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