From: Matthew Wilcox <willy@infradead.org>
To: "Darrick J. Wong" <djwong@kernel.org>
Cc: Joanne Koong <joannelkoong@gmail.com>,
Miklos Szeredi <miklos@szeredi.hu>,
linux-fsdevel@vger.kernel.org, kernel-team@meta.com
Subject: Re: [PATCH] fuse: disable default bdi strictlimiting
Date: Fri, 10 Oct 2025 16:07:58 +0100 [thread overview]
Message-ID: <aOkhTlyj44bg3tI3@casper.infradead.org> (raw)
In-Reply-To: <20251010150113.GC6174@frogsfrogsfrogs>
On Fri, Oct 10, 2025 at 08:01:13AM -0700, Darrick J. Wong wrote:
> [cc willy in case he has opinions about dynamically changing the
> pagecache order range]
It's not designed for that. mapping_set_folio_order_range() accesses
mapping->flags without any locking/atomicity, so we can overwrite
other changes to mapping->flags, like setting AS_EIO. It really
is supposed to be "the filesystem supports folios of these sizes",
not "we've made some runtime change to the filesystem and now we'd
preefer the MM uses folios of these sizes instead of those".
next prev parent reply other threads:[~2025-10-10 15:08 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-08 20:41 [PATCH] fuse: disable default bdi strictlimiting Joanne Koong
2025-10-09 14:16 ` Miklos Szeredi
2025-10-09 18:36 ` Joanne Koong
2025-10-10 15:01 ` Darrick J. Wong
2025-10-10 15:07 ` Matthew Wilcox [this message]
2025-10-10 23:14 ` Joanne Koong
2025-10-27 22:38 ` Joanne Koong
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