mm/mprotect.c: fix compilation warning because of unused 'mm' variable
Since 0cbe3e26 ("mm: update ptep_modify_prot_start/commit to take vm_area_struct as arg") the only place that uses the local 'mm' variable in change_pte_range() is the call to set_pte_at(). Many architectures define set_pte_at() as macro that does not use the 'mm' parameter, which generates the following compilation warning: CC mm/mprotect.o mm/mprotect.c: In function 'change_pte_range': mm/mprotect.c:42:20: warning: unused variable 'mm' [-Wunused-variable] struct mm_struct *mm = vma->vm_mm; ^~ Fix it by passing vma->mm to set_pte_at() and dropping the local 'mm' variable in change_pte_range(). [liu.song.a23@gmail.com: fix missed conversions] Link: http://lkml.kernel.org/r/CAPhsuW6wcQgYLHNdBdw6m0YiR4RWsS4XzfpSKU7wBLLeOCTbpw@mail.gmail.comLink: http://lkml.kernel.org/r/1557305432-4940-1-git-send-email-rppt@linux.ibm.com Signed-off-by:Mike Rapoport <rppt@linux.ibm.com> Reviewed-by: Andrew Morton <ak...
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