Re: [PATCH] Block layer: separate out queue-oriented ioctls
- From: Joerg.Schilling@xxxxxxxxxxxxxxxxxxx (Joerg Schilling)
- Date: Sat, 17 Feb 2007 22:18:41 +0100
Jens Axboe <jens.axboe@xxxxxxxxxx> wrote:
This will make it possible for cdrecord and related programs to
retrieve reliably the max_sectors value, regardless of whether the
user points it to an sr or an sg device. In particular, this will
resolve Bugzilla entry #7026.
The block bits are fine with me, the sg calling point is a bit of a sore
thumb (a char driver calling into block layer ioctls) though. So the
block layer bits are certainly ok with me, if Doug acks the sg bit I'll
merge everything up.
If you care about this kind of order, you would first need to eliminate the
ability of doing low level things like SG_IO from block drivers as this is
similar low level stuff that rather belongs to low level drivers.
Any driver that allows to use low level interfaces to send RAW SCSI commands
also needs access to other lowlevel stuff like the ability to know the
max. DMA size.
Jörg
--
EMail:joerg@xxxxxxxxxxxxxxxxxxxxxxxxxxx (home) Jörg Schilling D-13353 Berlin
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- References:
- [PATCH] Block layer: separate out queue-oriented ioctls
- From: Alan Stern
- Re: [PATCH] Block layer: separate out queue-oriented ioctls
- From: Jens Axboe
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