Use proper helpers for 64bit division.
Signed-off-by: David Sterba <dste...@suse.com>
---
fs/btrfs/scrub.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index a2366f041f47..6c8c4535dc43 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -2715,7 +2715,9 @@ static int scrub_find_csum(struct scrub_ctx *sctx, u64
logical, u8 *csum)
if (!sum)
return 0;
- index = ((u32)(logical - sum->bytenr)) / sctx->fs_info->sectorsize;
+ index = div_u64(logical - sum->bytenr, sctx->fs_info->sectorsize);
+ ASSERT(index < UINT_MAX);
+
num_sectors = sum->len / sctx->fs_info->sectorsize;
memcpy(csum, sum->sums + index, sctx->csum_size);
if (index == num_sectors - 1) {
--
2.12.0
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