diff options
Diffstat (limited to 'fs/ext4/resize.c')
| -rw-r--r-- | fs/ext4/resize.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index b63cb88ccdae..ee8f02f406cb 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -717,12 +717,23 @@ out: * sequence of powers of 3, 5, and 7: 1, 3, 5, 7, 9, 25, 27, 49, 81, ... * For a non-sparse filesystem it will be every group: 1, 2, 3, 4, ... */ -static unsigned ext4_list_backups(struct super_block *sb, unsigned *three, - unsigned *five, unsigned *seven) +unsigned int ext4_list_backups(struct super_block *sb, unsigned int *three, + unsigned int *five, unsigned int *seven) { - unsigned *min = three; + struct ext4_super_block *es = EXT4_SB(sb)->s_es; + unsigned int *min = three; int mult = 3; - unsigned ret; + unsigned int ret; + + if (ext4_has_feature_sparse_super2(sb)) { + do { + if (*min > 2) + return UINT_MAX; + ret = le32_to_cpu(es->s_backup_bgs[*min - 1]); + *min += 1; + } while (!ret); + return ret; + } if (!ext4_has_feature_sparse_super(sb)) { ret = *min; |