On Wed, Feb 26, 2025 at 06:10:00PM +0530, Nilay Shroff wrote: > The bdi->ra_pages could be updated under q->limits_lock because it's > usually calculated from the queue limits by queue_limits_commit_update. > So protect reading/writing the sysfs attribute read_ahead_kb using > q->limits_lock instead of q->sysfs_lock. Looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>