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| author | Zeng Chi <zengchi@kylinos.cn> | 2026-09-21 18:24:42 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-09-22 08:36:16 -0700 |
| commit | 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d (patch) | |
| tree | 660d50d4139cb750fbde1ae3432452c20726c99d /drivers/md/dm-vdo/thread-utils.h | |
| download | linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.tar.gz linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.zip | |
KVM: Don't pre-reserve xarray entries when storing empty/NULL attributesgrafted
Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.
Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'drivers/md/dm-vdo/thread-utils.h')
| -rw-r--r-- | drivers/md/dm-vdo/thread-utils.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/md/dm-vdo/thread-utils.h b/drivers/md/dm-vdo/thread-utils.h new file mode 100644 index 000000000..687ab43e2 --- /dev/null +++ b/drivers/md/dm-vdo/thread-utils.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright 2023 Red Hat + */ + +#ifndef THREAD_UTILS_H +#define THREAD_UTILS_H + +#include <linux/atomic.h> + +/* Thread and synchronization utilities */ + +struct thread; + +void vdo_initialize_threads_mutex(void); +int __must_check vdo_create_thread(void (*thread_function)(void *), void *thread_data, + const char *name, struct thread **new_thread); +void vdo_join_threads(struct thread *thread); + +#endif /* UDS_THREADS_H */ |