ext4: fix overhead calculation used by ext4_statfs()
commit 952fc18ef9ec707ebdc16c0786ec360295e5ff15 upstream.
Commit f975d6bcc7a introduced bug which caused ext4_statfs() to
miscalculate the number of file system overhead blocks. This causes
the f_blocks field in the statfs structure to be larger than it should
be. This would in turn cause the "df" output to show the number of
data blocks in the file system and the number of data blocks used to
be larger than they should be.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 53589ff..3407a62 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -1141,7 +1141,7 @@
struct ext4_new_group_data *group_data = flex_gd->groups;
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_super_block *es = sbi->s_es;
- int i;
+ int i, ret;
BUG_ON(flex_gd->count == 0 || group_data == NULL);
/*
@@ -1216,6 +1216,11 @@
&sbi->s_flex_groups[flex_group].free_inodes);
}
+ /*
+ * Update the fs overhead information
+ */
+ ext4_calculate_overhead(sb);
+
if (test_opt(sb, DEBUG))
printk(KERN_DEBUG "EXT4-fs: added group %u:"
"%llu blocks(%llu free %llu reserved)\n", flex_gd->count,