[PATCH 2/2] ext4: Mark the buffer_heads as dirty and uptodate after prepare_write

["Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>]

We need to make sure we mark the buffer_heads as dirty and uptodate
so that block_write_full_page write them correctly.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
 fs/ext4/inode.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 95d0d12..d986018 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2351,6 +2351,8 @@ static int ext4_da_writepage(struct page *page,
 			unlock_page(page);
 			return 0;
 		}
+		/* now mark the buffer_heads as dirty and uptodate */
+		block_commit_write(page, 0, PAGE_CACHE_SIZE);
 	}
 
 	if (test_opt(inode->i_sb, NOBH) && ext4_should_writeback_data(inode))
-- 
1.6.0.3.640.g6331a