On Thu, Dec 10, 2015 at 07:16:11PM +0100, Willy Tarreau wrote: > > Is f_flags safe to write like this without holding a lock? > > Unfortunately I have no idea. I've seen places where it's written without > taking a lock such as in blkdev_open() and I don't think that this one is > called with a lock held. In any ->open() we obviously have nobody else able to find that struct file, let alone modify it, so there the damn thing is essentially caller-private and no locking is needed. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>