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ext4: include journal blocks in df overhead calcs

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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>
This commit is contained in:
Eric Sandeen 2012-12-25 13:56:01 -05:00 committed by Theodore Ts'o
parent a28a9178e8
commit 0875a2b448
1 changed files with 4 additions and 0 deletions
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4
fs/ext4/super.c
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@ -3231,6 +3231,10 @@ int ext4_calculate_overhead(struct super_block *sb)
memset(buf, 0, PAGE_SIZE); memset(buf, 0, PAGE_SIZE);
cond_resched(); 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; sbi->s_overhead = overhead;
smp_wmb(); smp_wmb();
free_page((unsigned long) buf); free_page((unsigned long) buf);