On 4/28/19 11:57 AM, Waiman Long wrote: > During my rwsem testing, it was found that after a down_read(), the > reader count may occasionally become 0 or even negative. Consequently, > a writer may steal the lock at that time and execute with the reader > in parallel thus breaking the mutual exclusion guarantee of the write > lock. In other words, both readers and writer can become rwsem owners > simultaneously. I would like to have this particular patch merged in the next merge window, if possible, so that I can backport it downstream. Thanks, Longman
