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-rw-r--r--fs/ext4/resize.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index f9d948f0eb8..3fed79da0d2 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -1582,7 +1582,7 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count)
ext4_fsblk_t o_blocks_count;
ext4_group_t o_group;
ext4_group_t n_group;
- ext4_grpblk_t offset;
+ ext4_grpblk_t offset, add;
unsigned long n_desc_blocks;
unsigned long o_desc_blocks;
unsigned long desc_blocks;
@@ -1605,7 +1605,7 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count)
return 0;
ext4_get_group_no_and_offset(sb, n_blocks_count - 1, &n_group, &offset);
- ext4_get_group_no_and_offset(sb, o_blocks_count, &o_group, &offset);
+ ext4_get_group_no_and_offset(sb, o_blocks_count - 1, &o_group, &offset);
n_desc_blocks = (n_group + EXT4_DESC_PER_BLOCK(sb)) /
EXT4_DESC_PER_BLOCK(sb);
@@ -1634,10 +1634,12 @@ int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count)
}
brelse(bh);
- if (offset != 0) {
- /* extend the last group */
- ext4_grpblk_t add;
- add = EXT4_BLOCKS_PER_GROUP(sb) - offset;
+ /* extend the last group */
+ if (n_group == o_group)
+ add = n_blocks_count - o_blocks_count;
+ else
+ add = EXT4_BLOCKS_PER_GROUP(sb) - (offset + 1);
+ if (add > 0) {
err = ext4_group_extend_no_check(sb, o_blocks_count, add);
if (err)
goto out;