Messages in this thread | | | Date | Sat, 20 Jun 2009 19:35:03 +0530 | Subject | generic_make_request fucntion for scsi_disk | From | Ravish Tayal <> |
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Hello,
I am debugging Filesystem code for USB mass storage devices. I need help to figure out after generic_make_request how the request is placed to scsi disk (sd) requeset queue and than how sd qeueuecommand to usb_storeage thread. (in which context, is it system call context)
inside generic_make_request
1. q = bdev_get_queue(bio->bi_bdev); [is sd.c register queue this queue or any other scsi file?] 2. ret = q->make_request_fn(q, bio); [which file contain this make_request_fn for scsi disk driver (generic)]
As per my unsderanding flow is like Fat_writepage ->_block_write_full_page --> blkdev_writepage--> block_write_full_page-->submit_bh-->generic_make_request ??? (sd ??) ----> queuecommand
Please suggest any sorce file, link or document.
with thanks Ravish
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