On Sun, Apr 7, 2024 at 12:23 AM Chao Yu <c...@kernel.org> wrote:
>
> From: Wenjie Qi <qwjh...@gmail.com>
>
> If the max open zones of zoned devices are less than
> the active logs of F2FS, the device may error due to
> insufficient zone resources when multiple active logs
> are being written at the same time.
>
> Signed-off-by: Wenjie Qi <qwjh...@gmail.com>
> Signed-off-by: Chao Yu <c...@kernel.org>
> ---
> v7:
> - check f2fs_sb_has_blkzoned() instead of multiple-device condition
> in f2fs_remount().
> fs/f2fs/f2fs.h | 1 +
> fs/f2fs/super.c | 27 +++++++++++++++++++++++++++
> 2 files changed, 28 insertions(+)
>
> diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
> index 0550929dc6e5..694f8a52cb84 100644
> --- a/fs/f2fs/f2fs.h
> +++ b/fs/f2fs/f2fs.h
> @@ -1559,6 +1559,7 @@ struct f2fs_sb_info {
>
> #ifdef CONFIG_BLK_DEV_ZONED
> unsigned int blocks_per_blkz; /* F2FS blocks per zone */
> + unsigned int max_open_zones; /* max open zone resources of
> the zoned device */
> #endif
>
> /* for node-related operations */
> diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
> index ba6288e870c5..fdf358c7f808 100644
> --- a/fs/f2fs/super.c
> +++ b/fs/f2fs/super.c
> @@ -2324,6 +2324,17 @@ static int f2fs_remount(struct super_block *sb, int
> *flags, char *data)
> if (err)
> goto restore_opts;
>
> +#ifdef CONFIG_BLK_DEV_ZONED
> + if (f2fs_sb_has_blkzoned(sbi) &&
> + sbi->max_open_zones < F2FS_OPTION(sbi).active_logs) {
> + f2fs_err(sbi,
> + "zoned: max open zones %u is too small, need at least
> %u open zones",
> + sbi->max_open_zones,
> F2FS_OPTION(sbi).active_logs);
> + err = -EINVAL;
> + goto restore_opts;
> + }
> +#endif
> +
> /* flush outstanding errors before changing fs state */
> flush_work(&sbi->s_error_work);
>
> @@ -3866,11 +3877,24 @@ static int init_blkz_info(struct f2fs_sb_info *sbi,
> int devi)
> sector_t nr_sectors = bdev_nr_sectors(bdev);
> struct f2fs_report_zones_args rep_zone_arg;
> u64 zone_sectors;
> + unsigned int max_open_zones;
> int ret;
>
> if (!f2fs_sb_has_blkzoned(sbi))
> return 0;
>
> + if (bdev_is_zoned(FDEV(devi).bdev)) {
> + max_open_zones = bdev_max_open_zones(bdev);
> + if (max_open_zones && (max_open_zones < sbi->max_open_zones))
> + sbi->max_open_zones = max_open_zones;
> + if (sbi->max_open_zones < F2FS_OPTION(sbi).active_logs) {
> + f2fs_err(sbi,
> + "zoned: max open zones %u is too small, need
> at least %u open zones",
> + sbi->max_open_zones,
> F2FS_OPTION(sbi).active_logs);
> + return -EINVAL;
> + }
> + }
> +
> zone_sectors = bdev_zone_sectors(bdev);
> if (sbi->blocks_per_blkz && sbi->blocks_per_blkz !=
> SECTOR_TO_BLOCK(zone_sectors))
> @@ -4191,6 +4215,9 @@ static int f2fs_scan_devices(struct f2fs_sb_info *sbi)
>
> logical_blksize = bdev_logical_block_size(sbi->sb->s_bdev);
> sbi->aligned_blksize = true;
> +#ifdef CONFIG_BLK_DEV_ZONED
> + sbi->max_open_zones = UINT_MAX;
> +#endif
>
> for (i = 0; i < max_devices; i++) {
> if (i == 0)
> --
> 2.40.1
>
>
Reviewed-by: Daeho Jeong <daehoje...@google.com>
>
> _______________________________________________
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> Linux-f2fs-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
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