linux-ext4 - [PATCH -V2] ext4: Mark the buffer_heads as dirty and uptodate after prepare

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Date:	Fri,  7 Nov 2008 18:42:43 +0530
From:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
To:	cmm@...ibm.com, tytso@....edu, sandeen@...hat.com,
	vallesroc@...il.com, Solofo.Ramangalahy@...l.net,
	cryptooctoploid@...il.com
Cc:	linux-ext4@...r.kernel.org,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: [PATCH -V2] ext4: Mark the buffer_heads as dirty and uptodate after prepare_write

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@...ux.vnet.ibm.com>
---
 fs/ext4/inode.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 95d0d12..f9461d7 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2333,6 +2333,15 @@ static int ext4_da_writepage(struct page *page,
 		ret = block_prepare_write(page, 0, PAGE_CACHE_SIZE,
 						ext4_normal_get_block_write);
 		if (!ret) {
+			/*
+			 * We mark the buffer_head dirty and uptodate even
+			 * if we are not doing a block_write_full_page. This
+			 * make sure when writeback see the page again with
+			 * buffer_head present the buffer_head would have
+			 * the right flags
+			 */
+			block_commit_write(page, 0, PAGE_CACHE_SIZE);
+
 			page_bufs = page_buffers(page);
 			/* check whether all are mapped and non delay */
 			if (walk_page_buffers(NULL, page_bufs, 0, len, NULL,
-- 
1.6.0.3.640.g6331a

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