From d1cc579383191fe6c3f1eeac45eb50b8976d38de Mon Sep 17 00:00:00 2001 From: Naohiro Aota Date: Mon, 13 Mar 2023 16:46:54 +0900 Subject: btrfs: sysfs: relax bg_reclaim_threshold for debugging purposes Currently, /sys/fs/btrfs//bg_reclaim_threshold is limited to 0 (disable) or [50 .. 100]%, so we need to fill 50% of a device to start the auto reclaim process. It is cumbersome to do so when we want to shake out possible race issues of normal write vs reclaim. Relax the threshold check under the BTRFS_DEBUG option. Reviewed-by: Johannes Thumshirn Signed-off-by: Naohiro Aota Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/sysfs.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'fs/btrfs/sysfs.c') diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 37fc58a7f27e..25294e624851 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -1262,8 +1262,13 @@ static ssize_t btrfs_bg_reclaim_threshold_store(struct kobject *kobj, if (ret) return ret; +#ifdef CONFIG_BTRFS_DEBUG + if (thresh != 0 && (thresh > 100)) + return -EINVAL; +#else if (thresh != 0 && (thresh <= 50 || thresh > 100)) return -EINVAL; +#endif WRITE_ONCE(fs_info->bg_reclaim_threshold, thresh); -- cgit v1.2.3-73-gaa49b