From: YueHaibing <yuehaibing@xxxxxxxxxx>
Subject: mm/rmap.c: remove set but not used variable 'cstart'
Fixes gcc '-Wunused-but-set-variable' warning:
mm/rmap.c: In function page_mkclean_one:
mm/rmap.c:906:17: warning: variable cstart set but not used [-Wunused-but-set-variable]
It is not used any more since
commit cdb07bdea28e ("mm/rmap.c: remove redundant variable cend")
Link: http://lkml.kernel.org/r/20190724141453.38536-1-yuehaibing@xxxxxxxxxx
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Reviewed-by: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/rmap.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/mm/rmap.c~mm-rmapc-remove-set-but-not-used-variable-cstart
+++ a/mm/rmap.c
@@ -903,10 +903,9 @@ static bool page_mkclean_one(struct page
mmu_notifier_invalidate_range_start(&range);
while (page_vma_mapped_walk(&pvmw)) {
- unsigned long cstart;
int ret = 0;
- cstart = address = pvmw.address;
+ address = pvmw.address;
if (pvmw.pte) {
pte_t entry;
pte_t *pte = pvmw.pte;
@@ -933,7 +932,6 @@ static bool page_mkclean_one(struct page
entry = pmd_wrprotect(entry);
entry = pmd_mkclean(entry);
set_pmd_at(vma->vm_mm, address, pmd, entry);
- cstart &= PMD_MASK;
ret = 1;
#else
/* unexpected pmd-mapped page? */
_
