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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-device.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-device.h')
| -rw-r--r-- | drivers/md/dm-vdo/thread-device.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/md/dm-vdo/thread-device.h b/drivers/md/dm-vdo/thread-device.h new file mode 100644 index 000000000..494d9c9ef --- /dev/null +++ b/drivers/md/dm-vdo/thread-device.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright 2023 Red Hat + */ + +#ifndef VDO_THREAD_DEVICE_H +#define VDO_THREAD_DEVICE_H + +#include "thread-registry.h" + +void vdo_register_thread_device_id(struct registered_thread *new_thread, + unsigned int *id_ptr); + +void vdo_unregister_thread_device_id(void); + +int vdo_get_thread_device_id(void); + +void vdo_initialize_thread_device_registry(void); + +#endif /* VDO_THREAD_DEVICE_H */ |