mm: page_alloc: Make paranoid check in move_freepages a VM_BUG_ON
Since 2.6.24 there has been a paranoid check in move_freepages that looks up the zone of two pages. This is a very slow path and the only time I've seen this bug trigger recently is when memory initialisation was broken during patch development. Despite the fact it's a slow path, this patch converts the check to a VM_BUG_ON anyway as it has served its purpose by now. Signed-off-by: Mel Gorman <mgorman@suse.de> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
b246d3d11e
commit
97ee4ba7cb
|
@ -1015,7 +1015,7 @@ int move_freepages(struct zone *zone,
|
|||
* Remove at a later date when no bug reports exist related to
|
||||
* grouping pages by mobility
|
||||
*/
|
||||
BUG_ON(page_zone(start_page) != page_zone(end_page));
|
||||
VM_BUG_ON(page_zone(start_page) != page_zone(end_page));
|
||||
#endif
|
||||
|
||||
for (page = start_page; page <= end_page;) {
|
||||
|
|
Loading…
Reference in a new issue