Method and system for optimizing secure erase

A safe and memory technology, applied in the input/output process of data processing, instruments, electrical and digital data processing, etc., can solve problems such as user experience stuck, disk access blocking, system abnormality, etc., to achieve a good product experience and improve operation. The effect of fluency

Active Publication Date: 2016-08-03
FUZHOU ROCKCHIP SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If there are a large number of areas that need to be securely erased, the normal disk access of the

Method used

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  • Method and system for optimizing secure erase
  • Method and system for optimizing secure erase

Examples

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Example Embodiment

[0030] Such as figure 1 As shown, the method for optimizing secure erasure of the present invention includes the following steps:

[0031] Step 1. When the secure erase is started, the kernel space obtains the data address required for secure erase;

[0032] Step 2. Record the data address in the interval marking unit, and immediately return an erasure success signal to the system. The interval marking unit opens up a space in the memory for storing the data address required for secure erasure;

[0033] Step 3. Start the daemon to query the IO status of the system;

[0034] Step 4. If the IO state of the system is in the idle state, then the secure erase will be started; if not, the secure erase will not be started;

[0035] Step 5. If in the process of secure erasing;

[0036] When the user space performs a write operation, the secure erase is suspended; the kernel space detects the address parameter of the write request passed by the user control. If the address parameter falls within ...

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Abstract

The invention provides a method for optimizing secure erase. The method comprises the following steps: acquiring a data address needing secure erase in a kernel space while starting to execute secure erase; recording the data address in an interval marking unit, and immediately returning an erase-successful signal to the system; starting an IO state of a daemon process query system; starting to execute secure erase when the IO state of the system is in an idle condition, otherwise not starting to execute secure erase. The invention also provides a system for optimizing secure erase. The operating smoothness of the system in the secure erase process is improved, and good product experience is gained.

Description

technical field [0001] The invention relates to a method and system for optimizing secure erasing. Background technique [0002] The current embedded system requires a large number of security erase operations for emmc particles to ensure the unrecoverable deletion of disk data. Secure Erase is different from regular erase operations in that it is executed exclusively, and other read and write operations must wait for it to complete. If there are a large number of areas that need to be securely erased, the normal disk access of the system will be blocked, causing user experience to be stuck, and even causing system abnormalities. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method and system for optimizing secure erasing, improve the running fluency of the system in the process of secure erasing, and obtain good product experience. [0004] One of the present invention is achieved like this: a kind of meth...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/061G06F3/0652G06F3/0676
Inventor 林涛
Owner FUZHOU ROCKCHIP SEMICON
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