netfs: Add a tracepoint to log failures that would be otherwise unseen
authorDavid Howells <dhowells@redhat.com>
Tue, 6 Apr 2021 16:31:54 +0000 (17:31 +0100)
committerDavid Howells <dhowells@redhat.com>
Fri, 23 Apr 2021 09:14:32 +0000 (10:14 +0100)
commit0246f3e5737d0b083baefa552fecedd90832dad0
tree696abf42d2cb0713af5db7ee950834d11cac8af6
parent726218fdc22c9b52f16e1228499a804bbf262a20
netfs: Add a tracepoint to log failures that would be otherwise unseen

Add a tracepoint to log internal failures (such as cache errors) that we
don't otherwise want to pass back to the netfs.

Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: Jeff Layton <jlayton@kernel.org>
Tested-by: Dave Wysochanski <dwysocha@redhat.com>
Tested-By: Marc Dionne <marc.dionne@auristor.com>
cc: Matthew Wilcox <willy@infradead.org>
cc: linux-mm@kvack.org
cc: linux-cachefs@redhat.com
cc: linux-afs@lists.infradead.org
cc: linux-nfs@vger.kernel.org
cc: linux-cifs@vger.kernel.org
cc: ceph-devel@vger.kernel.org
cc: v9fs-developer@lists.sourceforge.net
cc: linux-fsdevel@vger.kernel.org
Link: https://lore.kernel.org/r/161781048813.463527.1557000804674707986.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/161789082749.6155.15498680577213140870.stgit@warthog.procyon.org.uk/
fs/netfs/read_helper.c
include/trace/events/netfs.h