Re: [RFC 1/2] mm: disable LRU pagevec during the migration temporarily

On Wed, Feb 17, 2021 at 09:11:43PM +0000, Matthew Wilcox wrote:

On Wed, Feb 17, 2021 at 12:51:25PM -0800, Minchan Kim wrote:

quoted

I'd like to avoid atomic operation if we could.

Why do you think that the spinlock is better?

Michal suggested atomic_inc in writeside and atomic_read in readside.
I wanted to avoid atomic operation in readside path.

You are suggesting atomic for writeside and just read(not atomic_read)
in readside?