From b9bf902e0a6739ba5db697fbd9b8f063dd130618 Mon Sep 17 00:00:00 2001
From: Maxim Levitsky <mlevitsk@redhat.com>
Date: Sun, 16 Feb 2020 16:02:25 +0100
Subject: [PATCH 5/6] gluster: the glfs_io_cbk callback function pointer adds
pre/post stat args
Message-id: <20200216160225.22498-3-mlevitsk@redhat.com>
Patchwork-id: 93880
O-Subject: [RHEL-7.9 qemu-kvm PATCH 2/2] gluster: the glfs_io_cbk callback function pointer adds pre/post stat args
Bugzilla: 1802215
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Max Reitz <mreitz@redhat.com>
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
From: Niels de Vos <ndevos@redhat.com>
The glfs_*_async() functions do a callback once finished. This callback
has changed its arguments, pre- and post-stat structures have been
added. This makes it possible to improve caching, which is useful for
Samba and NFS-Ganesha, but not so much for QEMU. Gluster 6 is the first
release that includes these new arguments.
With an additional detection in ./configure, the new arguments can
conditionally get included in the glfs_io_cbk handler.
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 0e3b891fefacc0e49f3c8ffa3a753b69eb7214d2)
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
RHEL: first chunk of the patch was applied manually due to very
different context, for other chunks conficts were fixed.
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
block/gluster.c | 7 ++++++-
configure | 24 ++++++++++++++++++++++++
2 files changed, 30 insertions(+), 1 deletion(-)
diff --git a/block/gluster.c b/block/gluster.c
index d6160af..dba3e0a 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -571,7 +571,12 @@ static const AIOCBInfo gluster_aiocb_info = {
.cancel = qemu_gluster_aio_cancel,
};
-static void gluster_finish_aiocb(struct glfs_fd *fd, ssize_t ret, void *arg)
+static void gluster_finish_aiocb(struct glfs_fd *fd, ssize_t ret,
+#ifdef CONFIG_GLUSTERFS_IOCB_HAS_STAT
+ struct glfs_stat *pre, struct glfs_stat *post,
+#endif
+ void *arg)
+
{
GlusterAIOCB *acb = (GlusterAIOCB *)arg;
BlockDriverState *bs = acb->common.bs;
diff --git a/configure b/configure
index 70fd06f..34e3acc 100755
--- a/configure
+++ b/configure
@@ -244,6 +244,7 @@ glusterfs=""
glusterfs_discard="no"
virtio_blk_data_plane=""
glusterfs_ftruncate_has_stat="no"
+glusterfs_iocb_has_stat="no"
gtk=""
gtkabi="2.0"
tpm="no"
@@ -2762,6 +2763,25 @@ EOF
if compile_prog "$glusterfs_cflags" "$glusterfs_libs" ; then
glusterfs_ftruncate_has_stat="yes"
fi
+ cat > $TMPC << EOF
+#include <glusterfs/api/glfs.h>
+
+/* new glfs_io_cbk() passes two additional glfs_stat structs */
+static void
+glusterfs_iocb(glfs_fd_t *fd, ssize_t ret, struct glfs_stat *prestat, struct glfs_stat *poststat, void *data)
+{}
+
+int
+main(void)
+{
+ glfs_io_cbk iocb = &glusterfs_iocb;
+ iocb(NULL, 0 , NULL, NULL, NULL);
+ return 0;
+}
+EOF
+ if compile_prog "$glusterfs_cflags" "$glusterfs_libs" ; then
+ glusterfs_iocb_has_stat="yes"
+ fi
else
if test "$glusterfs" = "yes" ; then
feature_not_found "GlusterFS backend support"
@@ -4196,6 +4216,10 @@ if test "$glusterfs_ftruncate_has_stat" = "yes" ; then
echo "CONFIG_GLUSTERFS_FTRUNCATE_HAS_STAT=y" >> $config_host_mak
fi
+if test "$glusterfs_iocb_has_stat" = "yes" ; then
+ echo "CONFIG_GLUSTERFS_IOCB_HAS_STAT=y" >> $config_host_mak
+fi
+
if test "$live_block_migration" = "yes" ; then
echo "CONFIG_LIVE_BLOCK_MIGRATION=y" >> $config_host_mak
fi
--
1.8.3.1