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 f243oIDM iuQ8zEfFSmpG8xMUd6jHRLxD02OCAlRfoo1yQDNSff5WWl1VYt3cC8uzTW1FOcP1rrdNotP9UVFvx3HmArIQgF8j8wEz4BtXb0RDXNXk26IpduNyTGHEF+Ib90ezTbRAxYukNYb44kJMF+j4QPVEvB0ZkOkAEyj8sKyBT09JaXBWUU8C3Ry28G3Yxhji7KIubEcaZdQQgDTdjlRYHKIt5wtTWe3uCbrk7A0+67WlPb8VnpAeZP7hr7AIHbFuyxrKbZR2RHY0DNCKhQytJnFj6v01/tfXNVAAKwbingUOTh6UgcDS7uOgDdd7Gdb4mtfSGzEamcNxxAmUeWTIjOUeT+WVU434BBEwZcr+7+b6+VRgm0tjOGed5HhO3lSBBrqyoW5TAfk2KfuqHQWMKI4wvScH/2AqFPJ+rzwRr1kCBHCl4DhX1ZBRI3ZBLsVpcwBUnJq/Y6Va4rdIfyAqI4G9Ju9DWsHVTrotqIM1n3yR9QXzd614= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 1/16/2026 10:46 AM, Alice Ryhl wrote: > +impl Drop for RcuBox { > + fn drop(&mut self) { > + // SAFETY: The `rcu_head` field is in-bounds of a valid allocation. > + let rcu_head = unsafe { &raw mut (*self.0.as_ptr()).rcu_head }; > + if core::mem::needs_drop::() { > + // SAFETY: `rcu_head` is the `rcu_head` field of `RcuBoxInner`. All users will be > + // gone in an rcu grace period. This is the destructor, so we may pass ownership of the > + // allocation. > + unsafe { bindings::call_rcu(rcu_head, Some(drop_rcu_box::)) }; > + } else { > + // SAFETY: All users will be gone in an rcu grace period. > + unsafe { bindings::kvfree_call_rcu(rcu_head, self.0.as_ptr().cast()) }; > + } > + } We should probably add support for asynchronous callbacks for Rust instead of directly calling the bindings in Rcubox. I know Boqun and me talked about that a while back, and there was a usecase missing. Perhaps, RcuBox is a good use case for the same? - Joel