Btrfs: remove repeated eb->pages check in, disk-io.c/csum_dirty_buffer

Wang Sheng-Hui · Chris Mason · commit 1037a5affc26 · 2012-10-09T09:37:30.000-04:00
In csum_dirty_buffer, we first get eb from page-&gt;private.
Then we check if the page is the first page of eb. Later
we check it again. Remove the repeated check here.

Signed-off-by: Wang Sheng-Hui &lt;shhuiw@gmail.com&gt;
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
@@ -433,10 +433,6 @@ static int csum_dirty_buffer(struct btrfs_root *root, struct page *page)
 		WARN_ON(1);
 		return 0;
 	}
-	if (eb->pages[0] != page) {
-		WARN_ON(1);
-		return 0;
-	}
 	if (!PageUptodate(page)) {
 		WARN_ON(1);
 		return 0;
