arch/xtensa: Use maple tree iterators for unmapped area

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>

diff --git a/arch/xtensa/kernel/syscall.c b/arch/xtensa/kernel/syscall.c
index 201356faa7e6e01d19bedf684194f44f076b6409..118fe0ca759411b888dad26799bcd549aef1b2b1 100644 (file)
--- a/arch/xtensa/kernel/syscall.c
+++ b/arch/xtensa/kernel/syscall.c
@@ -58,6 +58,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
                unsigned long len, unsigned long pgoff, unsigned long flags)
 {
        struct vm_area_struct *vmm;
+       MA_STATE(mas, &mm->mm_mt, addr, addr);
 
        if (flags & MAP_FIXED) {
                /* We do not accept a shared mapping if it would violate
@@ -79,7 +80,8 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
        else
                addr = PAGE_ALIGN(addr);
 
-       for (vmm = find_vma(current->mm, addr); ; vmm = vmm->vm_next) {
+       /* Must hold mm_mt lock */
+       mas_for_each(&mas, vmm, ULONG_MAX) {
                /* At this point:  (!vmm || addr < vmm->vm_end). */
                if (TASK_SIZE - len < addr)
                        return -ENOMEM;