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Date: Thu, 15 Oct 2026 21:27:57 +0000
From: Jaegeuk Kim <jaegeuk@kernel.org>
To: Nanzhe Zhao <nzzhao@126.com>, Nanzhe Zhao <nzzhao.sigma@gmail.com>,
	Barry Song <baohua@kernel.org>, Nanzhe Zhao <zhaonanzhe@xiaomi.com>,
	Juan Yescas <jyescas@google.com>,
	Daeho Jeong <daehojeong@google.com>, Dev Jain <Dev.Jain@arm.com>,
	linux-kernel@vger.kernel.org,
	David Hildenbrand <David.Hildenbrand@arm.com>,
	Pengfei Li <lipengfei28@xiaomi.com>,
	Bo Zhang <zhangbo56@xiaomi.com>,
	Kalesh Singh <kaleshsingh@google.com>,
	Ryan Roberts <Ryan.Roberts@arm.com>,
	linux-f2fs-devel@lists.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH v5 00/16] f2fs: support & optimize large
 folios for writable files
Message-ID: <atFFXafuVyyimmUk@google.com>
References: <20261014064445.2835813-1-zhaonanzhe@xiaomi.com>
 <atAO6ykqwGgZq77y@google.com>
 <atA24UMtAqkmz_R8@google.com>
 <63e416aa.2fb2.1a13d9f3491.Coremail.nzzhao@126.com>
 <atD9Csw1-lj5_SR_@google.com>
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In-Reply-To: <atD9Csw1-lj5_SR_@google.com>

On 10/15, Jaegeuk Kim via Linux-f2fs-devel wrote:
> On 10/15, Nanzhe Zhao wrote:
> > 
> > Hi Jaeguk:
> > 
> > >Ok, this comes when applying "f2fs: carry subpage offset and count in write IO".
> > >
> > 
> > So we didn't reproduce this bug with the whole series patched on dev-test?
> 
> I hit this after applying the entire patch set. Then, tried to bisect and got an
> issue with that patch in the first round.

Ok, the issue was different when bisecting the patches. After applying the below
change that Chao pointed out, I can continue to bisect. Let's see.

--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -1560,6 +1560,7 @@ static int move_data_page(struct inode *inode, block_t bidx, int gc_type,
                        .op_flags = REQ_SYNC,
                        .old_blkaddr = NULL_ADDR,
                        .folio = folio,
+                       .folio_blkcnt = 1,
                        .encrypted_page = NULL,
                        .need_lock = LOCK_REQ,
                        .io_type = FS_GC_DATA_IO,

> 
> > 
> > Thanks,
> > 
> > _______________________________________________
> > Linux-f2fs-devel mailing list
> > Linux-f2fs-devel@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
> 
> 
> _______________________________________________
> Linux-f2fs-devel mailing list
> Linux-f2fs-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel