From: Vlastimil Babka <vbabka@suse.cz>
To: Suren Baghdasaryan <surenb@google.com>, akpm@linux-foundation.org
Cc: peterz@infradead.org, willy@infradead.org,
liam.howlett@oracle.com, lorenzo.stoakes@oracle.com,
david.laight.linux@gmail.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, lokeshgidra@google.com, minchan@google.com,
jannh@google.com, shakeel.butt@linux.dev, souravpanda@google.com,
pasha.tatashin@soleen.com, klarasmodin@gmail.com,
richard.weiyang@gmail.com, corbet@lwn.net,
linux-doc@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, kernel-team@android.com
Subject: Re: [PATCH v10 07/18] mm: allow vma_start_read_locked/vma_start_read_locked_nested to fail
Date: Fri, 21 Feb 2025 12:27:44 +0100 [thread overview]
Message-ID: <46163fb7-2bc2-456d-9e1a-02657293037a@suse.cz> (raw)
In-Reply-To: <20250213224655.1680278-8-surenb@google.com>
On 2/13/25 23:46, Suren Baghdasaryan wrote:
> With upcoming replacement of vm_lock with vm_refcnt, we need to handle a
> possibility of vma_start_read_locked/vma_start_read_locked_nested failing
> due to refcount overflow. Prepare for such possibility by changing these
> APIs and adjusting their users.
>
> Signed-off-by: Suren Baghdasaryan <surenb@google.com>
> Cc: Lokesh Gidra <lokeshgidra@google.com>
Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
next prev parent reply other threads:[~2025-02-21 11:27 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-13 22:46 [PATCH v10 00/18] reimplement per-vma lock as a refcount Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 01/18] mm: introduce vma_start_read_locked{_nested} helpers Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 02/18] mm: move per-vma lock into vm_area_struct Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 03/18] mm: mark vma as detached until it's added into vma tree Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 04/18] mm: introduce vma_iter_store_attached() to use with attached vmas Suren Baghdasaryan
2025-02-21 11:07 ` Vlastimil Babka
2025-02-21 16:11 ` Liam R. Howlett
2025-02-13 22:46 ` [PATCH v10 05/18] mm: mark vmas detached upon exit Suren Baghdasaryan
2025-02-21 16:14 ` Liam R. Howlett
2025-02-13 22:46 ` [PATCH v10 06/18] types: move struct rcuwait into types.h Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 07/18] mm: allow vma_start_read_locked/vma_start_read_locked_nested to fail Suren Baghdasaryan
2025-02-21 11:27 ` Vlastimil Babka [this message]
2025-02-13 22:46 ` [PATCH v10 08/18] mm: move mmap_init_lock() out of the header file Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 09/18] mm: uninline the main body of vma_start_write() Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 10/18] refcount: provide ops for cases when object's memory can be reused Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 11/18] refcount: introduce __refcount_{add|inc}_not_zero_limited_acquire Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 12/18] mm: replace vm_lock and detached flag with a reference count Suren Baghdasaryan
2025-02-20 18:53 ` Heiko Carstens
2025-02-20 19:03 ` Suren Baghdasaryan
2025-02-20 20:05 ` Suren Baghdasaryan
2025-02-21 15:18 ` Vlastimil Babka
2025-02-13 22:46 ` [PATCH v10 13/18] mm: move lesser used vma_area_struct members into the last cacheline Suren Baghdasaryan
2025-02-21 15:20 ` Vlastimil Babka
2025-02-13 22:46 ` [PATCH v10 14/18] mm/debug: print vm_refcnt state when dumping the vma Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 15/18] mm: remove extra vma_numab_state_init() call Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 16/18] mm: prepare lock_vma_under_rcu() for vma reuse possibility Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 17/18] mm: make vma cache SLAB_TYPESAFE_BY_RCU Suren Baghdasaryan
2025-02-13 22:46 ` [PATCH v10 18/18] docs/mm: document latest changes to vm_lock Suren Baghdasaryan
2025-02-21 15:44 ` Vlastimil Babka
2025-02-14 19:34 ` [PATCH v10 00/18] reimplement per-vma lock as a refcount Shivank Garg
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