Re: [PATC] block: update queue limits atomically

[Mikulas Patocka]

On Tue, 18 Mar 2025, Bart Van Assche wrote:

> On 3/18/25 7:26 AM, Mikulas Patocka wrote:
> > The block limits may be read while they are being modified. The statement
> > "q->limits = *lim" is not really atomic. The compiler may turn it into
> > memcpy (clang does).
> 
> Which code reads block limits while these are being updated?

See my reply to Ming - 
https://lore.kernel.org/dm-devel/14dd4360-c846-43e3-86bc-b1e7448e5...@acm.org/T/#m7e4e49fed1cbcb56954b880e54a5155c4089c0e0

> This should be mentioned in the patch description.
> 
> Bart.

Yes, I can add it there.

Mikulas