The patch titled
Subject: include/linux/mmdebug.h: make VM_WARN* non-rvals
has been added to the -mm tree. Its filename is
include-linux-mmdebugh-make-vm_warn-non-rvals.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/include-linux-mmdebugh-make-vm_warn-non-rvals.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/include-linux-mmdebugh-make-vm_warn-non-rvals.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Michal Hocko <mhocko@xxxxxxxxxx>
Subject: include/linux/mmdebug.h: make VM_WARN* non-rvals
At present the construct
if (VM_WARN(...))
will compile OK with CONFIG_DEBUG_VM=y and will fail with
CONFIG_DEBUG_VM=n.
We considered changing things so that this construct works in both cases
but that might cause unwanted code generation with CONFIG_DEBUG_VM=n. It
is safer and simpler to make the build fail in both cases.
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
diff -puN include/linux/mmdebug.h~include-linux-mmdebugh-make-vm_warn-non-rvals include/linux/mmdebug.h
--- a/include/linux/mmdebug.h~include-linux-mmdebugh-make-vm_warn-non-rvals
+++ a/include/linux/mmdebug.h
@@ -37,10 +37,10 @@ void dump_mm(const struct mm_struct *mm)
BUG(); \
} \
} while (0)
-#define VM_WARN_ON(cond) WARN_ON(cond)
-#define VM_WARN_ON_ONCE(cond) WARN_ON_ONCE(cond)
-#define VM_WARN_ONCE(cond, format...) WARN_ONCE(cond, format)
-#define VM_WARN(cond, format...) WARN(cond, format)
+#define VM_WARN_ON(cond) (void)WARN_ON(cond)
+#define VM_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond)
+#define VM_WARN_ONCE(cond, format...) (void)WARN_ONCE(cond, format)
+#define VM_WARN(cond, format...) (void)WARN(cond, format)
#else
#define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond)
#define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond)
_
Patches currently in -mm which might be from mhocko@xxxxxxxxxx are
include-linux-mmdebugh-make-vm_warn-non-rvals.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
