提交 b003b524 编写于 作者: E Eric Sandeen 提交者: Theodore Ts'o

ext4: don't count external journal blocks as overhead

This was fixed for ext3 with:

e6d8fb34 ext3: Count internal journal as bsddf overhead in ext3_statfs

but was never fixed for ext4.

With a large external journal and no used disk blocks, df comes
out negative without this, as journal blocks are added to the
overhead & subtracted from used blocks unconditionally.
Signed-off-by: NEric Sandeen <sandeen@redhat.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
上级 733ded2a
......@@ -3331,8 +3331,8 @@ int ext4_calculate_overhead(struct super_block *sb)
memset(buf, 0, PAGE_SIZE);
cond_resched();
}
/* Add the journal blocks as well */
if (sbi->s_journal)
/* Add the internal journal blocks as well */
if (sbi->s_journal && !sbi->journal_bdev)
overhead += EXT4_NUM_B2C(sbi, sbi->s_journal->j_maxlen);
sbi->s_overhead = overhead;
......
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