Re: need help on block device driver.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi,

>
> I have used generic_make_request function. before 
> that i have filled up the struture buffer_head. 
> Iniatially i am trying to write just one block of 
> size 512 bytest of data  in a raw hard disk. I need 
> to know few things
>

Use "sync_dirty_buffer()" to write buffer heads instead of "make_generic_request()"

   .
   .
   .
   mark_buffer_dirty(bh);
   sync_dirty_buffer(bh);
   .
   .
   .
>
> 1) what value to be given for the member b_blocknr, 
> b_rsector, b_dev and b_rdev.
>
> 2) other thing, is it possible to write on a hard 
> disk without a file system.
>

Yes, you can write to raw partition (without any file system) by just setting it's blocksize correctly
use "set_blocksize()" for that.

niTin



--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive:       http://mail.nl.linux.org/kernelnewbies/
FAQ:           http://kernelnewbies.org/faq/



[Index of Archives]     [Newbies FAQ]     [Linux Kernel Mentors]     [Linux Kernel Development]     [IETF Annouce]     [Git]     [Networking]     [Security]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux RAID]     [Linux SCSI]     [Linux ACPI]
  Powered by Linux