Since commit 90a80202 and d6320cbf, Jan Kara has fixed this issue partially.
This mmap data corruption still exists in nodelalloc mode, fix this.
Signed-off-by: NXiaoguang Wang <wangxg.fnst@cn.fujitsu.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
Reviewed-by: NJan Kara <jack@suse.cz>