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| author | Alexei Starovoitov <ast@kernel.org> | 2026-09-30 09:59:20 +0000 |
|---|---|---|
| committer | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2026-10-01 18:40:05 +0200 |
| commit | aeb709c767aeca996e6011133e4f7bdb2a4af652 (patch) | |
| tree | c1c2bdbb4b6b7174a5bbe9e4c2c1f1c0204adcb5 /fs/nfs/cache_lib.h | |
| download | linux-stable-aeb709c767aeca996e6011133e4f7bdb2a4af652.tar.gz linux-stable-aeb709c767aeca996e6011133e4f7bdb2a4af652.zip | |
selftests/bpf: Add a test for objects stuck in free_by_rcu_ttracegrafted
Delete all elements of BPF_F_NO_PREALLOC hash map in one batch. The first
free_bulk() starts RCU tasks trace GP and the rest of the elements are
freed while it's in flight. Wait for call_rcu_ttrace_in_progress to clear
in bpf_mem_cache of every cpu and check that free_by_rcu_ttrace and
waiting_for_gp_ttrace lists are empty.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20260930095920.601738-4-alexei.starovoitov@gmail.com
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Diffstat (limited to 'fs/nfs/cache_lib.h')
| -rw-r--r-- | fs/nfs/cache_lib.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/fs/nfs/cache_lib.h b/fs/nfs/cache_lib.h new file mode 100644 index 000000000..220ee409a --- /dev/null +++ b/fs/nfs/cache_lib.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Helper routines for the NFS client caches + * + * Copyright (c) 2009 Trond Myklebust <Trond.Myklebust@netapp.com> + */ + +#include <linux/completion.h> +#include <linux/sunrpc/cache.h> +#include <linux/atomic.h> + +/* + * Deferred request handling + */ +struct nfs_cache_defer_req { + struct cache_req req; + struct cache_deferred_req deferred_req; + struct completion completion; + refcount_t count; +}; + +extern int nfs_cache_upcall(struct cache_detail *cd, char *entry_name); +extern struct nfs_cache_defer_req *nfs_cache_defer_req_alloc(void); +extern void nfs_cache_defer_req_put(struct nfs_cache_defer_req *dreq); +extern int nfs_cache_wait_for_upcall(struct nfs_cache_defer_req *dreq); + +extern int nfs_cache_register_net(struct net *net, struct cache_detail *cd); +extern void nfs_cache_unregister_net(struct net *net, struct cache_detail *cd); +extern int nfs_cache_register_sb(struct super_block *sb, + struct cache_detail *cd); +extern void nfs_cache_unregister_sb(struct super_block *sb, + struct cache_detail *cd); |