Fix of the documentation of /proc/sys/vm/page-cluster to match the
behavior of the code and add some comments about what the tunable will
change in that behavior.
Signed-off-by: NChristian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Acked-by: NJens Axboe <axboe@kernel.dk>
Reviewed-by: NMinchan Kim <minchan@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>