From 9cc63f8bcd560c760d0b12e15bba8f81c86237cf Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Fri, 14 Aug 2026 15:43:51 -0700 Subject: Merge branches 'expcb.2026.07.24a', 'misc.2026.07.30a', 'rcu-tasks.2026.07.30a', 'srcu.2026.08.11a' and 'torture.2026.08.14a' into HEAD Changes: Make expedited grace periods expedite normal RCU callbacks Miscellaneous fixes: * Improve diagnostic output with character task states. * Mark accesses to inform KCSAN of concurrency design. * Move from kmalloc() to kmalloc_obj(). * Documentation updates. * Improve handling of RCU deferred quiescent states. * Clean up unused function arguments and structure fields. * Reduce show_rcu_gp_kthreads() stack space. Tasks RCU updates: * Clean up after SRCU re-implementation of Tasks Trace RCU. * Mark accesses to inform KCSAN of concurrency design. * Add ->lazy_timer status to diagnostic output. * Remove an unnecessary memory barrier. * Fix a data race, courtesy of KCSAN. * Documentation updates. * Convert cond_resched_tasks_rcu_qs() from macro to static inline function. SRCU updates: * Add Rust helpers for SRCU. * Avoid losing queued work at cleanup_srcu_struct() time. Torture-test updates: * Preparation work for immediate RCU priority deboosting. * Test RCU readers from real interrupt handlers (as opposed to softirq). * Simplify code through use of cpumask_next_wrap(). * Improve diagnostic output with character task states. * Add rcutorture.nwriters parameter to allow lightweight stall testing, and rcutorture.stall_only to make doing so easier. * Test an RCU Tasks Trace grace period implying an RCU grace period. * Make RCU Tasks Trace torturing track reader batches. * Fix a data race, courtesy of KCSAN. * Plug a shuffle_tmp_mask memory leak on kthread spawn failure. --- fs/btrfs/relocation.h | 52 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 fs/btrfs/relocation.h (limited to 'fs/btrfs/relocation.h') diff --git a/fs/btrfs/relocation.h b/fs/btrfs/relocation.h new file mode 100644 index 000000000..bb7a86e7d --- /dev/null +++ b/fs/btrfs/relocation.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef BTRFS_RELOCATION_H +#define BTRFS_RELOCATION_H + +#include + +struct extent_buffer; +struct btrfs_fs_info; +struct btrfs_root; +struct btrfs_trans_handle; +struct btrfs_ordered_extent; +struct btrfs_pending_snapshot; + +static inline bool should_relocate_using_remap_tree(const struct btrfs_block_group *bg) +{ + if (!btrfs_fs_incompat(bg->fs_info, REMAP_TREE)) + return false; + + if (bg->flags & (BTRFS_BLOCK_GROUP_SYSTEM | BTRFS_BLOCK_GROUP_METADATA_REMAP)) + return false; + + return true; +} + +int btrfs_relocate_block_group(struct btrfs_fs_info *fs_info, u64 group_start, + bool verbose); +int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, struct btrfs_root *root); +int btrfs_update_reloc_root(struct btrfs_trans_handle *trans, + struct btrfs_root *root); +int btrfs_recover_relocation(struct btrfs_fs_info *fs_info); +int btrfs_reloc_clone_csums(struct btrfs_ordered_extent *ordered); +int btrfs_reloc_cow_block(struct btrfs_trans_handle *trans, + struct btrfs_root *root, + const struct extent_buffer *buf, + struct extent_buffer *cow); +void btrfs_reloc_pre_snapshot(struct btrfs_pending_snapshot *pending, + u64 *bytes_to_reserve); +int btrfs_reloc_post_snapshot(struct btrfs_trans_handle *trans, + struct btrfs_pending_snapshot *pending); +int btrfs_should_cancel_balance(const struct btrfs_fs_info *fs_info); +struct btrfs_root *find_reloc_root(struct btrfs_fs_info *fs_info, u64 bytenr); +bool btrfs_should_ignore_reloc_root(const struct btrfs_root *root); +u64 btrfs_get_reloc_bg_bytenr(struct btrfs_fs_info *fs_info); +int btrfs_translate_remap(struct btrfs_fs_info *fs_info, u64 *logical, u64 *length); +int btrfs_remove_extent_from_remap_tree(struct btrfs_trans_handle *trans, + struct btrfs_path *path, + u64 bytenr, u64 num_bytes); +int btrfs_last_identity_remap_gone(struct btrfs_chunk_map *chunk_map, + struct btrfs_block_group *bg); + +#endif -- cgit v1.3.1