Re: [PATCH V2] mm: vmalloc: don't remove inexistent guard hole in remove_vm_area()

From: David Rientjes
Date: Thu Nov 12 2015 - 15:56:04 EST

On Thu, 12 Nov 2015, Jerome Marchand wrote:

> Commit 71394fe50146 ("mm: vmalloc: add flag preventing guard hole
> allocation") missed a spot. Currently remove_vm_area() decreases
> vm->size to "remove" the guard hole page, even when it isn't present.
> All but one users just free the vm_struct rigth away and never access
> vm->size anyway.
> Don't touch the size in remove_vm_area() and have __vunmap() use the
> proper get_vm_area_size() helper.
> Signed-off-by: Jerome Marchand <jmarchan@xxxxxxxxxx>

Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at