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mm/rmap.c: remove set but not used variable 'cstart'

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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 cdb07bdea2 ("mm/rmap.c: remove redundant variable cend")

Link: http://lkml.kernel.org/r/20190724141453.38536-1-yuehaibing@huawei.com
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
YueHaibing 2019-09-23 15:34:22 -07:00 committed by Linus Torvalds
parent dbf7684e29
commit 1f18b29669
1 changed files with 1 additions and 3 deletions
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4
mm/rmap.c
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@ -903,10 +903,9 @@ static bool page_mkclean_one(struct page *page, struct vm_area_struct *vma,
mmu_notifier_invalidate_range_start(&range); mmu_notifier_invalidate_range_start(&range);
while (page_vma_mapped_walk(&pvmw)) { while (page_vma_mapped_walk(&pvmw)) {
unsigned long cstart;
int ret = 0; int ret = 0;
cstart = address = pvmw.address; address = pvmw.address;
if (pvmw.pte) { if (pvmw.pte) {
pte_t entry; pte_t entry;
pte_t *pte = pvmw.pte; pte_t *pte = pvmw.pte;
@ -933,7 +932,6 @@ static bool page_mkclean_one(struct page *page, struct vm_area_struct *vma,
entry = pmd_wrprotect(entry); entry = pmd_wrprotect(entry);
entry = pmd_mkclean(entry); entry = pmd_mkclean(entry);
set_pmd_at(vma->vm_mm, address, pmd, entry); set_pmd_at(vma->vm_mm, address, pmd, entry);
cstart &= PMD_MASK;
ret = 1; ret = 1;
#else #else
/* unexpected pmd-mapped page? */ /* unexpected pmd-mapped page? */