mm/mremap: it is sure to have enough space when extent meets requirement

[mirror_ubuntu-jammy-kernel.git] / mm / huge_memory.c

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 78c84bee7e294f3bb48e43b1015fd82c077c5698..1e580fdad4d039a3e97a3cbffd7d84da15cff219 100644 (file)
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1722,17 +1722,14 @@ static pmd_t move_soft_dirty_pmd(pmd_t pmd)
 }
 
 bool move_huge_pmd(struct vm_area_struct *vma, unsigned long old_addr,
-                 unsigned long new_addr, unsigned long old_end,
-                 pmd_t *old_pmd, pmd_t *new_pmd)
+                 unsigned long new_addr, pmd_t *old_pmd, pmd_t *new_pmd)
 {
        spinlock_t *old_ptl, *new_ptl;
        pmd_t pmd;
        struct mm_struct *mm = vma->vm_mm;
        bool force_flush = false;
 
-       if ((old_addr & ~HPAGE_PMD_MASK) ||
-           (new_addr & ~HPAGE_PMD_MASK) ||
-           old_end - old_addr < HPAGE_PMD_SIZE)
+       if ((old_addr & ~HPAGE_PMD_MASK) || (new_addr & ~HPAGE_PMD_MASK))
                return false;
 
        /*