static off_t arg_file_size_max = READAHEAD_FILE_SIZE_MAX;
static usec_t arg_timeout = 2*USEC_PER_MINUTE;
+/* Avoid collisions with the NULL pointer */
+#define SECTOR_TO_PTR(s) ULONG_TO_PTR((s)+1)
+#define PTR_TO_SECTOR(p) (PTR_TO_ULONG(p)-1)
+
static int btrfs_defrag(int fd) {
struct btrfs_ioctl_vol_args data;
ul = fd_first_block(m->fd);
- if ((k = hashmap_put(files, p, ULONG_TO_PTR(ul))) < 0) {
+ if ((k = hashmap_put(files, p, SECTOR_TO_PTR(ul))) < 0) {
log_warning("set_put() failed: %s", strerror(-k));
free(p);
}
j = ordered;
HASHMAP_FOREACH_KEY(q, p, files, i) {
j->path = p;
- j->block = PTR_TO_ULONG(q);
+ j->block = PTR_TO_SECTOR(q);
j++;
}