From: Michal Hocko <mhocko@suse.com>
To: Suren Baghdasaryan <surenb@google.com>
Cc: akpm@linux-foundation.org, ccross@google.com,
sumit.semwal@linaro.org, dave.hansen@intel.com,
keescook@chromium.org, willy@infradead.org,
kirill.shutemov@linux.intel.com, vbabka@suse.cz,
hannes@cmpxchg.org, corbet@lwn.net, viro@zeniv.linux.org.uk,
rdunlap@infradead.org, kaleshsingh@google.com, peterx@redhat.com,
rppt@kernel.org, peterz@infradead.org, catalin.marinas@arm.com,
vincenzo.frascino@arm.com, chinwen.chang@mediatek.com,
axelrasmussen@google.com, aarcange@redhat.com, jannh@google.com,
apopple@nvidia.com, jhubbard@nvidia.com, yuzhao@google.com,
will@kernel.org, fenghua.yu@intel.com,
thunder.leizhen@huawei.com, hughd@google.com,
feng.tang@intel.com, jgg@ziepe.ca, guro@fb.com,
tglx@linutronix.de, krisman@collabora.com,
chris.hyser@oracle.com, pcc@google.com, ebiederm@xmission.com,
axboe@kernel.dk, legion@kernel.org, eb@emlix.com,
songmuchun@bytedance.com, viresh.kumar@linaro.org,
thomascedeno@google.com, sashal@kernel.org, cxfcosmos@gmail.com,
linux@rasmusvillemoes.dk, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-doc@vger.kernel.org,
linux-mm@kvack.org, kernel-team@android.com
Subject: Re: [PATCH v8 2/3] mm: add a field to store names for private anonymous memory
Date: Wed, 1 Sep 2021 10:10:17 +0200 [thread overview]
Message-ID: <YS81abHD8KZMrX8D@dhcp22.suse.cz> (raw)
In-Reply-To: <20210827191858.2037087-3-surenb@google.com>
On Fri 27-08-21 12:18:57, Suren Baghdasaryan wrote:
[...]
> +static void replace_vma_anon_name(struct vm_area_struct *vma, const char *name)
> +{
> + if (!name) {
> + free_vma_anon_name(vma);
> + return;
> + }
> +
> + if (vma->anon_name) {
> + /* Should never happen, to dup use dup_vma_anon_name() */
> + WARN_ON(vma->anon_name == name);
What is the point of this warning?
> +
> + /* Same name, nothing to do here */
> + if (!strcmp(name, vma->anon_name))
> + return;
> +
> + free_vma_anon_name(vma);
> + }
> + vma->anon_name = kstrdup(name, GFP_KERNEL);
> +}
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2021-09-01 8:10 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-27 19:18 [PATCH v8 0/3] Anonymous VMA naming patches Suren Baghdasaryan
2021-08-27 19:18 ` Suren Baghdasaryan
2021-08-27 19:18 ` [PATCH v8 1/3] mm: rearrange madvise code to allow for reuse Suren Baghdasaryan
2021-08-27 19:18 ` Suren Baghdasaryan
2021-08-28 0:14 ` Kees Cook
2021-08-28 0:58 ` Suren Baghdasaryan
2021-08-28 16:19 ` Cyrill Gorcunov
2021-08-28 21:59 ` Suren Baghdasaryan
2021-08-27 19:18 ` [PATCH v8 2/3] mm: add a field to store names for private anonymous memory Suren Baghdasaryan
2021-08-27 19:18 ` Suren Baghdasaryan
2021-08-28 1:47 ` Matthew Wilcox
2021-08-28 5:52 ` Kees Cook
2021-08-28 21:47 ` Suren Baghdasaryan
2021-08-30 8:12 ` Rasmus Villemoes
2021-08-30 16:16 ` Suren Baghdasaryan
2021-08-30 16:59 ` Matthew Wilcox
2021-08-31 17:21 ` Suren Baghdasaryan
2021-08-28 21:28 ` Cyrill Gorcunov
2021-08-28 21:53 ` Suren Baghdasaryan
2021-09-01 8:09 ` Michal Hocko
2021-09-01 15:28 ` Suren Baghdasaryan
2021-09-01 8:10 ` Michal Hocko [this message]
2021-09-01 15:42 ` Suren Baghdasaryan
2021-09-03 11:49 ` Michal Hocko
2021-09-03 15:47 ` Suren Baghdasaryan
2021-08-27 19:18 ` [PATCH v8 3/3] mm: add anonymous vma name refcounting Suren Baghdasaryan
2021-08-27 19:18 ` Suren Baghdasaryan
2021-08-28 5:28 ` Kees Cook
2021-08-28 21:13 ` Suren Baghdasaryan
2021-08-30 7:03 ` Rolf Eike Beer
2021-08-30 7:03 ` Rolf Eike Beer
2021-08-30 16:12 ` Suren Baghdasaryan
2021-08-28 12:48 ` [PATCH v8 0/3] Anonymous VMA naming patches Pavel Machek
2021-08-28 22:06 ` Suren Baghdasaryan
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