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Message-ID: <877hdk9aq8.fsf@linux.vnet.ibm.com> Date: Tue, 01 Feb 2011 00:11:51 +0530 From: "Aneesh Kumar K. V" <aneesh.kumar@...ux.vnet.ibm.com> To: Miklos Szeredi <miklos@...redi.hu> Cc: v9fs-developer@...ts.sourceforge.net, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [RFC PATCH -V1 0/7] Buffered write and writeable mmap support for 9P On Mon, 31 Jan 2011 10:38:10 +0100, Miklos Szeredi <miklos@...redi.hu> wrote: > On Sun, 30 Jan 2011, Aneesh Kumar K.V wrote: > > The patch series implement buffered write and writeable mmap for 9P > > P9 is supposed to work with servers on the local machine, right? Yes > > In that case you need to think about various deadlock scenarios. An > example: the P9 server needs a large order allocation while serving > the buffered write request. That may trigger the page reclaim and go > into synchronous writeback, possibly waiting on the exact page which > the P9 server is just trying to finish writing out. > > This is not easy to deal with, see commit 3be5a52b for the fuse > solution. I'm not saying it's the only way, there may be a better > one. > Thanks for the commit info. I will look at the details and see how best we can solve this in 9P -aneesh -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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