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'send_section_map' is a bitmap. So use 'bitmap_zalloc()' to simplify code, improve the semantic and avoid some open-coded arithmetic in allocator arguments. Also change the corresponding 'kfree()' into 'bitmap_free()' to keep consistency. While at it, change an '== NULL' test into a '!'. Signed-off-by: Christophe JAILLET <[email protected]> Signed-off-by: David S. Miller <[email protected]>