mm/migrate.c: check pagelist in move_pages_and_store_status()
When pagelist is empty, it is not necessary to do the move and store. Also it consolidate the empty list check in one place. Signed-off-by: Wei Yang <richardw.yang@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Michal Hocko <mhocko@suse.com> Link: http://lkml.kernel.org/r/20200214003017.25558-4-richardw.yang@linux.intel.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
7ca8783ad8
commit
5d7ae891cd
@ -1518,9 +1518,6 @@ static int do_move_pages_to_node(struct mm_struct *mm,
|
||||
{
|
||||
int err;
|
||||
|
||||
if (list_empty(pagelist))
|
||||
return 0;
|
||||
|
||||
err = migrate_pages(pagelist, alloc_new_node_page, NULL, node,
|
||||
MIGRATE_SYNC, MR_SYSCALL);
|
||||
if (err)
|
||||
@ -1608,6 +1605,9 @@ static int move_pages_and_store_status(struct mm_struct *mm, int node,
|
||||
{
|
||||
int err;
|
||||
|
||||
if (list_empty(pagelist))
|
||||
return 0;
|
||||
|
||||
err = do_move_pages_to_node(mm, pagelist, node);
|
||||
if (err) {
|
||||
/*
|
||||
@ -1705,9 +1705,6 @@ static int do_pages_move(struct mm_struct *mm, nodemask_t task_nodes,
|
||||
current_node = NUMA_NO_NODE;
|
||||
}
|
||||
out_flush:
|
||||
if (list_empty(&pagelist))
|
||||
return err;
|
||||
|
||||
/* Make sure we do not overwrite the existing error */
|
||||
err1 = move_pages_and_store_status(mm, current_node, &pagelist,
|
||||
status, start, i, nr_pages);
|
||||
|
Loading…
Reference in New Issue
Block a user