[0/8] mm/migrate.c: cleanup on do_pages_move()

Message

Wei Yang Jan. 19, 2020, 3:06 a.m. UTC

The logic in do_pages_move() is a little mess for audience to read and has
some potential error on handling the return value. Especially there are
three calls on do_move_pages_to_node() and store_status() with almost the
same form.

This patch set tries to make the code a little friendly for audience by
consolidate the calls and remove some unnecessary repeat code.

After this, we can do a better fix.

Wei Yang (8):
  mm/migrate.c: skip node check if done in last round
  mm/migrate.c: not necessary to check start and i
  mm/migrate.c: reform the last call on do_move_pages_to_node()
  mm/migrate.c: wrap do_move_pages_to_node() and store_status()
  mm/migrate.c: check pagelist in move_pages_and_store_status()
  mm/migrate.c: handle same node and add failure in the same way
  mm/migrate.c: move page on next iteration
  mm/migrate.c: use break instead of goto out_flush

 mm/migrate.c | 90 ++++++++++++++++++++++++++++------------------------
 1 file changed, 48 insertions(+), 42 deletions(-)