Messages in this thread |  | | Date | Tue, 25 Sep 2001 13:15:28 -0700 (PDT) | Subject | Re: Locking comment on shrink_caches() | From | "David S. Miller" <> |
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From: Marcelo Tosatti <marcelo@conectiva.com.br> Date: Tue, 25 Sep 2001 15:40:23 -0300 (BRT)
We can simply lock the pagecachelock and the pagemap_lru_lock at the beginning of the cleaning function. page_launder() use to do that.
Thats why I asked Andrea if there was long hold times by shrink_caches().
Ok, I see.
I do think it's silly to hold the pagecache_lock during pure scanning activities of shrink_caches().
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.
Franks a lot, David S. Miller davem@redhat.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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