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 9ED5D455162 for ; Sat, 12 Sep 2026 11:56:46 +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=1789214207; cv=none; b=tMH7YUzVhiYrPdET4krYOt4TrfqAo96O/XY1KDUPrhBOy2U1OWpHShlJ51rbahLtTi1kVZlgLO0SdgqyqmfHGzY4j+rOdtpmQiECcHcxC68tnG62BUViGcbLrC4EL6+u92tGt/jPRo1TLdXA3iUNxEhbbq9QMkvAPhT5fF6T48g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789214207; c=relaxed/simple; bh=OOuP2SQQeaiVcbfNNbUcPA8Yw7YJWODMeD3v0dxqotg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dHmmKgDIPceTF+GuLNq2Tytk93zQHEKo4r8OkrvNJ33ajYW1eo4HDvTfb2D8K8oqkPm9Gwf7kpAYcPp2IyGPNaWIQyEVMansBw1usWXvKNGLaWx/gAxfRb0rVgjUVvgv/TdSgqZ1RTgk9yLnjxJnqaLxQdd9LbxhHlWQoi0eOyI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IyCnjcCJ; 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="IyCnjcCJ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BFC361F000FF; Sat, 12 Sep 2026 11:56:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789214206; bh=DA2Hi4MW+s1e+1WZ7Blj5RZMfdLFl64GCViineVV2w0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=IyCnjcCJyGxFfCG+YEV97XZfhtP6Fm5sC0LgwY6xzJbv/AdN8tkrzFR2hyvD+5MiS a2BzCoiwYzaFLh+xUwcNWH8eknonUrKSvhmdN3aLXmswV97xwEp/5UXH4nmcQ91exK J6bRZeLOe5yv+G5n8U8oKcTKM2+HYaZnlt2M3YzCq40iFOqkSYFoaoab791c5eLcYS 1ngVIjYk2hZ62SKZbUfmedZHY8T4W/KB3S7+Zh6dYtgvIbh0PvgNGHjn4T2F8aSFxe wnhiUmcHEkz2hHmU1obACS7gSBC5t2KfvBLwy5WNoWOywj/BKmns1Xy0z52jjWRTDE 62Ve2nuRjtkEA== From: Sasha Levin To: stable@vger.kernel.org Cc: Chao Yu , stable@kernel.org, Daeho Jeong , Jaegeuk Kim , Sasha Levin Subject: [PATCH 6.12.y 1/3] f2fs: fix to reclaim space in f2fs_allocate_pinning_section() Date: Sat, 12 Sep 2026 07:56:42 -0400 Message-ID: <20260912115644.2476312-1-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <2026090944-celtic-lavender-8b43@gregkh> References: <2026090944-celtic-lavender-8b43@gregkh> Precedence: bulk X-Mailing-List: stable@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 Backport to 6.12: retain the existing f2fs_up_write() lock API; this branch does not have the upstream lock tracing context. Preserve the checkpoint after successful range GC, outside gc_lock, before retrying the pinned-section allocation. Also route the existing f2fs_gc_range() error returns through a shared per-iteration exit. This preserves the stable branch's return values and loop behavior while matching the patch context needed by target commit 2b8704b6a8b2896ccad1f5941d9a3e2c5031a470 ("f2fs: fix to reset all pinned status during fggc"). No functions or newer GC locking APIs are added. Stable-dep-of: 2b8704b6a8b2 ("f2fs: fix to reset all pinned status during fggc") Signed-off-by: Sasha Levin --- fs/f2fs/gc.c | 12 +++++++++--- fs/f2fs/segment.c | 9 ++++++--- 2 files changed, 15 insertions(+), 6 deletions(-) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index b8a9412ca1dc8..01cefe00449eb 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -2119,6 +2119,7 @@ int f2fs_gc_range(struct f2fs_sb_info *sbi, .ilist = LIST_HEAD_INIT(gc_list.ilist), .iroot = RADIX_TREE_INIT(gc_list.iroot, GFP_NOFS), }; + int err = 0; /* * avoid migrating empty section, as it can be allocated by @@ -2133,14 +2134,19 @@ int f2fs_gc_range(struct f2fs_sb_info *sbi, do_garbage_collect(sbi, segno, &gc_list, FG_GC, true, false); put_gc_inode(&gc_list); - if (!dry_run && get_valid_blocks(sbi, segno, true)) - return -EAGAIN; + if (!dry_run && get_valid_blocks(sbi, segno, true)) { + err = -EAGAIN; + goto next; + } if (dry_run && dry_run_sections && !get_valid_blocks(sbi, segno, true) && --gc_secs == 0) break; if (fatal_signal_pending(current)) - return -ERESTARTSYS; + err = -ERESTARTSYS; +next: + if (err) + return err; } return 0; diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 4e47826b570a5..9895d5534350b 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -3268,10 +3268,13 @@ int f2fs_allocate_pinning_section(struct f2fs_sb_info *sbi) err = f2fs_gc_range(sbi, 0, sbi->first_seq_zone_segno - 1, true, ZONED_PIN_SEC_REQUIRED_COUNT); f2fs_up_write(&sbi->gc_lock); - - gc_required = false; - if (!err) + if (err) + return err; + err = f2fs_sync_fs(sbi->sb, 1); + if (!err) { + gc_required = false; goto retry; + } } return err; -- 2.53.0