From patchwork Wed Nov 28 20:51:21 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: ext4: include journal blocks in df overhead calcs From: Eric Sandeen X-Patchwork-Id: 202546 Message-Id: <50B67949.60104@redhat.com> To: ext4 development Date: Wed, 28 Nov 2012 14:51:21 -0600 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 Tested-by: Eric Whitney --- I don't think this needs any special treatment for big allocclusters, does it? df still reports blocks? -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 80928f7..b441daa 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3229,6 +3229,10 @@ 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 += sbi->s_journal->j_maxlen; + sbi->s_overhead = overhead; smp_wmb(); free_page((unsigned long) buf);