linux-kernel - Re: 回复: 回复: 回复: [PATCH V5] loop: Add sanity check for read/write

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Message-ID: <aCxqgDkHPHxrOFJH@infradead.org>
Date: Tue, 20 May 2025 04:41:52 -0700
From: "hch@...radead.org" <hch@...radead.org>
To: "Xu, Lizhi" <Lizhi.Xu@...driver.com>
Cc: "hch@...radead.org" <hch@...radead.org>,
	Christian Hesse <mail@...rm.de>,
	"axboe@...nel.dk" <axboe@...nel.dk>,
	"christian@...sel.eu" <christian@...sel.eu>,
	"linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ming.lei@...hat.com" <ming.lei@...hat.com>,
	"syzbot+6af973a3b8dfd2faefdc@...kaller.appspotmail.com" <syzbot+6af973a3b8dfd2faefdc@...kaller.appspotmail.com>,
	"syzkaller-bugs@...glegroups.com" <syzkaller-bugs@...glegroups.com>
Subject: Re: 回复: 回复: 回复:
 [PATCH V5] loop: Add sanity check for read/write_iter

On Tue, May 20, 2025 at 11:39:48AM +0000, Xu, Lizhi wrote:
> No, isofs does not support read_iter.

isofs does use generic_file_read_iter as read_iter method through
generic_ro_fops.  Why do you keep insisting on a wrong answer instead
of simply checking what read* method is used by isofs?