From: Christoph Hellwig Date: Mon, 27 Apr 2015 12:50:13 +0000 (+0200) Subject: nfsd/blocklayout: pretend we can send deviceid notifications X-Git-Tag: omap-for-v4.2/soc-pt1-take2~31^2~6 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=40cdc7a530c7a075557651a071354bb42b99df08;p=pandora-kernel.git nfsd/blocklayout: pretend we can send deviceid notifications Commit df52699e4fcef ("NFSv4.1: Don't cache deviceids that have no notifications") causes the Linux NFS client to stop caching deviceid's unless a server pretends to support deviceid notifications. While this behavior is stupid and the language around this area in rfc5661 is a mess carified by an errata that I submittted, Trond insists on this behavior. Not caching deviceids degrades block layout performance massively as a GETDEVICEINFO is fairly expensive. So add this hack to make the Linux client happy again. Cc: stable@vger.kernel.org Signed-off-by: Christoph Hellwig Signed-off-by: J. Bruce Fields --- Reading git-diff-tree failed