From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 695644C10EB for ; Fri, 9 Oct 2026 10:58:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791543525; cv=none; b=sTZdlf0Q5ttxMW7M/SMQIpoQTX+g/r3eYzYHbYMIqPhB1P2ROUQulWDoENs9coKY6n9Q/odF+y5iEtUk8ci3Qdd9P13avAmuA46V8PEyzssOLuu2jIHet6eEjIrNd3a55kWZtujJlzQOyJlK28zbdK1qphpEclnFwpf6vzJgskU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791543525; c=relaxed/simple; bh=m4Je+1Loy6mLoPCXjyf16mVBmJDHPS2K5DWcbAqjkIU=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=hj8p7NJTwVU+bEqRqPruyPIuGW7iglxhdX4dXWTHk1vt+dYZ/sxyP0wE9e6qGNsxj3OMJLElPnhqlQy9g3i9Qt/F2m+MvD87wNdXq9VT3yZEB9Jc6cClww07wmVKjxNH2+ujGXUo1BXlfvq5WnJdQjAZkzfoXM+SCb6wPNiYFSI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Dot/8WF/; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Dot/8WF/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9D07B1F000FF; Fri, 9 Oct 2026 10:58:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791543511; bh=C1SdB7k2BTQWPIn8qLRWoFGVhJ6N6HSqN3Bs4zPCWRg=; h=From:To:Cc:Subject:Date; b=Dot/8WF/MTjUVV7DMeujLXSUGAru4AKA7LjDPzrGmIlY6IUSOvpYqi9zxjRTWtVVi dxnBocmnt1YOFPaYTdgnq+LBqd7pT6H1LIeJM3Vu6mqqHkZ+VoOXjPOd1U8yygIMaC +5qBCCykJdsmdeRhCxpayuPqEwRlpHOz95mN2QDMXvM/lNhkahRXUq5Ok2BVbt6Wf/ CXdzbujUA9fyKVKvHAoMYE1uPmt6WvH2McXm2XV92HYEmc8+W0568S5BSmQtC8QpQp 4uJP3Rc9s93x0ZPlcMoCv7L7KMqnvG1qOmjECcGqBypX3SCx9Ufpyi7GzWc/HVtowg YdDgtKBeIlb7g== From: Chao Yu To: jaegeuk@kernel.org Cc: linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, Chao Yu , stable@kernel.org, Daeho Jeong Subject: [PATCH 6.6.y 1/3] f2fs: fix to reclaim space in f2fs_allocate_pinning_section() Date: Fri, 9 Oct 2026 10:58:20 +0000 Message-ID: <20261009105822.1859709-1-chao@kernel.org> X-Mailer: git-send-email 2.56.0.385.gd3acb90ef8-goog Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Chao Yu [ Upstream commit fa487f56efba6344aef67d871688f0908fe08af3 ] It needs to trigger checkpoint to free space reclaimed by f2fs_gc_range(), otherwise, fallocate() on pinfile will fail easily even there is slash space in conventional zone. [Testcase] nullblk_create.sh 512 2 1024 1024 mkfs.f2fs /dev/nullb0 -f -m mount /dev/nullb0 /mnt/f2fs/ touch /mnt/f2fs/pinfile f2fs_io pinfile set /mnt/f2fs/pinfile mkdir /mnt/f2fs/dir/ for((i=0;i<3934;i++)) do { dd if=/dev/zero of=/mnt/f2fs/dir/$i bs=1M count=1;} done sync for((i=0;i<3934;i+=2)) do { rm /mnt/f2fs/dir/$i;} done for((i=0;i<1950;i++)) do { rm /mnt/f2fs/dir/$i;} done sync f2fs_io fallocate 0 0 $((1024*1024*1024)) /mnt/f2fs/pinfile sync stat /mnt/f2fs/pinfile f2fs_io fiemap 0 $((1024*1024*1024)) /mnt/f2fs/pinfile [Before] fallocate failed: Resource temporarily unavailable File: /mnt/f2fs/pinfile Size: 109051904 Blocks: 213208 IO Block: 4096 regular file Device: 250,0 Inode: 4 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2026-08-12 20:04:02.264000000 +0800 Modify: 2026-08-12 20:04:26.784000000 +0800 Change: 2026-08-12 20:04:26.784000000 +0800 Birth: - root@localhost:~# root@localhost:~# root@localhost:~# root@localhost:~# f2fs_io fiemap 0 $((1024*1024*1024)) /mnt/f2fs/pinfile Fiemap: offset = 0 len = 1073741824 logical addr. physical addr. length flags 0 0000000000000000 0000000002e00000 0000000000200000 00001000 1 0000000000200000 000000002dc00000 0000000000400000 00001000 2 0000000000600000 000000002e400000 0000000000600000 00001000 3 0000000000c00000 000000007a400000 0000000005c00000 00001001 [After] File: /mnt/f2fs/pinfile Size: 1073741824 Blocks: 2099216 IO Block: 4096 regular file Device: 250,0 Inode: 4 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2026-08-12 19:47:49.428000000 +0800 Modify: 2026-08-12 19:49:06.808000000 +0800 Change: 2026-08-12 19:49:06.808000000 +0800 Birth: - Fiemap: offset = 0 len = 1073741824 logical addr. physical addr. length flags 0 0000000000000000 0000000002e00000 0000000000200000 00001000 1 0000000000200000 000000003aa00000 0000000000400000 00001000 2 0000000000600000 000000003b400000 0000000000200000 00001000 3 0000000000800000 000000007a200000 0000000005e00000 00001000 4 0000000006600000 0000000002800000 0000000000200000 00001000 5 0000000006800000 0000000003200000 0000000000400000 00001000 6 0000000006c00000 0000000003000000 0000000000200000 00001000 7 0000000006e00000 0000000003600000 0000000037200000 00001000 8 000000003e000000 000000003b200000 0000000000200000 00001000 9 000000003e200000 000000003a800000 0000000000200000 00001000 10 000000003e400000 000000003ae00000 0000000000400000 00001000 11 000000003e800000 000000003b600000 0000000001800000 00001001 Cc: stable@kernel.org Fixes: 9703d69d9d15 ("f2fs: support file pinning for zoned devices") Cc: Daeho Jeong Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim [ Chao Yu: backport to 6.6.y: - retain existing f2fs_up_write(&sbi->gc_lock) as 6.6 lacks lock tracing - assign err = f2fs_gc_range(...) to check return value as in upstream ] Signed-off-by: Chao Yu --- fs/f2fs/segment.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 9c27353f384b..c5c94ac40860 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -3148,11 +3148,15 @@ int f2fs_allocate_pinning_section(struct f2fs_sb_info *sbi) if (f2fs_sb_has_blkzoned(sbi) && err && gc_required) { f2fs_down_write(&sbi->gc_lock); - f2fs_gc_range(sbi, 0, GET_SEGNO(sbi, FDEV(0).end_blk), true, 1); + err = f2fs_gc_range(sbi, 0, GET_SEGNO(sbi, FDEV(0).end_blk), true, 1); f2fs_up_write(&sbi->gc_lock); - - gc_required = false; - goto retry; + if (err) + return err; + err = f2fs_sync_fs(sbi->sb, 1); + if (!err) { + gc_required = false; + goto retry; + } } return err; -- 2.49.0