Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
x86: make ZERO_PAGE() at least parse its argument
This doesn't really do anything, but at least we now parse teh
ZERO_PAGE() address argument so that we'll catch the most obvious errors
in usage next time they'll happen.
See commit 6a5c5d26c4c6 ("rdma: fix build errors on s390 and MIPS due to
bad ZERO_PAGE use") what happens when we don't have any use of the macro
argument at all.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+1
-1
+1
-1
arch/x86/include/asm/pgtable.h
+1
-1
arch/x86/include/asm/pgtable.h
···
46
46
*/
47
47
extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]
48
48
__visible;
49
-
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
49
+
#define ZERO_PAGE(vaddr) ((void)(vaddr),virt_to_page(empty_zero_page))
50
50
51
51
extern spinlock_t pgd_lock;
52
52
extern struct list_head pgd_list;