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From 0e3b891fefacc0e49f3c8ffa3a753b69eb7214d2 Mon Sep 17 00:00:00 2001
From: Niels de Vos <ndevos@redhat.com>
Date: Tue, 5 Mar 2019 16:46:34 +0100
Subject: [PATCH] gluster: the glfs_io_cbk callback function pointer adds
pre/post stat args
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>
---
block/gluster.c | 6 +++++-
configure | 24 ++++++++++++++++++++++++
2 files changed, 29 insertions(+), 1 deletion(-)
diff --git a/block/gluster.c b/block/gluster.c
index f853aa8..51f184c 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -729,7 +729,11 @@ static struct glfs *qemu_gluster_init(BlockdevOptionsGluster *gconf,
/*
* AIO callback routine called from GlusterFS thread.
*/
-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;
diff --git a/configure b/configure
index 5354d51..45a3654 100755
--- a/configure
+++ b/configure
@@ -457,6 +457,7 @@ glusterfs_discard="no"
glusterfs_fallocate="no"
glusterfs_zerofill="no"
glusterfs_ftruncate_has_stat="no"
+glusterfs_iocb_has_stat="no"
gtk=""
gtk_gl="no"
tls_priority="NORMAL"
@@ -4105,6 +4106,25 @@ 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" \
@@ -6994,6 +7014,10 @@ 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" >> $config_host_mak
+fi
+
if test "$libssh2" = "yes" ; then
echo "CONFIG_LIBSSH2=m" >> $config_host_mak
echo "LIBSSH2_CFLAGS=$libssh2_cflags" >> $config_host_mak
--
1.8.3.1
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