linux-kernel - [PATCH 1/2] f2fs: flush dirty data for bmap

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Message-Id: <1445280521-25973-1-git-send-email-jaegeuk@kernel.org>
Date:	Mon, 19 Oct 2015 11:48:40 -0700
From:	Jaegeuk Kim <jaegeuk@...nel.org>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net
Cc:	Jaegeuk Kim <jaegeuk@...nel.org>
Subject: [PATCH 1/2] f2fs: flush dirty data for bmap

Users expect bmap will give allocated block addresses.
Let's play likewise ext4.

Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---
 fs/f2fs/data.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 77dfc9e..b052e7c 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1667,12 +1667,13 @@ static sector_t f2fs_bmap(struct address_space *mapping, sector_t block)
 {
 	struct inode *inode = mapping->host;
 
-	/* we don't need to use inline_data strictly */
-	if (f2fs_has_inline_data(inode)) {
-		int err = f2fs_convert_inline_inode(inode);
-		if (err)
-			return err;
-	}
+	if (f2fs_has_inline_data(inode))
+		return 0;
+
+	/* make sure allocating whole blocks */
+	if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY))
+		filemap_write_and_wait(mapping);
+
 	return generic_block_bmap(mapping, block, get_data_block_bmap);
 }
 
-- 
2.1.1

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