mm: add filemap_fdatawait_range_keep_errors()
commit aa0bfcd939c30617385ffa28682c062d78050eba upstream. In the spirit of filemap_fdatawait_range() and filemap_fdatawait_keep_errors(), introduce filemap_fdatawait_range_keep_errors() which both takes a range upon which to wait and does not clear errors from the address space. Signed-off-by: NRoss Zwisler <zwisler@google.com> Signed-off-by: NTheodore Ts'o <tytso@mit.edu> Reviewed-by: NJan Kara <jack@suse.cz> Cc: stable@vger.kernel.org Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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