Updating of backup group descriptor blocks shoud done in the unit of
gdb, rather than group.
Signed-off-by: Yongqiang Yang <xiaoqiangnk@xxxxxxxxx>
---
fs/ext4/resize.c | 11 +++++++----
1 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 58109fa..3999a19 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -1290,15 +1290,18 @@ exit_journal:
err = err2;
if (!err) {
- int i;
+ int gdb_num, gdb_num_end;
ext4_fsblk_t first_block;
+
first_block = ext4_group_first_block_no(sb, 0);
update_backups(sb, sbi->s_sbh->b_blocknr - first_block,
(char *)es, sizeof(struct ext4_super_block));
- for (i = 0; i < flex_gd->count; i++, group++) {
+
+ gdb_num = group / EXT4_DESC_PER_BLOCK(sb);
+ gdb_num_end = (group + flex_gd->count - 1) /
+ EXT4_DESC_PER_BLOCK(sb);
+ for (; gdb_num <= gdb_num_end; gdb_num++) {
struct buffer_head *gdb_bh;
- int gdb_num;
- gdb_num = group / EXT4_BLOCKS_PER_GROUP(sb);
gdb_bh = sbi->s_group_desc[gdb_num];
update_backups(sb, gdb_bh->b_blocknr - first_block,
gdb_bh->b_data, gdb_bh->b_size);
--
1.7.5.1
--
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