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

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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);
}