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| author | Andy Adamson <andros@netapp.com> | 2009-09-23 21:32:21 -0400 |
|---|---|---|
| committer | J. Bruce Fields <bfields@citi.umich.edu> | 2009-09-28 12:40:15 -0400 |
| commit | ddc04fd4d5163aee9ebdb38a56c365b602e2b7b7 (patch) | |
| tree | 6cb3c4abed9f0cbefbd2086c6e946ac312684f61 /Documentation/filesystems | |
| parent | f39bde24b275ddc45df1ed835725b609e178c7a0 (diff) | |
| download | op-kernel-dev-ddc04fd4d5163aee9ebdb38a56c365b602e2b7b7.zip op-kernel-dev-ddc04fd4d5163aee9ebdb38a56c365b602e2b7b7.tar.gz | |
nfsd41: use sv_max_mesg for forechannel max sizes
ca_maxresponsesize and ca_maxrequest size include the RPC header.
sv_max_mesg is sv_max_payolad plus a page for overhead and is used in
svc_init_buffer to allocate server buffer space for both the request and reply.
Note that this means we can service an RPC compound that requires
ca_maxrequestsize (MAXWRITE) or ca_max_responsesize (MAXREAD) but that we do
not support an RPC compound that requires both ca_maxrequestsize and
ca_maxresponsesize.
Signed-off-by: Andy Adamson <andros@netapp.com>
[bfields@citi.umich.edu: more documentation updates]
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/nfs41-server.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/filesystems/nfs41-server.txt b/Documentation/filesystems/nfs41-server.txt index 1f95e77..1bd0d0c 100644 --- a/Documentation/filesystems/nfs41-server.txt +++ b/Documentation/filesystems/nfs41-server.txt @@ -213,3 +213,10 @@ The following cases aren't supported yet: DESTROY_CLIENTID, DESTROY_SESSION, EXCHANGE_ID. * DESTROY_SESSION MUST be the final operation in the COMPOUND request. +Nonstandard compound limitations: +* No support for a sessions fore channel RPC compound that requires both a + ca_maxrequestsize request and a ca_maxresponsesize reply, so we may + fail to live up to the promise we made in CREATE_SESSION fore channel + negotiation. +* No more than one IO operation (read, write, readdir) allowed per + compound. |
