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Diffstat (limited to 'drivers/md/dm-exception-store.c')
-rw-r--r--drivers/md/dm-exception-store.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm-exception-store.c b/drivers/md/dm-exception-store.c
index 192bb8bee..3997f34cf 100644
--- a/drivers/md/dm-exception-store.c
+++ b/drivers/md/dm-exception-store.c
@@ -183,7 +183,7 @@ int dm_exception_store_set_chunk_size(struct dm_exception_store *store,
store->chunk_size = chunk_size;
store->chunk_mask = chunk_size - 1;
- store->chunk_shift = ffs(chunk_size) - 1;
+ store->chunk_shift = __ffs(chunk_size);
return 0;
}