ext4: include journal blocks in df overhead calcs
To more accurately calculate overhead for "bsd" style
df reporting, we should count the journal blocks as
overhead as well.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Tested-by: Eric Whitney <enwlinux@gmail.com>
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index e09f7d1..4969167 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3231,6 +3231,10 @@
memset(buf, 0, PAGE_SIZE);
cond_resched();
}
+ /* Add the journal blocks as well */
+ if (sbi->s_journal)
+ overhead += EXT4_B2C(sbi, sbi->s_journal->j_maxlen);
+
sbi->s_overhead = overhead;
smp_wmb();
free_page((unsigned long) buf);