libdm: use SECTOR_SHIFT constant in _stats_add_extent()

diff --git a/libdm/libdm-stats.c b/libdm/libdm-stats.c
index 6504289f0d2c8824028b12139f41b016b0e7c166..d911c60d2280e8bff40ac931f6358f02571d3d9c 100644 (file)
--- a/libdm/libdm-stats.c
+++ b/libdm/libdm-stats.c
@@ -38,6 +38,8 @@
 #define STATS_ROW_BUF_LEN 4096
 #define STATS_MSG_BUF_LEN 1024
 
+#define SECTOR_SHIFT 9L
+
 /* Histogram bin */
 struct dm_histogram_bin {
        uint64_t upper; /* Upper bound on this bin. */
@@ -4120,8 +4122,8 @@ static int _stats_add_extent(struct dm_pool *mem, struct fiemap_extent *fm_ext,
        memset(&extent.list, 0, sizeof(extent.list));
 
        /* convert bytes to dm (512b) sectors */
-       extent.start = fm_ext->fe_physical >> 9;
-       extent.len = fm_ext->fe_length >> 9;
+       extent.start = fm_ext->fe_physical >> SECTOR_SHIFT;
+       extent.len = fm_ext->fe_length >> SECTOR_SHIFT;
 
        extent.id = id;