[RFC PATCH 3/3] Restart pathwalk on rename seqcount change

[Tingmao Wang]

On 6/4/25 01:55, Al Viro wrote:
> On Wed, Jun 04, 2025 at 01:45:45AM +0100, Tingmao Wang wrote:
>> +		rename_seqcount = read_seqbegin(&rename_lock);
>> +		if (rename_seqcount % 2 == 1) {
> 
> Please, describe the condition when that can happen, preferably
> along with a reproducer.

My understanding is that when a rename is in progress the seqcount is odd,
is that correct?

If that's the case, then the fs_race_test in patch 2 should act as a
reproducer, since it's constantly moving the directory.

I can add a comment to explain this, thanks for pointing out.