On Wed, Jul 05, 2017 at 08:53:19PM +0800, Liang Chen wrote: > The use of the union reduces the size of closure struct by taking advantage > of the current size of its members. The offset of func in work_struct equals > the size of the first three members, so that work.work_func will just > reference the forth member - the pointer to closure_fn. > > This is smart but dangerous. It can be broken if work_struct or the other > ones get changed, and can be a bit difficult to debug. Please, don't ever cast function pointers, as that's extremely dangerous. -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
