ext4: fix mmap data corruption in nodelalloc mode when blocksize < pagesize
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>
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