diff mbox series

[v5,1/2] block/gluster: Handle changed glfs_ftruncate signature

Message ID 20190305154634.4609-2-ndevos@redhat.com (mailing list archive)
State New, archived
Headers show
Series block: Gluster 6 compatibility | expand

Commit Message

Niels de Vos March 5, 2019, 3:46 p.m. UTC
From: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>

New versions of Glusters libgfapi.so have an updated glfs_ftruncate()
function that returns additional 'struct stat' structures to enable
advanced caching of attributes. This is useful for file servers, not so
much for QEMU. Nevertheless, the API has changed and needs to be
adopted.

Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
Signed-off-by: Niels de Vos <ndevos@redhat.com>

--
v5: pass default NULL arguments through macro (Daniel P. Berrangé)
v4: rebase to current master branch
v3: define old backwards compatible glfs_ftruncate() macro, from Eric Blake
v2: do a compile check as suggested by Eric Blake
---
 block/gluster.c |  4 ++++
 configure       | 18 ++++++++++++++++++
 2 files changed, 22 insertions(+)

Comments

Stefano Garzarella March 6, 2019, 10:46 a.m. UTC | #1
Hi Niels,

On Tue, Mar 05, 2019 at 04:46:33PM +0100, Niels de Vos wrote:
> From: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
> 
> New versions of Glusters libgfapi.so have an updated glfs_ftruncate()
> function that returns additional 'struct stat' structures to enable
> advanced caching of attributes. This is useful for file servers, not so
> much for QEMU. Nevertheless, the API has changed and needs to be
> adopted.
> 
> Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
> Signed-off-by: Niels de Vos <ndevos@redhat.com>
> 
> --
> v5: pass default NULL arguments through macro (Daniel P. Berrangé)
> v4: rebase to current master branch
> v3: define old backwards compatible glfs_ftruncate() macro, from Eric Blake
> v2: do a compile check as suggested by Eric Blake

to avoid to record these information in the commit message, you should use 3
dashes or move these lines after the 3 dashes below.

> ---
>  block/gluster.c |  4 ++++
>  configure       | 18 ++++++++++++++++++
>  2 files changed, 22 insertions(+)
> 
> diff --git a/block/gluster.c b/block/gluster.c
> index af64330211..f853aa87f4 100644
> --- a/block/gluster.c
> +++ b/block/gluster.c
> @@ -20,6 +20,10 @@
>  #include "qemu/option.h"
>  #include "qemu/cutils.h"
>  
> +#ifdef CONFIG_GLUSTERFS_FTRUNCATE_HAS_STAT
> +# define glfs_ftruncate(fd, offset) glfs_ftruncate(fd, offset, NULL, NULL)
> +#endif
> +
>  #define GLUSTER_OPT_FILENAME        "filename"
>  #define GLUSTER_OPT_VOLUME          "volume"
>  #define GLUSTER_OPT_PATH            "path"
> diff --git a/configure b/configure
> index cefeb8fcce..bbfe587b88 100755
> --- a/configure
> +++ b/configure
> @@ -456,6 +456,7 @@ glusterfs_xlator_opt="no"
>  glusterfs_discard="no"
>  glusterfs_fallocate="no"
>  glusterfs_zerofill="no"
> +glusterfs_ftruncate_has_stat="no"
>  gtk=""
>  gtk_gl="no"
>  tls_priority="NORMAL"
> @@ -4083,6 +4084,19 @@ if test "$glusterfs" != "no" ; then
>        glusterfs_fallocate="yes"
>        glusterfs_zerofill="yes"
>      fi
> +    cat > $TMPC << EOF
> +#include <glusterfs/api/glfs.h>
> +
> +int
> +main(void)
> +{
> +	/* new glfs_ftruncate() passes two additional args */
> +	return glfs_ftruncate(NULL, 0, NULL, NULL);
> +}
> +EOF
> +    if compile_prog "$glusterfs_cflags" "$glusterfs_libs" ; then
> +      glusterfs_ftruncate_has_stat="yes"
> +    fi
>    else
>      if test "$glusterfs" = "yes" ; then
>        feature_not_found "GlusterFS backend support" \
> @@ -6885,6 +6899,10 @@ if test "$glusterfs_zerofill" = "yes" ; then
>    echo "CONFIG_GLUSTERFS_ZEROFILL=y" >> $config_host_mak
>  fi
>  
> +if test "$glusterfs_ftruncate_has_stat" = "yes" ; then
> +  echo "CONFIG_GLUSTERFS_FTRUNCATE_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
> -- 
> 2.20.1
> 
> 

The patch LGTM.

Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>

Thanks,
Stefano
diff mbox series

Patch

diff --git a/block/gluster.c b/block/gluster.c
index af64330211..f853aa87f4 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -20,6 +20,10 @@ 
 #include "qemu/option.h"
 #include "qemu/cutils.h"
 
+#ifdef CONFIG_GLUSTERFS_FTRUNCATE_HAS_STAT
+# define glfs_ftruncate(fd, offset) glfs_ftruncate(fd, offset, NULL, NULL)
+#endif
+
 #define GLUSTER_OPT_FILENAME        "filename"
 #define GLUSTER_OPT_VOLUME          "volume"
 #define GLUSTER_OPT_PATH            "path"
diff --git a/configure b/configure
index cefeb8fcce..bbfe587b88 100755
--- a/configure
+++ b/configure
@@ -456,6 +456,7 @@  glusterfs_xlator_opt="no"
 glusterfs_discard="no"
 glusterfs_fallocate="no"
 glusterfs_zerofill="no"
+glusterfs_ftruncate_has_stat="no"
 gtk=""
 gtk_gl="no"
 tls_priority="NORMAL"
@@ -4083,6 +4084,19 @@  if test "$glusterfs" != "no" ; then
       glusterfs_fallocate="yes"
       glusterfs_zerofill="yes"
     fi
+    cat > $TMPC << EOF
+#include <glusterfs/api/glfs.h>
+
+int
+main(void)
+{
+	/* new glfs_ftruncate() passes two additional args */
+	return glfs_ftruncate(NULL, 0, NULL, NULL);
+}
+EOF
+    if compile_prog "$glusterfs_cflags" "$glusterfs_libs" ; then
+      glusterfs_ftruncate_has_stat="yes"
+    fi
   else
     if test "$glusterfs" = "yes" ; then
       feature_not_found "GlusterFS backend support" \
@@ -6885,6 +6899,10 @@  if test "$glusterfs_zerofill" = "yes" ; then
   echo "CONFIG_GLUSTERFS_ZEROFILL=y" >> $config_host_mak
 fi
 
+if test "$glusterfs_ftruncate_has_stat" = "yes" ; then
+  echo "CONFIG_GLUSTERFS_FTRUNCATE_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