Messages in this thread | | | Date | Sat, 29 Mar 2003 18:24:02 +0100 (MET) | From | Bartlomiej Zolnierkiewicz <> | Subject | Re: linux kernel IDE development process question |
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Hey,
On 29 Mar 2003, Jeremy Jackson wrote:
> Hello IDE people, > > I'd like to get input from everyone involved in drivers/ide/ on the > current development process. > > I would like to know what code is kept in sync between 2.4/2.5 > (2.2/2.0?). This way I can start by understanding what is already being > done. This is related to the recent "hdparm and removable IDE?" thread > on LKML. > > I would like to start by declaring ide_hwifs[] static, and removing the > extern ide_hwifs from ide.h. all references to ide_hwifs[] will be > converted to macros and/or access method functions, that return a > pointer to a particular ide_hwifs_t. for_each_hwif() and replacements > for whatever else is in use will be provided as well, initially just > doing the same thing that is done now, ie iterating through ide_hwifs[].
Yes, I've been thinking about this recently and I think this is the way to go.
> There's more to my plan, that's just to get the discussion going. I > will only address what can be easily merged into all currently supported > kernel trees, I just need to know what they are.
If it will be merged any time soon you may call yourself lucky :-).
> by creating a new file ide-kernel.[ch], and moving the ide_hwifs[] and > accessor functions to it, each kernel tree can implement it differently > without complicating backports for the common stuff. Initially the > changes will *not* alter any behaviour, just jockeying stuff into place
You should just commit changes to 2.5 and later port it to 2.4.
> to make that painless when the time comes. (think about it: if the > access methods return pointers, who's going to notice when ide_hwifs[] > is replaced with a linked list?)
Yep, but probably there will be some problems in transition.
> My motivation: I'd *really* like to be able to sell entry level PC > servers with hotswap raid1. I'm not in a hurry, baby steps are ok, I > just want to get the ball rolling. It's all negotiable. I'm no expert > here. > > Regards, > > Jeremy > -- > Jeremy Jackson <jerj@coplanar.net>
Regards -- Bartlomiej Zolnierkiewicz
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