From fc07f543a6d39399ba425c5bc588920fbdf65f39 Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Wed, 26 Sep 2018 18:03:16 +0200 Subject: [PATCH] libceph: bump CEPH_MSG_MAX_DATA_LEN commit 94e6992bb560be8bffb47f287194adf070b57695 upstream. If the read is large enough, we end up spinning in the messenger: libceph: osd0 192.168.122.1:6801 io error libceph: osd0 192.168.122.1:6801 io error libceph: osd0 192.168.122.1:6801 io error This is a receive side limit, so only reads were affected. Cc: stable@vger.kernel.org Signed-off-by: Ilya Dryomov Signed-off-by: Greg Kroah-Hartman --- include/linux/ceph/libceph.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index c2ec44c..d3b04f9 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -81,7 +81,13 @@ struct ceph_options { #define CEPH_MSG_MAX_FRONT_LEN (16*1024*1024) #define CEPH_MSG_MAX_MIDDLE_LEN (16*1024*1024) -#define CEPH_MSG_MAX_DATA_LEN (16*1024*1024) + +/* + * Handle the largest possible rbd object in one message. + * There is no limit on the size of cephfs objects, but it has to obey + * rsize and wsize mount options anyway. + */ +#define CEPH_MSG_MAX_DATA_LEN (32*1024*1024) #define CEPH_AUTH_NAME_DEFAULT "guest" -- 2.7.4