From: Jaegeuk Kim Date: Fri, 7 Jun 2013 13:08:23 +0000 (+0900) Subject: f2fs: sync dir->i_size with its block allocation X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~81^2~15 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=699489bbbea4fc3b9b735d69941cf4fca91ce1d5;p=pandora-kernel.git f2fs: sync dir->i_size with its block allocation If new dentry block is allocated and its i_size is updated, we should update its inode block together in order to sync i_size and its block allocation. Otherwise, we can loose additional dentry block due to the unconsistent i_size. Errorneous Scenario ------------------- In the recovery routine, - recovery_dentry | - __f2fs_add_link | | - get_new_data_page | | | - i_size_write(new_i_size) | | | - mark_inode_dirty_sync(dir) | | - update_parent_metadata | | | - mark_inode_dirty(dir) | - write_checkpoint - sync_dirty_dir_inodes - filemap_flush(dentry_blocks) - f2fs_write_data_page - skip to write the last dentry block due to index < i_size In the above flow, new_i_size is not updated to its inode block so that the last dentry block will be lost accordingly. Signed-off-by: Jaegeuk Kim --- Reading git-diff-tree failed