
this series.
Changes since v1 [2]:
- add acks/reviews from Hyeonggon and David
- minor fixes to patch 2 as reported by Hyeonggon
- patch 5 reworked to rely on disabled preemption by bit_spin_lock()
which should be sufficient without disabled interrupts on RT
git version:
https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/linux.git/log/?h=slub-validate-fix-v2r2
I plan to add this series to slab.git for-next in few days.
[1] https://lore.kernel.org/all/20220809140043.9903-1-vbabka@suse.cz/
[2] https://lore.kernel.org/all/20220812091426.18418-1-vbabka@suse.cz/
Vlastimil Babka (5):
mm/slub: move free_debug_processing() further
mm/slub: restrict sysfs validation to debug caches and make it safe
mm/slub: remove slab_lock() usage for debug operations
mm/slub: convert object_map_lock to non-raw spinlock
mm/slub: simplify __cmpxchg_double_slab() and slab_[un]lock()
mm/slub.c | 417 ++++++++++++++++++++++++++++++++----------------------
1 file changed, 251 insertions(+), 166 deletions(-)
--
2.37.2
next reply other threads:[~2022-08-23 17:04 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-23 17:03 Vlastimil Babka [this message]
2022-08-23 17:03 ` [PATCH v2 1/5] mm/slub: move free_debug_processing() further Vlastimil Babka
2022-08-23 17:03 ` [PATCH v2 2/5] mm/slub: restrict sysfs validation to debug caches and make it safe Vlastimil Babka
2022-08-24 4:41 ` Hyeonggon Yoo
2022-08-23 17:03 ` [PATCH v2 3/5] mm/slub: remove slab_lock() usage for debug operations Vlastimil Babka
2022-08-23 17:03 ` [PATCH v2 4/5] mm/slub: convert object_map_lock to non-raw spinlock Vlastimil Babka
2022-08-24 15:53 ` Sebastian Andrzej Siewior
2022-08-23 17:04 ` [PATCH v2 5/5] mm/slub: simplify __cmpxchg_double_slab() and slab_[un]lock() Vlastimil Babka
2022-08-24 10:24 ` Hyeonggon Yoo
2022-08-24 11:51 ` Vlastimil Babka
2022-08-24 12:45 ` Hyeonggon Yoo
2022-08-24 16:31 ` Sebastian Andrzej Siewior
2022-08-24 13:04 ` Hyeonggon Yoo
2022-08-25 12:41 ` Vlastimil Babka
2022-08-24 16:25 ` Sebastian Andrzej Siewior
2022-08-25 12:59 ` Vlastimil Babka
2022-08-25 7:51 ` [PATCH 6/5] slub: Make PREEMPT_RT support less convoluted Sebastian Andrzej Siewior
2022-08-25 8:41 ` Vlastimil Babka
2022-08-25 8:49 ` Hyeonggon Yoo
2022-08-25 13:16 ` [PATCH v2 0/5] mm/slub: fix validation races and cleanup locking Vlastimil Babka
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