From: Christoph Hellwig <hch@lst.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Darrick J . Wong" <djwong@kernel.org>,
dri-devel@lists.freedesktop.org,
David Howells <dhowells@redhat.com>,
linux-mm@kvack.org, Huang Rui <ray.huang@amd.com>,
David Airlie <airlied@gmail.com>, Christoph Hellwig <hch@lst.de>,
x86@kernel.org, Hugh Dickins <hughd@google.com>,
Matthew Wilcox <willy@infradead.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Thomas Zimmermann <tzimmermann@suse.de>,
intel-gfx@lists.freedesktop.org,
Maxime Ripard <mripard@kernel.org>,
Rodrigo Vivi <rodrigo.vivi@intel.com>,
linux-sgx@vger.kernel.org, Jarkko Sakkinen <jarkko@kernel.org>,
keyrings@vger.kernel.org, Daniel Vetter <daniel@ffwll.ch>,
linux-fsdevel@vger.kernel.org,
Christian Koenig <christian.koenig@amd.com>,
Chandan Babu R <chandan.babu@oracle.com>
Subject: Re: disable large folios for shmem file used by xfs xfile
Date: Wed, 10 Jan 2024 17:19:07 +0100 [thread overview]
Message-ID: <20240110161907.GA1388@lst.de> (raw)
In-Reply-To: <20240110073843.d663fa6610785a8611b2cebe@linux-foundation.org>
On Wed, Jan 10, 2024 at 07:38:43AM -0800, Andrew Morton wrote:
> I assume that kernels which contain 137db333b29186 ("xfs: teach xfile
> to pass back direct-map pages to caller") want this, so a Fixes: that
> and a cc:stable are appropriate?
I think it needs to back all the way back to 3934e8ebb7c
("xfs: create a big array data structure") as that only clears the page
sized chunk of a new allocation and could lead to corruption / or
information leaks.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Hellwig <hch@lst.de>,
Matthew Wilcox <willy@infradead.org>,
Hugh Dickins <hughd@google.com>,
Chandan Babu R <chandan.babu@oracle.com>,
"Darrick J . Wong" <djwong@kernel.org>,
David Howells <dhowells@redhat.com>,
Jarkko Sakkinen <jarkko@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@gmail.com>, Daniel Vetter <daniel@ffwll.ch>,
Christian Koenig <christian.koenig@amd.com>,
Huang Rui <ray.huang@amd.com>,
Jani Nikula <jani.nikula@linux.intel.com>,
Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
Rodrigo Vivi <rodrigo.vivi@intel.com>,
Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>,
intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
x86@kernel.org, linux-sgx@vger.kernel.org, linux-mm@kvack.org,
linux-fsdevel@vger.kernel.org, keyrings@vger.kernel.org
Subject: Re: disable large folios for shmem file used by xfs xfile
Date: Wed, 10 Jan 2024 17:19:07 +0100 [thread overview]
Message-ID: <20240110161907.GA1388@lst.de> (raw)
In-Reply-To: <20240110073843.d663fa6610785a8611b2cebe@linux-foundation.org>
On Wed, Jan 10, 2024 at 07:38:43AM -0800, Andrew Morton wrote:
> I assume that kernels which contain 137db333b29186 ("xfs: teach xfile
> to pass back direct-map pages to caller") want this, so a Fixes: that
> and a cc:stable are appropriate?
I think it needs to back all the way back to 3934e8ebb7c
("xfs: create a big array data structure") as that only clears the page
sized chunk of a new allocation and could lead to corruption / or
information leaks.
next prev parent reply other threads:[~2024-01-10 16:27 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-10 9:21 disable large folios for shmem file used by xfs xfile Christoph Hellwig
2024-01-10 9:21 ` Christoph Hellwig
2024-01-10 9:21 ` [PATCH 1/2] mm: add a mapping_clear_large_folios helper Christoph Hellwig
2024-01-10 9:21 ` Christoph Hellwig
2024-01-10 9:21 ` [PATCH 2/2] xfs: disable large folio support in xfile_create Christoph Hellwig
2024-01-10 9:21 ` Christoph Hellwig
2024-01-10 17:55 ` Darrick J. Wong
2024-01-10 17:55 ` Darrick J. Wong
2024-01-10 17:55 ` Darrick J. Wong
2024-01-10 20:04 ` Darrick J. Wong
2024-01-10 20:04 ` Darrick J. Wong
2024-01-10 20:04 ` Darrick J. Wong
2024-01-11 22:00 ` Andrew Morton
2024-01-11 22:00 ` Andrew Morton
2024-01-11 22:00 ` Andrew Morton
2024-01-11 22:45 ` Matthew Wilcox
2024-01-11 22:45 ` Matthew Wilcox
2024-01-11 22:45 ` Matthew Wilcox
2024-01-12 2:22 ` Darrick J. Wong
2024-01-12 2:22 ` Darrick J. Wong
2024-01-12 2:22 ` Darrick J. Wong
2024-02-08 1:56 ` Andrew Morton
2024-02-08 16:03 ` Darrick J. Wong
2024-01-10 12:37 ` disable large folios for shmem file used by xfs xfile Matthew Wilcox
2024-01-10 12:37 ` Matthew Wilcox
2024-01-10 12:37 ` Matthew Wilcox
2024-01-10 15:20 ` Joonas Lahtinen
2024-01-10 15:20 ` Joonas Lahtinen
2024-01-10 15:20 ` Joonas Lahtinen
2024-01-10 15:28 ` Joonas Lahtinen
2024-01-10 15:28 ` Joonas Lahtinen
2024-01-10 15:28 ` Joonas Lahtinen
2024-01-10 15:34 ` Matthew Wilcox
2024-01-10 15:34 ` Matthew Wilcox
2024-01-10 15:34 ` Matthew Wilcox
2024-01-11 21:30 ` Daniel Gomez
2024-01-11 21:30 ` Daniel Gomez
2024-01-11 21:30 ` Daniel Gomez
2024-01-10 16:18 ` Christoph Hellwig
2024-01-10 16:18 ` Christoph Hellwig
2024-01-10 14:35 ` ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/2] mm: add a mapping_clear_large_folios helper Patchwork
2024-01-10 14:35 ` ✗ Fi.CI.SPARSE: " Patchwork
2024-01-10 14:54 ` ✗ Fi.CI.BAT: failure " Patchwork
2024-01-10 15:38 ` disable large folios for shmem file used by xfs xfile Andrew Morton
2024-01-10 15:38 ` Andrew Morton
2024-01-10 15:38 ` Andrew Morton
2024-01-10 16:19 ` Christoph Hellwig [this message]
2024-01-10 16:19 ` Christoph Hellwig
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