* [Qemu-devel] [PATCH] virtio-9p: fix QEMU build break
@ 2011-10-10 10:30 Zhi Yong Wu
2011-10-10 16:35 ` Aneesh Kumar K.V
0 siblings, 1 reply; 6+ messages in thread
From: Zhi Yong Wu @ 2011-10-10 10:30 UTC (permalink / raw)
To: qemu-devel; +Cc: stefanha, kvm, jvrao, zwu.kernel, Zhi Yong Wu, aneesh.kumar
qemu build break due to the redefinition of struct file_handle. My qemu.git/HEAD is 8acbc9b21d757a6be4f8492e547b8159703a0547
Below is the log:
[root@f15 qemu]# make
CC qapi-generated/qga-qapi-types.o
LINK qemu-ga
CC libhw64/9pfs/virtio-9p-handle.o
/home/zwu/work/virt/qemu/hw/9pfs/virtio-9p-handle.c:31:8: error: redefinition of "struct file_handle"
/usr/include/bits/fcntl.h:254:8: note: originally defined here
make[1]: *** [9pfs/virtio-9p-handle.o] Error 1
make: *** [subdir-libhw64] Error 2
[root@f15 qemu]# rpm -qf /usr/include/bits/fcntl.h
glibc-headers-2.13.90-9.x86_64
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
---
hw/9pfs/virtio-9p-handle.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/hw/9pfs/virtio-9p-handle.c b/hw/9pfs/virtio-9p-handle.c
index 5c8b5ed..5b3a867 100644
--- a/hw/9pfs/virtio-9p-handle.c
+++ b/hw/9pfs/virtio-9p-handle.c
@@ -27,7 +27,7 @@ struct handle_data {
int handle_bytes;
};
-#if __GLIBC__ <= 2 && __GLIBC_MINOR__ < 14
+#if __GLIBC__ <= 2 && __GLIBC_MINOR__ < 13
struct file_handle {
unsigned int handle_bytes;
int handle_type;
--
1.7.6
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [PATCH] virtio-9p: fix QEMU build break
2011-10-10 10:30 [Qemu-devel] [PATCH] virtio-9p: fix QEMU build break Zhi Yong Wu
@ 2011-10-10 16:35 ` Aneesh Kumar K.V
2011-10-10 16:49 ` Aneesh Kumar K.V
0 siblings, 1 reply; 6+ messages in thread
From: Aneesh Kumar K.V @ 2011-10-10 16:35 UTC (permalink / raw)
To: Zhi Yong Wu, qemu-devel; +Cc: zwu.kernel, stefanha, kvm, jvrao
On Mon, 10 Oct 2011 18:30:28 +0800, Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> wrote:
> qemu build break due to the redefinition of struct file_handle. My qemu.git/HEAD is 8acbc9b21d757a6be4f8492e547b8159703a0547
>
> Below is the log:
> [root@f15 qemu]# make
> CC qapi-generated/qga-qapi-types.o
> LINK qemu-ga
> CC libhw64/9pfs/virtio-9p-handle.o
> /home/zwu/work/virt/qemu/hw/9pfs/virtio-9p-handle.c:31:8: error: redefinition of "struct file_handle"
> /usr/include/bits/fcntl.h:254:8: note: originally defined here
> make[1]: *** [9pfs/virtio-9p-handle.o] Error 1
> make: *** [subdir-libhw64] Error 2
>
> [root@f15 qemu]# rpm -qf /usr/include/bits/fcntl.h
> glibc-headers-2.13.90-9.x86_64
>
Is this a backported glibc ? On my ubuntu system glibc 2.13 doesn't
provide struct file_handle. I also checked glib repo at
http://repo.or.cz/w/glibc.git. The commit introducing struct file_handle
is
$ git describe --contains 158648c0bdda281e252a27c0200dd0ea6f4e0215
glibc-2.14~200
> Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
> ---
> hw/9pfs/virtio-9p-handle.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/hw/9pfs/virtio-9p-handle.c b/hw/9pfs/virtio-9p-handle.c
> index 5c8b5ed..5b3a867 100644
> --- a/hw/9pfs/virtio-9p-handle.c
> +++ b/hw/9pfs/virtio-9p-handle.c
> @@ -27,7 +27,7 @@ struct handle_data {
> int handle_bytes;
> };
>
> -#if __GLIBC__ <= 2 && __GLIBC_MINOR__ < 14
> +#if __GLIBC__ <= 2 && __GLIBC_MINOR__ < 13
> struct file_handle {
> unsigned int handle_bytes;
> int handle_type;
> --
-aneesh
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [PATCH] virtio-9p: fix QEMU build break
2011-10-10 16:35 ` Aneesh Kumar K.V
@ 2011-10-10 16:49 ` Aneesh Kumar K.V
2011-10-11 6:09 ` Zhi Yong Wu
2011-10-18 3:46 ` David Gibson
0 siblings, 2 replies; 6+ messages in thread
From: Aneesh Kumar K.V @ 2011-10-10 16:49 UTC (permalink / raw)
To: Zhi Yong Wu, qemu-devel; +Cc: zwu.kernel, stefanha, kvm, jvrao
On Mon, 10 Oct 2011 22:05:21 +0530, "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> wrote:
> On Mon, 10 Oct 2011 18:30:28 +0800, Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> wrote:
> > qemu build break due to the redefinition of struct file_handle. My qemu.git/HEAD is 8acbc9b21d757a6be4f8492e547b8159703a0547
> >
> > Below is the log:
> > [root@f15 qemu]# make
> > CC qapi-generated/qga-qapi-types.o
> > LINK qemu-ga
> > CC libhw64/9pfs/virtio-9p-handle.o
> > /home/zwu/work/virt/qemu/hw/9pfs/virtio-9p-handle.c:31:8: error: redefinition of "struct file_handle"
> > /usr/include/bits/fcntl.h:254:8: note: originally defined here
> > make[1]: *** [9pfs/virtio-9p-handle.o] Error 1
> > make: *** [subdir-libhw64] Error 2
> >
> > [root@f15 qemu]# rpm -qf /usr/include/bits/fcntl.h
> > glibc-headers-2.13.90-9.x86_64
> >
>
> Is this a backported glibc ? On my ubuntu system glibc 2.13 doesn't
> provide struct file_handle. I also checked glib repo at
> http://repo.or.cz/w/glibc.git. The commit introducing struct file_handle
> is
>
> $ git describe --contains 158648c0bdda281e252a27c0200dd0ea6f4e0215
> glibc-2.14~200
>
>
How about the below patch. This means that handle driver will only work
with latest glibc. Even if i have latest kernel, with an older glibc
handle fs driver backed will be disabled.
diff --git a/configure b/configure
index 24b8df4..0216c53 100755
--- a/configure
+++ b/configure
@@ -2551,6 +2551,18 @@ EOF
fi
##########################################
+# check if we have open_by_handle_at
+
+open_by_hande_at=no
+cat > $TMPC << EOF
+#include <fcntl.h>
+int main(void) { struct file_handle *fh; open_by_handle_at(0, fh, 0); }
+EOF
+if compile_prog "" "" ; then
+ open_by_handle_at=yes
+fi
+
+##########################################
# End of CC checks
# After here, no more $cc or $ld runs
@@ -3029,6 +3041,10 @@ if test "$ucontext_coroutine" = "yes" ; then
echo "CONFIG_UCONTEXT_COROUTINE=y" >> $config_host_mak
fi
+if test "$open_by_handle_at" = "yes" ; then
+ echo "CONFIG_OPEN_BY_HANDLE=y" >> $config_host_mak
+fi
+
# USB host support
case "$usb" in
linux)
diff --git a/hw/9pfs/virtio-9p-handle.c b/hw/9pfs/virtio-9p-handle.c
index 68e1d9b..bd73d31 100644
--- a/hw/9pfs/virtio-9p-handle.c
+++ b/hw/9pfs/virtio-9p-handle.c
@@ -30,13 +30,24 @@ struct handle_data {
int handle_bytes;
};
-#if __GLIBC__ <= 2 && __GLIBC_MINOR__ < 14
+#ifdef CONFIG_OPEN_BY_HANDLE
+static inline int name_to_handle(int dirfd, const char *name,
+ struct file_handle *fh, int *mnt_id, int flags)
+{
+ return name_to_handle_at(dirfd, name, fh, mnt_id, flags);
+}
+
+static inline int open_by_handle(int mountfd, const char *fh, int flags)
+{
+ return open_by_handle_at(mountfd, fh, flags);
+}
+#else
+
struct file_handle {
- unsigned int handle_bytes;
- int handle_type;
- unsigned char handle[0];
+ unsigned int handle_bytes;
+ int handle_type;
+ unsigned char handle[0];
};
-#endif
#ifndef AT_EMPTY_PATH
#define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */
@@ -45,28 +56,6 @@ struct file_handle {
#define O_PATH 010000000
#endif
-#ifndef __NR_name_to_handle_at
-#if defined(__i386__)
-#define __NR_name_to_handle_at 341
-#define __NR_open_by_handle_at 342
-#elif defined(__x86_64__)
-#define __NR_name_to_handle_at 303
-#define __NR_open_by_handle_at 304
-#endif
-#endif
-
-#ifdef __NR_name_to_handle_at
-static inline int name_to_handle(int dirfd, const char *name,
- struct file_handle *fh, int *mnt_id, int flags)
-{
- return syscall(__NR_name_to_handle_at, dirfd, name, fh, mnt_id, flags);
-}
-
-static inline int open_by_handle(int mountfd, const char *fh, int flags)
-{
- return syscall(__NR_open_by_handle_at, mountfd, fh, flags);
-}
-#else
static inline int name_to_handle(int dirfd, const char *name,
struct file_handle *fh, int *mnt_id, int flags)
{
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [PATCH] virtio-9p: fix QEMU build break
2011-10-10 16:49 ` Aneesh Kumar K.V
@ 2011-10-11 6:09 ` Zhi Yong Wu
2011-10-18 3:46 ` David Gibson
1 sibling, 0 replies; 6+ messages in thread
From: Zhi Yong Wu @ 2011-10-11 6:09 UTC (permalink / raw)
To: Aneesh Kumar K.V; +Cc: Zhi Yong Wu, jvrao, qemu-devel, kvm, stefanha
On Tue, Oct 11, 2011 at 12:49 AM, Aneesh Kumar K.V
<aneesh.kumar@linux.vnet.ibm.com> wrote:
> On Mon, 10 Oct 2011 22:05:21 +0530, "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> wrote:
>> On Mon, 10 Oct 2011 18:30:28 +0800, Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> wrote:
>> > qemu build break due to the redefinition of struct file_handle. My qemu.git/HEAD is 8acbc9b21d757a6be4f8492e547b8159703a0547
>> >
>> > Below is the log:
>> > [root@f15 qemu]# make
>> > CC qapi-generated/qga-qapi-types.o
>> > LINK qemu-ga
>> > CC libhw64/9pfs/virtio-9p-handle.o
>> > /home/zwu/work/virt/qemu/hw/9pfs/virtio-9p-handle.c:31:8: error: redefinition of "struct file_handle"
>> > /usr/include/bits/fcntl.h:254:8: note: originally defined here
>> > make[1]: *** [9pfs/virtio-9p-handle.o] Error 1
>> > make: *** [subdir-libhw64] Error 2
>> >
>> > [root@f15 qemu]# rpm -qf /usr/include/bits/fcntl.h
>> > glibc-headers-2.13.90-9.x86_64
>> >
>>
>> Is this a backported glibc ? On my ubuntu system glibc 2.13 doesn't
>> provide struct file_handle. I also checked glib repo at
>> http://repo.or.cz/w/glibc.git. The commit introducing struct file_handle
>> is
>>
>> $ git describe --contains 158648c0bdda281e252a27c0200dd0ea6f4e0215
>> glibc-2.14~200
>>
>>
>
> How about the below patch. This means that handle driver will only work
> with latest glibc. Even if i have latest kernel, with an older glibc
> handle fs driver backed will be disabled.
>
> diff --git a/configure b/configure
> index 24b8df4..0216c53 100755
> --- a/configure
> +++ b/configure
> @@ -2551,6 +2551,18 @@ EOF
> fi
>
> ##########################################
> +# check if we have open_by_handle_at
> +
> +open_by_hande_at=no
> +cat > $TMPC << EOF
> +#include <fcntl.h>
> +int main(void) { struct file_handle *fh; open_by_handle_at(0, fh, 0); }
> +EOF
> +if compile_prog "" "" ; then
> + open_by_handle_at=yes
> +fi
> +
> +##########################################
> # End of CC checks
> # After here, no more $cc or $ld runs
>
> @@ -3029,6 +3041,10 @@ if test "$ucontext_coroutine" = "yes" ; then
> echo "CONFIG_UCONTEXT_COROUTINE=y" >> $config_host_mak
> fi
>
> +if test "$open_by_handle_at" = "yes" ; then
> + echo "CONFIG_OPEN_BY_HANDLE=y" >> $config_host_mak
> +fi
> +
> # USB host support
> case "$usb" in
> linux)
> diff --git a/hw/9pfs/virtio-9p-handle.c b/hw/9pfs/virtio-9p-handle.c
> index 68e1d9b..bd73d31 100644
> --- a/hw/9pfs/virtio-9p-handle.c
> +++ b/hw/9pfs/virtio-9p-handle.c
> @@ -30,13 +30,24 @@ struct handle_data {
> int handle_bytes;
> };
>
> -#if __GLIBC__ <= 2 && __GLIBC_MINOR__ < 14
> +#ifdef CONFIG_OPEN_BY_HANDLE
> +static inline int name_to_handle(int dirfd, const char *name,
> + struct file_handle *fh, int *mnt_id, int flags)
> +{
> + return name_to_handle_at(dirfd, name, fh, mnt_id, flags);
> +}
> +
> +static inline int open_by_handle(int mountfd, const char *fh, int flags)
> +{
> + return open_by_handle_at(mountfd, fh, flags);
> +}
> +#else
> +
> struct file_handle {
> - unsigned int handle_bytes;
> - int handle_type;
> - unsigned char handle[0];
> + unsigned int handle_bytes;
> + int handle_type;
> + unsigned char handle[0];
> };
> -#endif
>
> #ifndef AT_EMPTY_PATH
> #define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */
> @@ -45,28 +56,6 @@ struct file_handle {
> #define O_PATH 010000000
> #endif
>
> -#ifndef __NR_name_to_handle_at
> -#if defined(__i386__)
> -#define __NR_name_to_handle_at 341
> -#define __NR_open_by_handle_at 342
> -#elif defined(__x86_64__)
> -#define __NR_name_to_handle_at 303
> -#define __NR_open_by_handle_at 304
> -#endif
> -#endif
> -
> -#ifdef __NR_name_to_handle_at
> -static inline int name_to_handle(int dirfd, const char *name,
> - struct file_handle *fh, int *mnt_id, int flags)
> -{
> - return syscall(__NR_name_to_handle_at, dirfd, name, fh, mnt_id, flags);
> -}
> -
> -static inline int open_by_handle(int mountfd, const char *fh, int flags)
> -{
> - return syscall(__NR_open_by_handle_at, mountfd, fh, flags);
> -}
> -#else
> static inline int name_to_handle(int dirfd, const char *name,
> struct file_handle *fh, int *mnt_id, int flags)
> {
>
It doesn't work for me.
CC libhw64/9pfs/virtio-9p-handle.o
/home/zwu/work/virt/qemu/hw/9pfs/virtio-9p-handle.c: In function
\u2018open_by_handle\u2019:
/home/zwu/work/virt/qemu/hw/9pfs/virtio-9p-handle.c:39:5: error:
passing argument 2 of \u2018open_by_handle_at\u2019 from incompatible
pointer type [-Werror]
/usr/include/bits/fcntl.h:335:12: note: expected \u2018struct
file_handle *\u2019 but argument is of type \u2018const char *\u2019
/home/zwu/work/virt/qemu/hw/9pfs/virtio-9p-handle.c: At top level:
/home/zwu/work/virt/qemu/hw/9pfs/virtio-9p-handle.c:30:0: error:
unterminated #else
cc1: all warnings being treated as errors
make[1]: *** [9pfs/virtio-9p-handle.o] Error 1
make: *** [subdir-libhw64] Error 2
--
Regards,
Zhi Yong Wu
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [PATCH] virtio-9p: fix QEMU build break
2011-10-10 16:49 ` Aneesh Kumar K.V
2011-10-11 6:09 ` Zhi Yong Wu
@ 2011-10-18 3:46 ` David Gibson
2011-10-18 4:59 ` Aneesh Kumar K.V
1 sibling, 1 reply; 6+ messages in thread
From: David Gibson @ 2011-10-18 3:46 UTC (permalink / raw)
To: Aneesh Kumar K.V
Cc: stefanha, kvm, jvrao, qemu-devel, zwu.kernel, Zhi Yong Wu
On Mon, Oct 10, 2011 at 10:19:31PM +0530, Aneesh Kumar K.V wrote:
> On Mon, 10 Oct 2011 22:05:21 +0530, "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> wrote:
> > On Mon, 10 Oct 2011 18:30:28 +0800, Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> wrote:
> > > qemu build break due to the redefinition of struct file_handle. My qemu.git/HEAD is 8acbc9b21d757a6be4f8492e547b8159703a0547
> > >
> > > Below is the log:
> > > [root@f15 qemu]# make
> > > CC qapi-generated/qga-qapi-types.o
> > > LINK qemu-ga
> > > CC libhw64/9pfs/virtio-9p-handle.o
> > > /home/zwu/work/virt/qemu/hw/9pfs/virtio-9p-handle.c:31:8: error: redefinition of "struct file_handle"
> > > /usr/include/bits/fcntl.h:254:8: note: originally defined here
> > > make[1]: *** [9pfs/virtio-9p-handle.o] Error 1
> > > make: *** [subdir-libhw64] Error 2
> > >
> > > [root@f15 qemu]# rpm -qf /usr/include/bits/fcntl.h
> > > glibc-headers-2.13.90-9.x86_64
> > >
> >
> > Is this a backported glibc ? On my ubuntu system glibc 2.13 doesn't
> > provide struct file_handle. I also checked glib repo at
> > http://repo.or.cz/w/glibc.git. The commit introducing struct file_handle
> > is
> >
> > $ git describe --contains 158648c0bdda281e252a27c0200dd0ea6f4e0215
> > glibc-2.14~200
> >
> >
>
> How about the below patch. This means that handle driver will only work
> with latest glibc. Even if i have latest kernel, with an older glibc
> handle fs driver backed will be disabled.
This looks like the right approach to me, but at least with my
compiler / libc combinations, the test program isn't quite right:
because the file_handle pointer is never dereferenced, gcc doesn't
complain even if it is undefined.
> diff --git a/configure b/configure
> index 24b8df4..0216c53 100755
> --- a/configure
> +++ b/configure
> @@ -2551,6 +2551,18 @@ EOF
> fi
>
> ##########################################
> +# check if we have open_by_handle_at
> +
> +open_by_hande_at=no
> +cat > $TMPC << EOF
> +#include <fcntl.h>
> +int main(void) { struct file_handle *fh; open_by_handle_at(0, fh, 0); }
Instead, try this:
int main(void) { struct file_handle fh; open_by_handle_at(0, &fh, 0); }
I'd really like to see a patch along these lines merged, so I don't
have to keep hacking it up manually just to get qemu to compile.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] [PATCH] virtio-9p: fix QEMU build break
2011-10-18 3:46 ` David Gibson
@ 2011-10-18 4:59 ` Aneesh Kumar K.V
0 siblings, 0 replies; 6+ messages in thread
From: Aneesh Kumar K.V @ 2011-10-18 4:59 UTC (permalink / raw)
To: David Gibson; +Cc: stefanha, kvm, jvrao, qemu-devel, zwu.kernel, Zhi Yong Wu
On Tue, 18 Oct 2011 14:46:25 +1100, David Gibson <dwg@au1.ibm.com> wrote:
> On Mon, Oct 10, 2011 at 10:19:31PM +0530, Aneesh Kumar K.V wrote:
> > On Mon, 10 Oct 2011 22:05:21 +0530, "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> wrote:
> > > On Mon, 10 Oct 2011 18:30:28 +0800, Zhi Yong Wu <wuzhy@linux.vnet.ibm.com> wrote:
> > > > qemu build break due to the redefinition of struct file_handle. My qemu.git/HEAD is 8acbc9b21d757a6be4f8492e547b8159703a0547
> > > >
> > > > Below is the log:
> > > > [root@f15 qemu]# make
> > > > CC qapi-generated/qga-qapi-types.o
> > > > LINK qemu-ga
> > > > CC libhw64/9pfs/virtio-9p-handle.o
> > > > /home/zwu/work/virt/qemu/hw/9pfs/virtio-9p-handle.c:31:8: error: redefinition of "struct file_handle"
> > > > /usr/include/bits/fcntl.h:254:8: note: originally defined here
> > > > make[1]: *** [9pfs/virtio-9p-handle.o] Error 1
> > > > make: *** [subdir-libhw64] Error 2
> > > >
> > > > [root@f15 qemu]# rpm -qf /usr/include/bits/fcntl.h
> > > > glibc-headers-2.13.90-9.x86_64
> > > >
> > >
> > > Is this a backported glibc ? On my ubuntu system glibc 2.13 doesn't
> > > provide struct file_handle. I also checked glib repo at
> > > http://repo.or.cz/w/glibc.git. The commit introducing struct file_handle
> > > is
> > >
> > > $ git describe --contains 158648c0bdda281e252a27c0200dd0ea6f4e0215
> > > glibc-2.14~200
> > >
> > >
> >
> > How about the below patch. This means that handle driver will only work
> > with latest glibc. Even if i have latest kernel, with an older glibc
> > handle fs driver backed will be disabled.
>
> This looks like the right approach to me, but at least with my
> compiler / libc combinations, the test program isn't quite right:
> because the file_handle pointer is never dereferenced, gcc doesn't
> complain even if it is undefined.
>
>
> > diff --git a/configure b/configure
> > index 24b8df4..0216c53 100755
> > --- a/configure
> > +++ b/configure
> > @@ -2551,6 +2551,18 @@ EOF
> > fi
> >
> > ##########################################
> > +# check if we have open_by_handle_at
> > +
> > +open_by_hande_at=no
> > +cat > $TMPC << EOF
> > +#include <fcntl.h>
> > +int main(void) { struct file_handle *fh; open_by_handle_at(0, fh, 0); }
>
> Instead, try this:
>
> int main(void) { struct file_handle fh; open_by_handle_at(0, &fh, 0); }
>
>
> I'd really like to see a patch along these lines merged, so I don't
> have to keep hacking it up manually just to get qemu to compile.
I did send a pull request with the patch
http://article.gmane.org/gmane.comp.emulators.qemu/120990
I will do a patch on top which will change the configure to what you
suggested above.
-aneesh
^ permalink raw reply [flat|nested] 6+ messages in thread
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2011-10-10 10:30 [Qemu-devel] [PATCH] virtio-9p: fix QEMU build break Zhi Yong Wu
2011-10-10 16:35 ` Aneesh Kumar K.V
2011-10-10 16:49 ` Aneesh Kumar K.V
2011-10-11 6:09 ` Zhi Yong Wu
2011-10-18 3:46 ` David Gibson
2011-10-18 4:59 ` Aneesh Kumar K.V
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