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The new_node_page() is processed as the following procedure.
1. A new node page is allocated.
2. Set PageUptodate with proper footer information.
3. Check if there is a free space for allocation
4.a. If there is no space, f2fs returns with -ENOSPC.
4.b. Otherwise, go next.
In the case of step #4.a, f2fs remains a wrong node page in the page cache
with the uptodate flag.
Also, even though a new node page is allocated successfully, an error can be
occurred afterwards due to allocation failure of the other data structures.
In such a case, remove_inode_page() would be triggered, so that we have to
clear uptodate flag in truncate_node() too.
So, we should remove the uptodate flag, if allocation is failed.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
71e9fec548