The journal blocks of external journal device should not
be counted as overhead.
Signed-off-by: Chin-Tsung Cheng <chintz...@gmail.com>
---
fs/ext4/super.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 32b43ad..03b2f62 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3316,9 +3316,10 @@ 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)
- overhead += EXT4_NUM_B2C(sbi, sbi->s_journal->j_maxlen);
+ /* Add the internal journal blocks as well */
+ if ((sbi->s_journal) &&
+ (sbi->s_journal->j_fs_dev == sbi->s_journal->j_dev))
+ overhead += EXT4_NUM_B2C(sbi, sbi->s_journal->j_maxlen);
sbi->s_overhead = overhead;
smp_wmb();
--
1.9.3
--
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