patch "nds32: fix up stack guard gap" added to char-misc-linus

This is a note to let you know that I've just added the patch titled

nds32: fix up stack guard gap

to my char-misc git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
in the char-misc-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From c453db6cd96418c79702eaf38259002755ab23ff Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <[email protected]>
Date: Tue, 29 Jun 2021 12:40:24 +0200
Subject: nds32: fix up stack guard gap

Commit 1be7107fbe18 ("mm: larger stack guard gap, between vmas") fixed up all architectures to deal with the stack guard gap. But when nds32 was added to the tree, it forgot to do the same thing.

Resolve this by properly fixing up the nsd32's version of arch_get_unmapped_area()

---
 arch/nds32/mm/mmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index c206b31ce07a..1bdf5e7d1b43 100644
@@ -59,7 +59,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    (!vma || addr + len <= vm_start_gap(vma)))
 			return addr;
 	}
 

2.32.0