Messages in this thread | | | Date | Thu, 6 Nov 2008 12:32:24 -0500 | From | Christoph Hellwig <> | Subject | Re: sparc/staging compile error |
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On Thu, Nov 06, 2008 at 09:06:36AM -0500, J.R. Mauro wrote: > static int poch_ioctl(struct inode *inode, struct file *filp, > unsigned int cmd, unsigned long arg) > { > /* ---snip---*/ > case POCH_IOC_SYNC_GROUP_FOR_USER: > case POCH_IOC_SYNC_GROUP_FOR_DEVICE: > vms = find_vma(current->mm, arg); > if (!vms) > /* Address not mapped. */ > return -EINVAL; > if (vms->vm_file != filp) > /* Address mapped from different device/file. */ > return -EINVAL; > > flush_cache_range(vms, arg, arg + channel->group_size);
This doesn't look like something a driver should ever do. Could someone explain what it's trying to do from a high level point of view?
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