https://www.emblogic.com/blog Embedded System and ARM Training Tue, 03 Mar 2020 13:00:06 +0000 en-US hourly 1 http://wordpress.org/?v=3.9.1 https://www.emblogic.com/blog/12/introduction-to-block-driver/ https://www.emblogic.com/blog/12/introduction-to-block-driver/#comments Wed, 16 Dec 2015 11:49:17 +0000 http://www.emblogic.com/blog/?p=13067 Continue reading →]]> Overview :

•  Block Drivers are act as conduit between core memory and secondary storage.
• There is a virtual memory layer between core memory and secondary storage.
• Block Layer could be seen as a part of virtual memory subsystem.
• Block driver provides access to devices that transfer randomly accessible data.
• Block Driver controls the block layer, makes decision about collecting bytes into group of bytes, handle interaction between virtual layer and block layer, block layer and block devices.
• Block Driver collect chunks of bytes into blocks.
• As almost every block device consist of file system also. Therefore block device driver must take care of file system.

 

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