The patch titled
Subject: mm/migrate.c: no need to check for i > start in do_pages_move()
has been added to the -mm tree. Its filename is
mm-migratec-no-need-to-check-for-i-start-in-do_pages_move.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-migratec-no-need-to-check-for-i-start-in-do_pages_move.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-migratec-no-need-to-check-for-i-start-in-do_pages_move.patch
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------------------------------------------------------
From: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx>
Subject: mm/migrate.c: no need to check for i > start in do_pages_move()
Patch series "cleanup on do_pages_move()", v5.
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.
This patch (of 4):
At this point, we always have i >= start. If i == start, store_status()
will return 0. So we can drop the check for i > start.
[david@xxxxxxxxxx rephrase changelog]
Link: http://lkml.kernel.org/r/20200214003017.25558-2-richardw.yang@xxxxxxxxxxxxxxx
Signed-off-by: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/migrate.c | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
--- a/mm/migrate.c~mm-migratec-no-need-to-check-for-i-start-in-do_pages_move
+++ a/mm/migrate.c
@@ -1675,11 +1675,9 @@ static int do_pages_move(struct mm_struc
err += nr_pages - i - 1;
goto out;
}
- if (i > start) {
- err = store_status(status, start, current_node, i - start);
- if (err)
- goto out;
- }
+ err = store_status(status, start, current_node, i - start);
+ if (err)
+ goto out;
current_node = NUMA_NO_NODE;
}
out_flush:
_
Patches currently in -mm which might be from richardw.yang@xxxxxxxxxxxxxxx are
mm-sparsemem-get-address-to-page-struct-instead-of-address-to-pfn.patch
mm-migratec-no-need-to-check-for-i-start-in-do_pages_move.patch
mm-migratec-wrap-do_move_pages_to_node-and-store_status.patch
mm-migratec-check-pagelist-in-move_pages_and_store_status.patch
mm-migratec-unify-not-queued-for-migration-handling-in-do_pages_move.patch
