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由 Yongqiang Yang 提交于
This patch adds a function named ext4_update_super() which updates super block so the newly created block groups are visible to the file system. This code is copied from ext4_group_add(). The function will be used by new resize implementation. Signed-off-by: NYongqiang Yang <xiaoqiangnk@gmail.com> Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
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