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mm, mempolicy: fix mbind() to do synchronous migration 

If the range passed to mbind() is not allocated on nodes set in the
nodemask, it migrates the pages to respect the constraint.

The final formal of migrate_pages() is a mode of type enum migrate_mode,
not a boolean.  do_mbind() is currently passing "true" which is the
equivalent of MIGRATE_SYNC_LIGHT.  This should instead be MIGRATE_SYNC
for synchronous page migration.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Rientjes 2012-06-20 18:00:12 -07:00 committed by Linus Torvalds
parent 0e3534c041
commit c4c0e9e544
1 changed files with 1 additions and 1 deletions
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2
mm/mempolicy.c
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@ -1177,7 +1177,7 @@ static long do_mbind(unsigned long start, unsigned long len,
if (!list_empty(&pagelist)) {
nr_failed = migrate_pages(&pagelist, new_vma_page,
(unsigned long)vma,
false, true);
false, MIGRATE_SYNC);
if (nr_failed)
putback_lru_pages(&pagelist);
}