Fix mempolicy.h build error
<linux/mempolicy.h> uses struct mm_struct and relies on a definition or declaration somehow magically being dragged in which may result in a build: CC mm/mempolicy.o In file included from mm/mempolicy.c:69: include/linux/mempolicy.h:150: warning: 'struct mm_struct' declared inside parameter list include/linux/mempolicy.h:150: warning: its scope is only this definition or declaration, which is probably not what you want include/linux/mempolicy.h:174: warning: 'struct mm_struct' declared inside parameter list mm/mempolicy.c:673: error: conflicting types for 'do_migrate_pages' include/linux/mempolicy.h:174: error: previous declaration of 'do_migrate_pages' was here mm/mempolicy.c:1696: error: conflicting types for 'mpol_rebind_mm' include/linux/mempolicy.h:150: error: previous declaration of 'mpol_rebind_mm' was here make[1]: *** [mm/mempolicy.o] Error 1 make: *** [mm] Error 2 $ Including <linux/sched.h> is a step into direction of include hell so fixed by adding a forward declaration of struct mm_struct instead. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Adrian Bunk <bunk@stusta.de>
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