From: Al Viro <viro@zeniv.linux.org.uk>
To: Yang Xiao <YangX92@hotmail.com>
Cc: "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>
Subject: Re: [PATCH] fs: namespace: convert mnt_namespace.count from atomic_t to refcount_t
Date: Thu, 29 Nov 2018 03:08:30 +0000 [thread overview]
Message-ID: <20181129030830.GH2217@ZenIV.linux.org.uk> (raw)
In-Reply-To: <HK0PR01MB21631393517B7937AF3FB55CADD20@HK0PR01MB2163.apcprd01.prod.exchangelabs.com>
On Thu, Nov 29, 2018 at 01:58:40AM +0000, Yang Xiao wrote:
> Hello, see commit 387ad9674b00 ("kernel: convert cgroup_namespace.count
> from atomic_t to refcount_t") for detail.
That would be
refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.
AFAICS, that is the text you'd put into the original posting. Verbatim.
Which additional information have I failed to notice in the commit
you'd mentioned?
prev parent reply other threads:[~2018-11-29 14:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <HK0PR01MB2163CC40FE7D44C73668C462ADD10@HK0PR01MB2163.apcprd01.prod.exchangelabs.com>
2018-11-28 14:33 ` [PATCH] fs: namespace: convert mnt_namespace.count from atomic_t to refcount_t Al Viro
[not found] ` <HK0PR01MB21631393517B7937AF3FB55CADD20@HK0PR01MB2163.apcprd01.prod.exchangelabs.com>
2018-11-29 3:08 ` Al Viro [this message]
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