From: Ilya Dryomov Date: Wed, 26 Sep 2018 16:03:16 +0000 (+0200) Subject: libceph: bump CEPH_MSG_MAX_DATA_LEN X-Git-Tag: v3.18.126~26 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5a6726d7695d09d1935ccb18b46c870ac23192df;p=profile%2Fwearable%2Fplatform%2Fkernel%2Flinux-3.18-exynos7270.git 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 --- diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h index 07bc359..3a24f07 100644 --- a/include/linux/ceph/libceph.h +++ b/include/linux/ceph/libceph.h @@ -67,7 +67,13 @@ 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"