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| author | Liu Xiang <liu.xiang@zlingsmart.com> | 2020-12-15 06:12:05 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 23:13:44 +0300 |
| commit | 0a4f3d1bb91cac4efdd780373638b6a1a4c24c51 (patch) | |
| tree | ce7178171289186ab535a0043e2e299e3eaf7f85 /mm/hugetlb.c | |
| parent | 336e6b53d99ae32ee35c1a7d3d0f99db22e1ff51 (diff) | |
| download | linux-0a4f3d1bb91cac4efdd780373638b6a1a4c24c51.tar.xz | |
mm: hugetlb: fix type of delta parameter and related local variables in gather_surplus_pages()
On 64-bit machine, delta variable in hugetlb_acct_memory() may be larger
than 0xffffffff, but gather_surplus_pages() can only use the low 32-bit
value now. So we need to fix type of delta parameter and related local
variables in gather_surplus_pages().
Link: https://lkml.kernel.org/r/1605793733-3573-1-git-send-email-liu.xiang@zlingsmart.com
Reported-by: Ma Chenggong <ma.chenggong@zlingsmart.com>
Signed-off-by: Liu Xiang <liu.xiang@zlingsmart.com>
Signed-off-by: Pan Jiagen <pan.jiagen@zlingsmart.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Liu Xiang <liuxiang_1999@126.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/hugetlb.c')
| -rw-r--r-- | mm/hugetlb.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 987d4b57ab0d..70ecc1538499 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1944,13 +1944,14 @@ struct page *alloc_huge_page_vma(struct hstate *h, struct vm_area_struct *vma, * Increase the hugetlb pool such that it can accommodate a reservation * of size 'delta'. */ -static int gather_surplus_pages(struct hstate *h, int delta) +static int gather_surplus_pages(struct hstate *h, long delta) __must_hold(&hugetlb_lock) { struct list_head surplus_list; struct page *page, *tmp; - int ret, i; - int needed, allocated; + int ret; + long i; + long needed, allocated; bool alloc_ok = true; needed = (h->resv_huge_pages + delta) - h->free_huge_pages; |