thp: remove unnecessary tlb flush for mprotect

change_protection() will do TLB flush later, don't need duplicate tlb flush. Signed-off-by: Shaohua Li <[email protected]> Reviewed-by: Andrea Arcangeli <[email protected]> Cc: David Rientjes <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Minchan Kim <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
mgowda · Jan 13, 2012 · e559130 · e559130
1 parent 569e559
commit e559130
Showing 1 changed file with 0 additions and 1 deletion.
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
@@ -1145,7 +1145,6 @@ int change_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
 			entry = pmd_modify(entry, newprot);
 			set_pmd_at(mm, addr, pmd, entry);
 			spin_unlock(&vma->vm_mm->page_table_lock);
-			flush_tlb_range(vma, addr, addr + HPAGE_PMD_SIZE);
 			ret = 1;
 		}
 	} else