Re: readdirplus() as possible POSIX I/O API

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Cc: Trond Myklebust <trond.myklebust@...>, Christoph Hellwig <hch@...>, Brad Boyer <flar@...>, Anton Altaparmakov <aia21@...>, Andreas Dilger <adilger@...>, Gary Grider <ggrider@...>, <linux-fsdevel@...>
Date: Tuesday, December 5, 2006 - 7:20 pm

On Mon, 4 Dec 2006, Peter Staubach wrote:

Are you referring to the work the server must do to gather stat 
information for each inode?


Why can't the client send the over the wire READDIRPLUS without flushing 
inode data, and then simply ignore the stat portion of the server's 
response in instances where it's locally cached (and dirty) inode data is 
newer than the server's?


If the application calls readdirplus() only when it would otherwise do 
readdir()+stat(), the flushing you mention would happen anyway (from the 
stat()).  Wouldn't this at least allow that to happen in parallel for the 
whole directory?

sage
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Messages in current thread:
NFSv4/pNFS possible POSIX I/O API standards, Gary Grider, (Tue Nov 28, 12:34 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Matthew Wilcox, (Tue Nov 28, 11:08 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Tue Nov 28, 1:54 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Wed Nov 29, 5:04 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Matthew Wilcox, (Wed Nov 29, 8:23 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Wed Nov 29, 8:39 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Rob Ross, (Fri Dec 1, 6:29 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Latchesar Ionkov, (Fri Dec 1, 10:35 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Rob Ross, (Mon Dec 4, 8:37 pm)
Re: Re: NFSv4/pNFS possible POSIX I/O API standards, Latchesar Ionkov, (Tue Dec 5, 12:47 pm)
Re: Re: NFSv4/pNFS possible POSIX I/O API standards, David Chinner, (Wed Dec 6, 5:48 am)
openg and path_to_handle, Rob Ross, (Wed Dec 6, 11:53 am)
Re: openg and path_to_handle, Latchesar Ionkov, (Wed Dec 6, 7:19 pm)
Re: openg and path_to_handle, Rob Ross, (Thu Dec 14, 5:00 pm)
Re: openg and path_to_handle, Matthew Wilcox, (Thu Dec 14, 5:20 pm)
Re: openg and path_to_handle, Rob Ross, (Thu Dec 14, 7:02 pm)
Re: openg and path_to_handle, David Chinner, (Wed Dec 6, 4:40 pm)
Re: openg and path_to_handle, Rob Ross, (Wed Dec 6, 4:50 pm)
Re: openg and path_to_handle, David Chinner, (Wed Dec 6, 5:01 pm)
Re: openg and path_to_handle, Matthew Wilcox, (Wed Dec 6, 4:50 pm)
Re: openg and path_to_handle, Andreas Dilger, (Wed Dec 6, 6:09 pm)
Re: openg and path_to_handle, Christoph Hellwig, (Wed Dec 6, 7:39 pm)
Re: openg and path_to_handle, Rob Ross, (Thu Dec 14, 6:52 pm)
Re: openg and path_to_handle, Matthew Wilcox, (Wed Dec 6, 6:17 pm)
Re: openg and path_to_handle, Andreas Dilger, (Wed Dec 6, 6:41 pm)
Re: openg and path_to_handle, David Chinner, (Wed Dec 6, 5:09 pm)
Re: openg and path_to_handle, Matthew Wilcox, (Wed Dec 6, 12:04 pm)
Re: openg and path_to_handle, Rob Ross, (Wed Dec 6, 12:20 pm)
Re: openg and path_to_handle, David Chinner, (Wed Dec 6, 4:57 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Rob Ross, (Tue Dec 5, 5:44 pm)
Re: Re: NFSv4/pNFS possible POSIX I/O API standards, Latchesar Ionkov, (Wed Dec 6, 7:25 pm)
openg, Christoph Hellwig, (Wed Dec 6, 7:01 am)
Re: openg, Rob Ross, (Wed Dec 6, 11:42 am)
Re: openg, Christoph Hellwig, (Wed Dec 6, 7:32 pm)
Re: openg, Rob Ross, (Thu Dec 14, 7:36 pm)
Re: openg, Trond Myklebust, (Wed Dec 6, 11:41 am)
Re: Re: NFSv4/pNFS possible POSIX I/O API standards, Matthew Wilcox, (Tue Dec 5, 1:01 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Peter Staubach, (Tue Dec 5, 5:50 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Tue Dec 5, 6:02 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Matthew Wilcox, (Wed Nov 29, 8:35 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Gary Grider, (Wed Nov 29, 12:26 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Wed Nov 29, 1:18 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Andreas Dilger, (Wed Nov 29, 5:48 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Ric Wheeler, (Fri Dec 1, 11:52 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Steven Whitehouse, (Wed Nov 29, 6:25 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Thu Nov 30, 8:29 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Anton Altaparmakov, (Wed Nov 29, 6:18 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Brad Boyer, (Wed Nov 29, 4:26 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Thu Nov 30, 5:25 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Sage Weil, (Thu Nov 30, 1:49 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Trond Myklebust, (Fri Dec 1, 1:26 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Sage Weil, (Fri Dec 1, 3:08 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Trond Myklebust, (Fri Dec 1, 10:41 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Andreas Dilger, (Sat Dec 2, 9:52 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Sage Weil, (Sun Dec 3, 12:10 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Andreas Dilger, (Mon Dec 4, 3:32 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Trond Myklebust, (Mon Dec 4, 11:15 am)
Re: readdirplus() as possible POSIX I/O API, Andreas Dilger, (Tue Dec 5, 6:26 am)
Re: Re: readdirplus() as possible POSIX I/O API, Latchesar Ionkov, (Tue Dec 5, 1:06 pm)
Re: readdirplus() as possible POSIX I/O API, Rob Ross, (Tue Dec 5, 6:48 pm)
Re: readdirplus() as possible POSIX I/O API, Trond Myklebust, (Tue Dec 5, 11:23 am)
Re: readdirplus() as possible POSIX I/O API, Andreas Dilger, (Wed Dec 6, 6:28 am)
Re: readdirplus() as possible POSIX I/O API, Trond Myklebust, (Wed Dec 6, 11:10 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Rob Ross, (Mon Dec 4, 8:59 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Peter Staubach, (Tue Dec 5, 10:37 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Trond Myklebust, (Tue Dec 5, 1:56 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Tue Dec 5, 6:07 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Rob Ross, (Tue Dec 5, 5:50 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Tue Dec 5, 6:05 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Nikita Danilov, (Thu Dec 7, 7:39 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Ulrich Drepper, (Tue Dec 5, 7:55 pm)
statlite(), Rob Ross, (Thu Dec 14, 7:58 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Andreas Dilger, (Wed Dec 6, 6:06 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Ulrich Drepper, (Wed Dec 6, 1:19 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Rob Ross, (Wed Dec 6, 1:27 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Ulrich Drepper, (Wed Dec 6, 1:42 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Andreas Dilger, (Thu Dec 7, 1:57 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Ulrich Drepper, (Fri Dec 15, 6:37 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Andreas Dilger, (Sat Dec 16, 2:13 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Ulrich Drepper, (Sat Dec 16, 3:08 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Ulrich Drepper, (Wed Dec 6, 2:13 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Ragnar , (Sun Dec 17, 10:41 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Ulrich Drepper, (Sun Dec 17, 3:07 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Matthew Wilcox, (Sun Dec 17, 3:38 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Ulrich Drepper, (Sun Dec 17, 5:51 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Ragnar , (Sun Dec 17, 10:57 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Gary Grider, (Sun Dec 17, 11:54 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Sage Weil, (Tue Dec 5, 7:18 pm)
Re: Re: NFSv4/pNFS possible POSIX I/O API standards, Latchesar Ionkov, (Tue Dec 5, 12:55 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Tue Dec 5, 6:12 pm)
Re: Re: NFSv4/pNFS possible POSIX I/O API standards, Latchesar Ionkov, (Wed Dec 6, 7:12 pm)
Re: Re: NFSv4/pNFS possible POSIX I/O API standards, Trond Myklebust, (Wed Dec 6, 7:33 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Trond Myklebust, (Tue Dec 5, 10:55 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Trond Myklebust, (Wed Dec 6, 11:14 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Rob Ross, (Tue Dec 5, 6:11 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Trond Myklebust, (Tue Dec 5, 7:24 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Rob Ross, (Wed Dec 6, 12:42 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Matthew Wilcox, (Tue Dec 5, 10:20 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Rob Ross, (Wed Dec 6, 11:04 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Matthew Wilcox, (Wed Dec 6, 11:44 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Rob Ross, (Wed Dec 6, 12:15 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Gary Grider, (Tue Dec 5, 12:44 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Tue Dec 5, 6:05 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Sage Weil, (Fri Dec 1, 12:47 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Trond Myklebust, (Fri Dec 1, 2:07 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Andreas Dilger, (Sat Dec 2, 9:57 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Sage Weil, (Fri Dec 1, 2:42 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Peter Staubach, (Mon Dec 4, 2:02 pm)
Re: readdirplus() as possible POSIX I/O API, Sage Weil, (Tue Dec 5, 7:20 pm)
Re: readdirplus() as possible POSIX I/O API, Peter Staubach, (Wed Dec 6, 11:48 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Trond Myklebust, (Fri Dec 1, 3:13 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Sage Weil, (Fri Dec 1, 4:32 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Wed Nov 29, 5:14 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Andreas Dilger, (Tue Nov 28, 6:54 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Wendy Cheng, (Tue Nov 28, 7:28 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Christoph Hellwig, (Wed Nov 29, 5:12 am)
Re: NFSv4/pNFS possible POSIX I/O API standards, Russell Cattelan, (Tue Nov 28, 4:17 pm)
Re: NFSv4/pNFS possible POSIX I/O API standards, Anton Altaparmakov, (Tue Nov 28, 7:28 am)