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Block device drivers

Source: Internet
Author: User
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Common block Layer common data structure: Bio Disk descriptor Gendisk
Generic_make_request is the entry point for the universal block layer
IO scheduling layer: Request queue: Request_queue Request Descriptor: Requests
Block device: Block_device registers a block device Register_blkdev a predetermined master device number.
Block device file Operation Descriptor: Open Blkdev_open release blkdev_close llseek block_llseek read Genric_file_read wrtie blkdev_file_write aio_ Read Generic_file_aio_read aio_write blkdev_file_aio_writemmap generic_file_mmap fsync block_fsyncioctl block_ioctl Compate-ioctl compat_blkdev_ioctlreadv generic_file_readv Writev generic_file_wrtie_nolocksendfile generic_file_ Sendfile


Block device driver registration process: Pending additions

Block device drivers

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