Messages in this thread |  | | Date | Thu, 11 Apr 2002 13:36:10 -0400 | | From | Benjamin LaHaise <> | | Subject | Re: [PATCH] zerocopy NFS updated |
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On Thu, Apr 11, 2002 at 03:16:16PM +0200, Andi Kleen wrote: > On Thu, Apr 11, 2002 at 04:00:37PM -0200, Denis Vlasenko wrote: > > On 11 April 2002 09:36, David S. Miller wrote: > > > No, you must block truncate operations on the file until the client > > > ACK's the nfsd read request if you wish to use sendfile() with > > > nfsd. > > > > Which shouldn't be a big performance problem unless I am unaware > > of some real-life applications doing heavy truncates. > > Every unlink does a truncate. There are applications that delete files > a lot.
Not quite. The implicite truncate only happens when the link count falls to 0 and the last user of the inode releases their reference to the inode.
-ben -- "A man with a bass just walked in, and he's putting it down on the floor." - 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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