From: Vinicius Costa Gomes <vinicius.gomes@intel.com>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: brauner@kernel.org, amir73il@gmail.com, hu1.chen@intel.com,
malini.bhandaru@intel.com, tim.c.chen@intel.com,
mikko.ylinen@intel.com, lizhen.you@intel.com,
linux-unionfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 05/16] overlayfs: Use ovl_override_creds_light()/revert_creds_light()
Date: Mon, 26 Aug 2024 15:57:32 -0700 [thread overview]
Message-ID: <87a5gylwo3.fsf@intel.com> (raw)
In-Reply-To: <CAJfpegtko6VtNpshGUzZixE0jqecwQR91xT=Q7W5sf6HPGVPeQ@mail.gmail.com>
Miklos Szeredi <miklos@szeredi.hu> writes:
> On Thu, 22 Aug 2024 at 03:25, Vinicius Costa Gomes
> <vinicius.gomes@intel.com> wrote:
>>
>> Convert to use ovl_override_creds_light()/revert_creds_light(), these
>> functions assume that the critical section won't modify the usage
>> counter of the credentials in question.
>>
>> In most overlayfs instances, the credentials lifetime is the duration
>
> Why most instances? AFAICS the creds have the same lifetime as the
> overlayfs superblock.
>
I may be reading the code wrong, but on file creation some of the
credentials that are worked on come from the task(?).
Cheers,
--
Vinicius
next prev parent reply other threads:[~2024-08-26 22:57 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-08-22 1:25 [PATCH v2 00/16] overlayfs: Optimize override/revert creds Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 01/16] cred: Add a light version of override/revert_creds() Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 02/16] fs/backing-file: Convert to revert/override_creds_light() Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 03/16] fs/overlayfs: Introduce ovl_override_creds_light() Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 04/16] overlayfs: Document critical override_creds() operations Vinicius Costa Gomes
2024-08-22 8:14 ` Miklos Szeredi
2024-08-26 22:48 ` Vinicius Costa Gomes
2024-09-24 21:13 ` Vinicius Costa Gomes
2024-09-25 9:57 ` Christian Brauner
2024-09-25 14:17 ` Vinicius Costa Gomes
2024-10-07 11:12 ` Amir Goldstein
2024-10-07 16:13 ` Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 05/16] overlayfs: Use ovl_override_creds_light()/revert_creds_light() Vinicius Costa Gomes
2024-08-22 8:26 ` Miklos Szeredi
2024-08-26 22:57 ` Vinicius Costa Gomes [this message]
2024-08-22 1:25 ` [PATCH v2 06/16] cred: Introduce cred_guard() and cred_scoped_guard() helpers Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 07/16] fs/backing-file: Convert to cred_guard() Vinicius Costa Gomes
2024-08-22 8:31 ` Miklos Szeredi
2024-08-26 22:58 ` Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 08/16] overlayfs/copy_up: " Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 09/16] overlayfs/dir: " Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 10/16] overlayfs/file: " Vinicius Costa Gomes
2024-08-22 8:41 ` Miklos Szeredi
2024-08-26 23:12 ` Vinicius Costa Gomes
2024-08-22 11:06 ` Amir Goldstein
2024-08-26 23:18 ` Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 11/16] overlayfs/inode: " Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 12/16] overlayfs/namei: " Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 13/16] overlayfs/readdir: " Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 14/16] overlayfs/xattrs: " Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 15/16] overlayfs/util: " Vinicius Costa Gomes
2024-08-22 1:25 ` [PATCH v2 16/16] overlayfs: Remove ovl_override_creds_light() Vinicius Costa Gomes
2024-08-22 8:59 ` Miklos Szeredi
2024-08-26 23:21 ` Vinicius Costa Gomes
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