diff options
| -rw-r--r-- | super1.c | 12 |
1 files changed, 9 insertions, 3 deletions
@@ -2582,8 +2582,9 @@ add_internal_bitmap1(struct supertype *st, static int locate_bitmap1(struct supertype *st, int fd, int node_num) { - unsigned long long offset; + unsigned long long offset, bm_sectors_per_node; struct mdp_superblock_1 *sb; + bitmap_super_t *bms; int mustfree = 0; int ret; @@ -2598,8 +2599,13 @@ static int locate_bitmap1(struct supertype *st, int fd, int node_num) ret = 0; else ret = -1; - offset = __le64_to_cpu(sb->super_offset); - offset += (int32_t) __le32_to_cpu(sb->bitmap_offset) * (node_num + 1); + + offset = __le64_to_cpu(sb->super_offset) + __le32_to_cpu(sb->bitmap_offset); + if (node_num) { + bms = (bitmap_super_t*)(((char*)sb)+MAX_SB_SIZE); + bm_sectors_per_node = calc_bitmap_size(bms, 4096) >> 9; + offset += bm_sectors_per_node * node_num; + } if (mustfree) free(sb); lseek64(fd, offset<<9, 0); |