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Re: [PATCH 09/38] svc: Add a transport function that checks for write space

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From: Chuck Lever
Subject: Re: [PATCH 09/38] svc: Add a transport function that checks for write space
Date: Thursday, December 13, 2007 - 2:45 pm

On Dec 13, 2007, at 4:33 PM, J. Bruce Fields wrote:


What stops sk_reserved from going negative?

--
Chuck Lever
chuck[dot]lever[at]oracle[dot]com
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[PATCH 00/38] svc: SVC Transport Switch, Tom Tucker, (Tue Dec 11, 4:31 pm)
[PATCH 01/38] svc: Add an svc transport class, Tom Tucker, (Tue Dec 11, 4:31 pm)
[PATCH 02/38] svc: Make svc_sock the tcp/udp transport, Tom Tucker, (Tue Dec 11, 4:31 pm)
[PATCH 03/38] svc: Change the svc_sock in the rqstp struct ..., Tom Tucker, (Tue Dec 11, 4:31 pm)
[PATCH 04/38] svc: Add a max payload value to the transport, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 05/38] svc: Move sk_sendto and sk_recvfrom to svc_x ..., Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 06/38] svc: Add transport specific xpo_release function, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 07/38] svc: Add per-transport delete functions, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 08/38] svc: Add xpo_prep_reply_hdr, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 09/38] svc: Add a transport function that checks fo ..., Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 10/38] svc: Move close processing to a single place, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 11/38] svc: Add xpo_accept transport function, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 12/38] svc: Add a generic transport svc_create_xprt ..., Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 13/38] svc: Change services to use new svc_create_x ..., Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 14/38] svc: Change sk_inuse to a kref, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 15/38] svc: Move sk_flags to the svc_xprt structure, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 16/38] svc: Move sk_server and sk_pool to svc_xprt, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 17/38] svc: Make close transport independent, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 18/38] svc: Move sk_reserved to svc_xprt, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 19/38] svc: Make the enqueue service transport neut ..., Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 20/38] svc: Make svc_send transport neutral, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 21/38] svc: Change svc_sock_received to svc_xprt_re ..., Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 22/38] svc: Move accept call to svc_xprt_received t ..., Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 23/38] svc: Remove sk_lastrecv, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 24/38] svc: Move the authinfo cache to svc_xprt., Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 25/38] svc: Make deferral processing xprt independent, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 26/38] svc: Move the sockaddr information to svc_xprt, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 27/38] svc: Make svc_sock_release svc_xprt_release, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 28/38] svc: Make svc_recv transport neutral, Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 29/38] svc: Make svc_age_temp_sockets svc_age_temp_ ..., Tom Tucker, (Tue Dec 11, 4:32 pm)
[PATCH 30/38] svc: Move common create logic to common code, Tom Tucker, (Tue Dec 11, 4:33 pm)
[PATCH 31/38] svc: Removing remaining references to rq_soc ..., Tom Tucker, (Tue Dec 11, 4:33 pm)
[PATCH 32/38] svc: Make svc_check_conn_limits xprt independent, Tom Tucker, (Tue Dec 11, 4:33 pm)
[PATCH 33/38] svc: Move the xprt independent code to the s ..., Tom Tucker, (Tue Dec 11, 4:33 pm)
[PATCH 34/38] svc: Add transport hdr size for defer/revisit, Tom Tucker, (Tue Dec 11, 4:33 pm)
[PATCH 35/38] svc: Add /proc/sys/sunrpc/transport files, Tom Tucker, (Tue Dec 11, 4:33 pm)
[PATCH 36/38] svc: Add svc API that queries for a transpor ..., Tom Tucker, (Tue Dec 11, 4:33 pm)
[PATCH 37/38] knfsd: Support adding transports by writing ..., Tom Tucker, (Tue Dec 11, 4:33 pm)
[PATCH 38/38] svc: Add svc_xprt_names service to replace s ..., Tom Tucker, (Tue Dec 11, 4:33 pm)
Re: [PATCH 09/38] svc: Add a transport function that check ..., Chuck Lever, (Wed Dec 12, 11:10 am)
Re: [PATCH 09/38] svc: Add a transport function that check ..., Tom Tucker, (Wed Dec 12, 1:00 pm)
Re: [PATCH 01/38] svc: Add an svc transport class, J. Bruce Fields, (Thu Dec 13, 11:45 am)
Re: [PATCH 02/38] svc: Make svc_sock the tcp/udp transport, J. Bruce Fields, (Thu Dec 13, 12:01 pm)
Re: [PATCH 06/38] svc: Add transport specific xpo_release ..., J. Bruce Fields, (Thu Dec 13, 12:31 pm)
Re: [PATCH 09/38] svc: Add a transport function that check ..., J. Bruce Fields, (Thu Dec 13, 2:33 pm)
Re: [PATCH 09/38] svc: Add a transport function that check ..., Chuck Lever, (Thu Dec 13, 2:45 pm)
Re: [PATCH 09/38] svc: Add a transport function that check ..., Tom Tucker, (Thu Dec 13, 3:20 pm)
Re: [PATCH 09/38] svc: Add a transport function that check ..., J. Bruce Fields, (Thu Dec 13, 3:28 pm)
Re: [PATCH 09/38] svc: Add a transport function that check ..., Chuck Lever, (Fri Dec 14, 6:59 am)
Re: [PATCH 09/38] svc: Add a transport function that check ..., Chuck Lever, (Fri Dec 14, 7:27 am)
Re: [PATCH 11/38] svc: Add xpo_accept transport function, J. Bruce Fields, (Fri Dec 14, 12:01 pm)
Re: [PATCH 11/38] svc: Add xpo_accept transport function, Tom Tucker, (Fri Dec 14, 12:14 pm)
Re: [PATCH 11/38] svc: Add xpo_accept transport function, J. Bruce Fields, (Fri Dec 14, 12:55 pm)
Re: [PATCH 14/38] svc: Change sk_inuse to a kref, J. Bruce Fields, (Fri Dec 14, 1:52 pm)
Re: [PATCH 30/38] svc: Move common create logic to common code, J. Bruce Fields, (Fri Dec 14, 4:19 pm)
Re: [PATCH 34/38] svc: Add transport hdr size for defer/re ..., J. Bruce Fields, (Fri Dec 14, 4:37 pm)
Re: [PATCH 38/38] svc: Add svc_xprt_names service to repla ..., J. Bruce Fields, (Fri Dec 14, 5:03 pm)
Re: [PATCH 11/38] svc: Add xpo_accept transport function, Tom Tucker, (Fri Dec 14, 10:22 pm)
Re: [PATCH 34/38] svc: Add transport hdr size for defer/re ..., Tom Tucker, (Sat Dec 15, 11:16 am)
Re: [PATCH 30/38] svc: Move common create logic to common code, Tom Tucker, (Sat Dec 15, 3:14 pm)