> On Wed, Feb 29, 2012 at 04:04:22PM +0100, Marek Szyprowski wrote: > > +static int arm_iommu_mmap_attrs(struct device *dev, struct > vm_area_struct *vma, > > + void *cpu_addr, dma_addr_t dma_addr, size_t size, > > + struct dma_attrs *attrs) > > +{ > > + struct arm_vmregion *c; > > + > > + vma->vm_page_prot = __get_dma_pgprot(attrs, vma- > >vm_page_prot); > > + c = arm_vmregion_find(&consistent_head, (unsigned > long)cpu_addr); > > What protects this against other insertions/removals from the list? arm_vmregion_find uses a spin_lock internally before accessing consistent_head. So, it is protected. -KR --nvpublic -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html