Re: Locking comment on shrink_caches()

Andrea Arcangeli
2001-09-25T22:01:57Z

On Tue, Sep 25, 2001 at 01:15:28PM -0700, David S. Miller wrote:
> I do think it's silly to hold the pagecache_lock during pure scanning
> activities of shrink_caches().

Indeed again.

> It is known that pagecache_lock is the biggest scalability issue on
> large SMP systems, and thus the page cache locking patches Ingo and
> myself did.

yes.

IMHO if we would hold the pagecache lock all the time while shrinking
the cache, then we could kill the lru lock in first place.

Andrea