提交 511030bc 编写于 作者: C Christoph Lameter 提交者: Linus Torvalds

[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: NChristoph Lameter <clameter@sgi.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 5cf6c541
......@@ -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;
......
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