On 07/11, Christoph Hellwig wrote:
> I think that's because it doesn't look at sbi->s_ndevs in
> destroy_device_list. Let's try the variant below, which also fixes
> the buildbot warning for non-zoned configfs:
Thanks. At a glance, this looks better. Let me give it a try.
>
> ---
> >From 645d8dceaa97b6ee73be067495b111b15b187498 Mon Sep 17 00:00:00 2001
> From: Christoph Hellwig <hch@xxxxxx>
> Date: Fri, 7 Jul 2023 10:31:49 +0200
> Subject: f2fs: don't reopen the main block device in f2fs_scan_devices
>
> f2fs_scan_devices reopens the main device since the very beginning, which
> has always been useless, and also means that we don't pass the right
> holder for the reopen, which now leads to a warning as the core super.c
> holder ops aren't passed in for the reopen.
>
> Fixes: 3c62be17d4f5 ("f2fs: support multiple devices")
> Fixes: 0718afd47f70 ("block: introduce holder ops")
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
> block/blk-flush.c | 2 +-
> fs/f2fs/super.c | 20 ++++++++------------
> 2 files changed, 9 insertions(+), 13 deletions(-)
>
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index ca31163da00a55..30883beb750a59 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -1561,7 +1561,8 @@ static void destroy_device_list(struct f2fs_sb_info *sbi)
> int i;
>
> for (i = 0; i < sbi->s_ndevs; i++) {
> - blkdev_put(FDEV(i).bdev, sbi->sb->s_type);
> + if (i > 0)
> + blkdev_put(FDEV(i).bdev, sbi->sb->s_type);
> #ifdef CONFIG_BLK_DEV_ZONED
> kvfree(FDEV(i).blkz_seq);
> #endif
> @@ -4190,16 +4191,12 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
> sbi->aligned_blksize = true;
>
> for (i = 0; i < max_devices; i++) {
> -
> - if (i > 0 && !RDEV(i).path[0])
> + if (i == 0)
> + FDEV(0).bdev = sbi->sb->s_bdev;
> + else if (!RDEV(i).path[0])
> break;
>
> - if (max_devices == 1) {
> - /* Single zoned block device mount */
> - FDEV(0).bdev =
> - blkdev_get_by_dev(sbi->sb->s_bdev->bd_dev, mode,
> - sbi->sb->s_type, NULL);
> - } else {
> + if (max_devices > 1) {
> /* Multi-device mount */
> memcpy(FDEV(i).path, RDEV(i).path, MAX_PATH_LEN);
> FDEV(i).total_segments =
> @@ -4215,10 +4212,9 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
> FDEV(i).end_blk = FDEV(i).start_blk +
> (FDEV(i).total_segments <<
> sbi->log_blocks_per_seg) - 1;
> + FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path,
> + mode, sbi->sb->s_type, NULL);
> }
> - FDEV(i).bdev = blkdev_get_by_path(FDEV(i).path, mode,
> - sbi->sb->s_type,
> - NULL);
> }
> if (IS_ERR(FDEV(i).bdev))
> return PTR_ERR(FDEV(i).bdev);
> --
> 2.39.2
