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-rw-r--r--include/linux/blkdev.h7
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index c9d233e727f2..acb4f7bbbd32 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1188,13 +1188,14 @@ static inline int queue_discard_alignment(struct request_queue *q)
static inline int queue_limit_discard_alignment(struct queue_limits *lim, sector_t sector)
{
- unsigned int alignment = (sector << 9) & (lim->discard_granularity - 1);
+ sector_t alignment = sector << 9;
+ alignment = sector_div(alignment, lim->discard_granularity);
if (!lim->max_discard_sectors)
return 0;
- return (lim->discard_granularity + lim->discard_alignment - alignment)
- & (lim->discard_granularity - 1);
+ alignment = lim->discard_granularity + lim->discard_alignment - alignment;
+ return sector_div(alignment, lim->discard_granularity);
}
static inline int bdev_discard_alignment(struct block_device *bdev)