Description: FLASH chip for serial access operation, the kernel can write directly on the chip to achieve, but the slower the response speed will use the chip to read and write response time longer, throughput decreases. Thus, by maintaining the internal kernel data buffer called the cache data buffer to reduce the chip access frequency. Cache containing recently been used serial Flash data.
When reading data the chip when trying to start the kernel cache read. If the data is already in the cache, then the kernel does not have to read the data the chip. If the data is not in the cache, then the kernel data read the chip, and buffer up, so the next time you use do not need to read the chip.
However, due to the relatively large capacity Serial Flash, Flash content will all have a buffer is not feasible, can only be part of the contents of the buffer up in Flash memory. The algorithm used to attempt as much valid data stored in the cache in.
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File list (Check if you may need any files):
list_cache
..........\.buf_interface.h.swp
..........\Makefile
..........\buf_interface.c
..........\buf_interface.h
..........\list.h
..........\main.c
..........\tags
..........\test
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