From: Vlastimil Babka <vbabka@suse.cz>
To: Suren Baghdasaryan <surenb@google.com>, akpm@linux-foundation.org
Cc: willy@infradead.org, liam.howlett@oracle.com,
lorenzo.stoakes@oracle.com, mhocko@suse.com, hannes@cmpxchg.org,
mjguzik@gmail.com, oliver.sang@intel.com,
mgorman@techsingularity.net, david@redhat.com, peterx@redhat.com,
oleg@redhat.com, dave@stgolabs.net, paulmck@kernel.org,
brauner@kernel.org, dhowells@redhat.com, hdanton@sina.com,
hughd@google.com, minchan@google.com, jannh@google.com,
shakeel.butt@linux.dev, souravpanda@google.com,
pasha.tatashin@soleen.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, kernel-team@android.com
Subject: Re: [PATCH 2/4] mm: move per-vma lock into vm_area_struct
Date: Tue, 12 Nov 2024 16:57:47 +0100 [thread overview]
Message-ID: <07a72c38-22f5-4b99-9d74-0877eaf2bee2@suse.cz> (raw)
In-Reply-To: <20241111205506.3404479-3-surenb@google.com>
On 11/11/24 21:55, Suren Baghdasaryan wrote:
> @@ -511,7 +476,6 @@ void __vm_area_free(struct vm_area_struct *vma)
> {
> vma_numab_state_free(vma);
> free_anon_vma_name(vma);
> - vma_lock_free(vma);
> kmem_cache_free(vm_area_cachep, vma);
> }
Have you investigated if this allows to perform vma_numab_state_free() and
free_anon_vma_name() immediately, and only kfree_rcu() the vma itself,
instead of performing all this in a call_rcu() callback?
Of course if we succeed converting vma's to SLAB_TYPESAFE_RCU this immediate
freeing of numab state and anon_vma_name would be implied, but maybe it's an
useful intermediate step on its own.
next prev parent reply other threads:[~2024-11-12 15:57 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-11 20:55 [PATCH 0/4] " Suren Baghdasaryan
2024-11-11 20:55 ` [PATCH 1/4] mm: introduce vma_start_read_locked{_nested} helpers Suren Baghdasaryan
2024-11-11 20:55 ` [PATCH 2/4] mm: move per-vma lock into vm_area_struct Suren Baghdasaryan
2024-11-12 9:36 ` kernel test robot
2024-11-12 9:47 ` kernel test robot
2024-11-12 10:18 ` kernel test robot
2024-11-12 15:57 ` Vlastimil Babka [this message]
2024-11-12 16:08 ` Suren Baghdasaryan
2024-11-12 16:58 ` Suren Baghdasaryan
2024-11-11 20:55 ` [PATCH 3/4] mm: replace rw_semaphore with atomic_t in vma_lock Suren Baghdasaryan
2024-11-12 0:06 ` Andrew Morton
2024-11-12 0:52 ` Suren Baghdasaryan
2024-11-12 0:35 ` Davidlohr Bueso
2024-11-12 0:59 ` Suren Baghdasaryan
2024-11-12 4:58 ` Matthew Wilcox
2024-11-12 15:18 ` Suren Baghdasaryan
2024-12-10 22:38 ` Peter Zijlstra
2024-12-10 23:37 ` Suren Baghdasaryan
2024-12-11 8:25 ` Peter Zijlstra
2024-12-11 15:20 ` Suren Baghdasaryan
2024-12-12 3:01 ` Suren Baghdasaryan
2024-12-12 9:16 ` Peter Zijlstra
2024-12-12 14:17 ` Suren Baghdasaryan
2024-12-12 14:19 ` Suren Baghdasaryan
2024-12-13 4:48 ` Suren Baghdasaryan
2024-12-13 9:57 ` Peter Zijlstra
2024-12-13 17:45 ` Suren Baghdasaryan
2024-12-13 18:19 ` Matthew Wilcox
2024-12-13 18:35 ` Peter Zijlstra
2024-12-13 18:37 ` Suren Baghdasaryan
2024-12-16 19:32 ` Suren Baghdasaryan
2024-12-13 9:22 ` Peter Zijlstra
2024-12-13 17:41 ` Suren Baghdasaryan
2024-11-11 20:55 ` [PATCH 4/4] mm: move lesser used vma_area_struct members into the last cacheline Suren Baghdasaryan
2024-11-12 10:07 ` Vlastimil Babka
2024-11-12 15:45 ` Suren Baghdasaryan
2024-11-11 21:41 ` [PATCH 0/4] move per-vma lock into vm_area_struct Suren Baghdasaryan
2024-11-12 2:48 ` Liam R. Howlett
2024-11-12 3:27 ` Suren Baghdasaryan
2024-11-11 22:18 ` Davidlohr Bueso
2024-11-11 23:19 ` Suren Baghdasaryan
2024-11-12 0:03 ` Davidlohr Bueso
2024-11-12 0:43 ` Suren Baghdasaryan
2024-11-12 0:11 ` Andrew Morton
2024-11-12 0:48 ` Suren Baghdasaryan
2024-11-12 2:35 ` Liam R. Howlett
2024-11-12 3:23 ` Suren Baghdasaryan
2024-11-12 9:39 ` Lorenzo Stoakes
2024-11-12 15:38 ` Suren Baghdasaryan
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