[PATCH 08/13] ext4: calculate free_clusters_count in cluster unit in verify_group_input

[Kemeng Shi]

We treat free_clusters_count in cluster unit while free_blocks_count is
in block unit. Convert free_blocks_count to cluster unit to match the
unit.
Currently, verify_group_input is only called from ext4_ioctl_group_add
which does not support bigalloc yet. The dismatch is easily ingored
when we try to support bigalloc in ext4_ioctl_group_add (ext4_resize_fs
already supports resize with bigalloc enabled). Just fix this in
advance.

Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
---
 fs/ext4/resize.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 07828903b818..c532bb613043 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -154,8 +154,9 @@ static int verify_group_input(struct super_block *sb,
 
 	overhead = ext4_group_overhead_blocks(sb, group);
 	metaend = start + overhead;
-	input->free_clusters_count = free_blocks_count =
-		input->blocks_count - 2 - overhead - sbi->s_itb_per_group;
+	free_blocks_count = input->blocks_count - 2 - overhead -
+			    sbi->s_itb_per_group;
+	input->free_clusters_count = EXT4_B2C(sbi, free_blocks_count);
 
 	if (test_opt(sb, DEBUG))
 		printk(KERN_DEBUG "EXT4-fs: adding %s group %u: %u blocks "
-- 
2.30.0