mm/page-writeback.c: remove unused parameter from balance_dirty_pages()
"mapping" parameter to balance_dirty_pages() is not used anymore. Fixes: dfb8ae56 ("writeback: let balance_dirty_pages() work on the matching cgroup bdi_writeback") Link: http://lkml.kernel.org/r/20170927221311.23263-1-tahsin@google.comSigned-off-by: NTahsin Erdogan <tahsin@google.com> Acked-by: NMichal Hocko <mhocko@suse.com> Acked-by: NJohannes Weiner <hannes@cmpxchg.org> Cc: Jan Kara <jack@suse.cz> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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