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-rw-r--r--drivers/md/dm-pcache/cache_segment.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/md/dm-pcache/cache_segment.c b/drivers/md/dm-pcache/cache_segment.c
index ae57cc261422..9d92e2b067ed 100644
--- a/drivers/md/dm-pcache/cache_segment.c
+++ b/drivers/md/dm-pcache/cache_segment.c
@@ -56,7 +56,10 @@ static int cache_seg_info_load(struct pcache_cache_segment *cache_seg)
ret = -EIO;
goto out;
}
- cache_seg->info_index = cache_seg_info_addr - cache_seg_info_addr_base;
+
+ cache_seg->info_index =
+ ((char *)cache_seg_info_addr - (char *)cache_seg_info_addr_base) /
+ PCACHE_SEG_INFO_SIZE;
out:
mutex_unlock(&cache_seg->info_lock);