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Commit c6b6ef8b authored by Lee Schermerhorn's avatar Lee Schermerhorn Committed by Linus Torvalds
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mempolicy: fix get_mempolicy() for relative and static nodes 



Discovered while testing other mempolicy changes:

get_mempolicy() does not handle static/relative mode flags correctly.
Return the value that the user specified so that it can be restored
via set_mempolicy() if desired.

Signed-off-by: default avatarLee Schermerhorn <lee.schermerhorn@hp.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: Ravikiran Thirumalai <kiran@scalex86.org>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 7198f3c9

mm/mempolicy.c

+7 −3
Original line number Diff line number Diff line
@@ -806,10 +806,14 @@ static long do_get_mempolicy(int *policy, nodemask_t *nmask, 


	err = 0;

	if (nmask) {

		if (mpol_store_user_nodemask(pol)) {

			*nmask = pol->w.user_nodemask;

		} else {

			task_lock(current);

			get_policy_nodemask(pol, nmask);

			task_unlock(current);

		}

	}



 out:

	mpol_cond_put(pol);