From: Christoph Lameter <clameter@engr.sgi.com>
Date: Wed, 1 Mar 2006 00:58:57 +0000 (-0800)
Subject: [PATCH] Fix sys_migrate_pages: Move all pages when invoked from root
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=511030bcd24119fa3759ef3f914d354e107ef839;p=linux-beck.git

[PATCH] Fix sys_migrate_pages: Move all pages when invoked from root

Currently sys_migrate_pages only moves pages belonging to a process.  This
is okay when invoked from a regular user.  But if invoked from root it
should move all pages as documented in the migrate_pages manpage.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 67af4cea1e23..5643cfed6b0f 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -954,7 +954,8 @@ asmlinkage long sys_migrate_pages(pid_t pid, unsigned long maxnode,
 		goto out;
 	}
 
-	err = do_migrate_pages(mm, &old, &new, MPOL_MF_MOVE);
+	err = do_migrate_pages(mm, &old, &new,
+		capable(CAP_SYS_ADMIN) ? MPOL_MF_MOVE_ALL : MPOL_MF_MOVE);
 out:
 	mmput(mm);
 	return err;