disk: rename snap_present to snap

There's only one of them now

diff --git a/src/disk.c b/src/disk.c
index bdd3b96..3b8dbb9 100644 (file)
--- a/src/disk.c
+++ b/src/disk.c
@@ -530,8 +530,8 @@ static int disk_read (void)
 #elif KERNEL_FREEBSD
        int retry, dirty;
 
-       void *snap_present = NULL;
-       struct devstat *snap_present_iter;
+       void *snap = NULL;
+       struct devstat *snap_iter;
 
        struct gident *geom_id;
 
@@ -541,33 +541,33 @@ static int disk_read (void)
        long double read_time, write_time;
 
        for (retry = 0, dirty = 1; retry < 5 && dirty == 1; retry++) {
-               if (snap_present != NULL)
-                       geom_stats_snapshot_free(snap_present);
+               if (snap != NULL)
+                       geom_stats_snapshot_free(snap);
 
                /* Get a fresh copy of stats snapshot */
-               snap_present = geom_stats_snapshot_get();
-               if (snap_present == NULL) {
+               snap = geom_stats_snapshot_get();
+               if (snap == NULL) {
                        ERROR("disk plugin: geom_stats_snapshot_get() failed.");
                        return (-1);
                }
 
                /* Check if we have dirty read from this snapshot */
                dirty = 0;
-               geom_stats_snapshot_reset(snap_present);
-               while ((snap_present_iter = geom_stats_snapshot_next(snap_present)) != NULL) {
-                       if (snap_present_iter->id == NULL)
+               geom_stats_snapshot_reset(snap);
+               while ((snap_iter = geom_stats_snapshot_next(snap)) != NULL) {
+                       if (snap_iter->id == NULL)
                                continue;
-                       geom_id = geom_lookupid(&geom_tree, snap_present_iter->id);
+                       geom_id = geom_lookupid(&geom_tree, snap_iter->id);
 
                        /* New device? refresh GEOM tree */
                        if (geom_id == NULL) {
                                geom_deletetree(&geom_tree);
                                if (geom_gettree(&geom_tree) != 0) {
                                        ERROR("disk plugin: geom_gettree() failed");
-                                       geom_stats_snapshot_free(snap_present);
+                                       geom_stats_snapshot_free(snap);
                                        return (-1);
                                }
-                               geom_id = geom_lookupid(&geom_tree, snap_present_iter->id);
+                               geom_id = geom_lookupid(&geom_tree, snap_iter->id);
                        }
                        /*
                         * This should be rare: the device come right before we take the
@@ -586,23 +586,23 @@ static int disk_read (void)
                                continue;
 
                        /* Check if this is a dirty read quit for another try */
-                       if (snap_present_iter->sequence0 != snap_present_iter->sequence1) {
+                       if (snap_iter->sequence0 != snap_iter->sequence1) {
                                dirty = 1;
                                break;
                        }
                }
        }
 
-       /* Reset iterators for both snapshots */
-       geom_stats_snapshot_reset(snap_present);
+       /* Reset iterator */
+       geom_stats_snapshot_reset(snap);
        for (;;) {
-               snap_present_iter = geom_stats_snapshot_next(snap_present);
-               if (snap_present_iter == NULL)
+               snap_iter = geom_stats_snapshot_next(snap);
+               if (snap_iter == NULL)
                        break;
 
-               if (snap_present_iter->id == NULL)
+               if (snap_iter->id == NULL)
                        continue;
-               geom_id = geom_lookupid(&geom_tree, snap_present_iter->id);
+               geom_id = geom_lookupid(&geom_tree, snap_iter->id);
                if (geom_id == NULL)
                        continue;
                if (geom_id->lg_what != ISPROVIDER)
@@ -610,10 +610,10 @@ static int disk_read (void)
                if (((struct gprovider *)(geom_id->lg_ptr))->lg_geom->lg_rank != 1)
                        continue;
                /* Skip dirty reads, if present */
-               if (dirty && (snap_present_iter->sequence0 != snap_present_iter->sequence1))
+               if (dirty && (snap_iter->sequence0 != snap_iter->sequence1))
                        continue;
 
-               devstat_compute_statistics(snap_present_iter, NULL, 10.0,
+               devstat_compute_statistics(snap_iter, NULL, 10.0,
                    DSM_TOTAL_TRANSFERS_READ, &read_ops,
                    DSM_TOTAL_BYTES_READ, &read_bytes,
                    DSM_TOTAL_DURATION_READ, &read_time,
@@ -639,7 +639,7 @@ static int disk_read (void)
                                        (derive_t)(read_time*1000), (derive_t)(write_time*1000));
                }
        }
-       geom_stats_snapshot_free(snap_present);
+       geom_stats_snapshot_free(snap);
 
 #elif KERNEL_LINUX
        FILE *fh;