linux-ext4 - [PATCH v2 15/28] debugfs: handle inline

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Message-Id: <1386072715-9869-16-git-send-email-wenqing.lz@taobao.com>
Date:	Tue,  3 Dec 2013 20:11:42 +0800
From:	Zheng Liu <gnehzuil.liu@...il.com>
To:	linux-ext4@...r.kernel.org
Cc:	Theodore Ts'o <tytso@....edu>,
	"Darrick J. Wong" <darrick.wong@...cle.com>,
	Zheng Liu <wenqing.lz@...bao.com>
Subject: [PATCH v2 15/28] debugfs: handle inline_data feature in bmap command

From: Zheng Liu <wenqing.lz@...bao.com>

No physical block mapping if an inode has inline data.

Signed-off-by: Theodore Ts'o <tytso@....edu>
Signed-off-by: Zheng Liu <wenqing.lz@...bao.com>
---
 lib/ext2fs/bmap.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/ext2fs/bmap.c b/lib/ext2fs/bmap.c
index 5074587..0d043bd 100644
--- a/lib/ext2fs/bmap.c
+++ b/lib/ext2fs/bmap.c
@@ -273,6 +273,13 @@ errcode_t ext2fs_bmap2(ext2_filsys fs, ext2_ino_t ino, struct ext2_inode *inode,
 		block_buf = buf;
 	}
 
+	/*
+	 * If an inode has inline data, that means that it doesn't have
+	 * any blocks and we shouldn't map any blocks for it.
+	 */
+	if (inode->i_flags & EXT4_INLINE_DATA_FL)
+		goto done;
+
 	if (inode->i_flags & EXT4_EXTENTS_FL) {
 		retval = ext2fs_extent_open2(fs, ino, inode, &handle);
 		if (retval)
-- 
1.7.9.7

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