Messages in this thread | | | Date | Sat, 10 Dec 2005 16:47:36 -0800 | From | Andrew Morton <> | Subject | Re: allowed pages in the block later, was Re: [Ext2-devel] [PATCH] ext3: avoid sending down non-refcounted pages |
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Christoph Hellwig <hch@infradead.org> wrote: > > The problem we're trying to solve here is how do implement network block > devices (nbd, iscsi) efficiently. The zero copy codepath in the networking > layer does need to grab additional references to pages. So to use sendpage > we need a refcountable page. pages used by the slab allocator are not > normally refcounted so try to do get_page/pub_page on them will break.
I don't get it. Doing get_page/put_page on a slab-allocated page should do the right thing? - 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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