mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-08-09 06:14:34 +02:00
Mykyta YatsenkoandAlexei Starovoitov
8f6802d26d
Reflect the rqspinlock conversion and orphan-recovery paths added in the previous commit: - All LRU locks are rqspinlock_t; any acquire can fail (AA or timeout). A shared "rqspinlock acquire failed" terminal collapses to the existing -ENOMEM exit. Dashed arrows from each acquire site mark the failure paths. - The per-CPU local freelist is now lockless (free_llist). - Post-steal: re-acquiring loc_l->lock to insert the stolen node into the local pending list can fail; on failure the node is published to free_llist instead of being orphaned, and the call returns -ENOMEM. - Steal-loop victim lock failure is silent: skip the victim and try the next CPU. Signed-off-by: Mykyta Yatsenko <yatsenko@meta.com> Link: https://lore.kernel.org/r/20260607-lru_map_spin-v3-2-bcd9332e911b@meta.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>