Trond Myklebust a88fd5847b NFSv4.1: Fix the r/wsize checking
commit 943cff67b842839f4f35364ba2db5c2d3f025d94 upstream.

The intention of nfs4_session_set_rwsize() was to cap the r/wsize to the
buffer sizes negotiated by the CREATE_SESSION. The initial code had a
bug whereby we would not check the values negotiated by nfs_probe_fsinfo()
(the assumption being that CREATE_SESSION will always negotiate buffer values
that are sane w.r.t. the server's preferred r/wsizes) but would only check
values set by the user in the 'mount' command.

The code was changed in 4.11 to _always_ set the r/wsize, meaning that we
now never use the server preferred r/wsizes. This is the regression that
this patch fixes.
Also rename the function to nfs4_session_limit_rwsize() in order to avoid
future confusion.

Fixes: 033853325fe3 (NFSv4.1 respect server's max size in CREATE_SESSION")
Cc: stable@vger.kernel.org # v4.11+
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-11-21 09:27:35 +01:00
..
2017-12-20 10:04:56 +01:00
2017-08-06 19:19:42 -07:00
2017-11-30 08:37:20 +00:00
2018-11-21 09:27:35 +01:00
2018-09-15 09:40:41 +02:00
2015-11-23 21:11:08 -05:00
2018-07-03 11:21:34 +02:00
2018-06-06 16:46:23 +02:00
2015-11-10 12:07:22 -08:00
2017-06-14 13:16:24 +02:00
2015-11-16 23:54:45 -08:00
2018-05-16 10:06:51 +02:00
2015-11-16 23:54:45 -08:00
2015-08-12 15:28:45 -05:00
2017-06-14 13:16:24 +02:00
2018-02-16 20:09:43 +01:00
2017-06-14 13:16:24 +02:00
2018-09-09 20:04:36 +02:00