2002-06-07 13:34:39

by Edward Goggin

Subject: Request to have get_blkfops() and get_chrfops() exported to kerne l modules

This is a request to have both the linux kernel symbols
get_chrfops and get_blkfops exported to kernel modules
in future releases of the linux kernel.

This request is in response to a need we have when building
kernel modules which will filter block and/or character device
i/o by trapping the native block/character i/o requests.

We propose three source modifications as part of this request.
Furthermore, assuming approval of this request, we will supply
a source patch to effect these modifications.

1) EXPORT_SYMBOL references for both get_charfops and
get_blkfops be placed in fs/devices.c.

2) Removal of the static scope qualifier for the
definition of get_chrfops() in fs/devices.c.

3) The file devices.o be added to the list of exported
in fs/Makefile.

Ed Goggin

2002-06-07 13:45:29

by Martin Dalecki

Subject: Re: Request to have get_blkfops() and get_chrfops() exported to kerne l modules

goggin, edward wrote:
> This is a request to have both the linux kernel symbols
> get_chrfops and get_blkfops exported to kernel modules
> in future releases of the linux kernel.
>
> This request is in response to a need we have when building
> kernel modules which will filter block and/or character device
> i/o by trapping the native block/character i/o requests.


The loop device implementation is showing you already
how to achieve this.