> how do the inode->i_dev, i_rdev fit into this?
These are what you see with stat(2).
i_dev gives the device the file is on
i_rdev is usually undefined, but for device special files
it gives the real device.
> Is there a set rule on when/where one should use a buffer head's
> b_dev and when/wher
On Tue, 19 Jun 2001 [EMAIL PROTECTED] wrote:
> All of the md code looks like it copies the buffer head, setting
> b_dev=b_rdev="real device" in the new bh and leaving b_dev==b_rdev="logical
> device" in the original bh. I'm assuming they do this for a reason, but
> it would be nice from a perfor
These are probably dumb questions but I haven't been able to find
definitive answers...
Is there a set rule on when/where one should use a buffer head's b_dev
and when/where one should use b_rdev?
I'm been tracing through the kernel source quite a bit and it seems like
above ll_rw_blk.c's submit
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