ext4: Make ext4_ext_find_extent fills ext_path completely
When pos=0 or depth, the fields of ext4_ext_path is are not completely filled. This patch also removes some unnecessary code. Signed-off-by: Shen Feng <shen@cn.fujitsu.com> Signed-off-by: Mingming Cao <cmm@us.ibm.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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@ -524,6 +524,7 @@ ext4_ext_find_extent(struct inode *inode, ext4_lblk_t block,
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alloc = 1;
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alloc = 1;
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}
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}
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path[0].p_hdr = eh;
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path[0].p_hdr = eh;
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path[0].p_bh = NULL;
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i = depth;
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i = depth;
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/* walk through the tree */
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/* walk through the tree */
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@ -552,12 +553,14 @@ ext4_ext_find_extent(struct inode *inode, ext4_lblk_t block,
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}
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}
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path[ppos].p_depth = i;
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path[ppos].p_depth = i;
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path[ppos].p_hdr = eh;
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path[ppos].p_ext = NULL;
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path[ppos].p_ext = NULL;
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path[ppos].p_idx = NULL;
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path[ppos].p_idx = NULL;
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/* find extent */
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/* find extent */
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ext4_ext_binsearch(inode, path + ppos, block);
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ext4_ext_binsearch(inode, path + ppos, block);
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/* if not an empty leaf */
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if (path[ppos].p_ext)
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path[ppos].p_block = ext_pblock(path[ppos].p_ext);
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ext4_ext_show_path(inode, path);
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ext4_ext_show_path(inode, path);
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