Le 14/06/2020 à 20:57, Chuck Lever a écrit :
Hi Christophe -
On Jun 14, 2020, at 1:07 PM, Christophe Leroy <christophe.le...@csgroup.eu>
wrote:
Even if that's only a warning, not including asm/cacheflush.h
leads to svc_flush_bvec() being empty allthough powerpc defines
ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE.
CC net/sunrpc/svcsock.o
net/sunrpc/svcsock.c:227:5: warning: "ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE" is not
defined [-Wundef]
#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
^
Fixes: ca07eda33e01 ("SUNRPC: Refactor svc_recvfrom()")
Signed-off-by: Christophe Leroy <christophe.le...@csgroup.eu>
---
I detected this on linux-next on June 4th and warned Chuck. Seems like it went
into mainline anyway.
Thanks for your patch. I've searched my mailbox. It appears I never
received your June 4th e-mail.
It is there:
https://lore.kernel.org/linuxppc-dev/868915eb-8fed-0600-ea5d-31ae87445...@csgroup.eu/
Does your patch also address:
https://marc.info/?l=linux-kernel&m=159194369128024&w=2 ?
I guess it does, yes.
If so, then
Reported-by: kernel test robot <l...@intel.com>
should be added to the patch description.
Ideally, compilation on x86_64 should have thrown the same warning,
but it didn't. Why would the x86_64 build behave differently than
ppc64 or i386?
I think it depends whether you have selected CONFIG_BLOCK or not.
In my embedded config, CONFIG_BLOCK isn't selected.
When CONFIG_BLOCK is selected, there is the following inclusion chain:
CC net/sunrpc/svcsock.o
In file included from ./include/linux/highmem.h:12:0,
from ./include/linux/pagemap.h:11,
from ./include/linux/blkdev.h:16,
from ./include/linux/blk-cgroup.h:23,
from ./include/linux/writeback.h:14,
from ./include/linux/memcontrol.h:22,
from ./include/net/sock.h:53,
from ./include/net/inet_sock.h:22,
from ./include/linux/udp.h:16,
from net/sunrpc/svcsock.c:31:
./arch/powerpc/include/asm/cacheflush.h:26:2: warning: #warning Coucous
[-Wcpp]
#warning test
But linux/blkdev.h includes linux/pagemap.h only when CONFIG_BLOCK is
defined.
net/sunrpc/svcsock.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 5c4ec9386f81..d9e99cb09aab 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -45,6 +45,7 @@
#include <net/tcp_states.h>
#include <linux/uaccess.h>
#include <asm/ioctls.h>
+#include <asm/cacheflush.h>
Nit: Let's include <linux/highmem.h> in net/sunrpc/svcsock.h instead
of <asm/cacheflush.h> directly.
Ok, I'll post v2.
#include <linux/sunrpc/types.h>
#include <linux/sunrpc/clnt.h>
--
2.25.0
--
Chuck Lever
Christophe
