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Al Viro authored
After the previous commit we have * xarray and bvec callbacks idential in all cases * both equivalent to kvec callback wrapped into kmap_local_page()/kunmap_local() pair. So we can pass only two (iovec and kvec) callbacks to iterate_and_advance() and let iterate_{bvec,xarray} wrap it into kmap_local_page()/kunmap_local_page(). Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk>
21b56c84