Re: [PATCH] block: fix residual byte count handling

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Tejun Heo wrote:
walt wrote:
Jens Axboe wrote:
On Tue, Mar 04 2008, Mike Galbraith wrote:
On Tue, 2008-03-04 at 10:35 +0100, Jens Axboe wrote:

Looks excellent to me, has a variant of this been tested as OK by the
users reporting the regression?
K3b burning seems to be a nogo here.  This is git pulled this morning
though, so it's a somewhat different tree than previously tested fwtw.
can you please try git as of this morning without any patches applied,
and then pull

git://git.kernel.dk/linux-2.6-block.git for-linus

into that and see if that works?
Unfortunately this doesn't fix a problem I've discussed off-list with
Kiyoshi Ueda, who suggested that I should follow this thread and try
any patches posted here.

Here is what happens when I try to mount a CD (before and after I
pull 'for-linus'):

hdc: ide_cd_check_ireason: wrong transfer direction!
cdrom: failed setting lba address space
hdc: status error: status=0x58 { DriveReady SeekComplete DataRequest }
ide: failed opcode was: unknown
hdc: drive not ready for command
hdc: status error: status=0x58 { DriveReady SeekComplete DataRequest }
ide: failed opcode was: unknown
hdc: drive not ready for command
hdc: status error: status=0x58 { DriveReady SeekComplete DataRequest }
ide: failed opcode was: unknown
hdc: drive not ready for command
hdc: status error: status=0x58 { DriveReady SeekComplete DataRequest }
ide: failed opcode was: unknown
hdc: drive not ready for command
hdc: status error: status=0x58 { DriveReady SeekComplete DataRequest }
ide: failed opcode was: unknown
hdc: drive not ready for command
hdc: status error: status=0x58 { DriveReady SeekComplete DataRequest }
ide: failed opcode was: unknown
hdc: drive not ready for command
hdc: status error: status=0x58 { DriveReady SeekComplete DataRequest }
ide: failed opcode was: unknown
hdc: drive not ready for command
hdc: status error: status=0x58 { DriveReady SeekComplete DataRequest }
ide: failed opcode was: unknown
hdc: drive not ready for command
hdc: status timeout: status=0xd0 { Busy }
ide: failed opcode was: unknown
hdc: DMA disabled
hdc: drive not ready for command
hdc: ATAPI reset complete
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
VFS: busy inodes on changed media.

The mount can take from 5 seconds on up to a minute or so before the
CD can be accessed.

Which version did you try?  There was a recent IDE bug fix which
affected CD recording.  Commit bcd88ac3b2ff2eae3d0fa57a6b02d4fce5392f32
which is included in 2.6.25-rc3.

I pulled from Jens to Linus' latest git, as Jens instructed.  I noticed
no difference at all.

Also, did 2.6.24 work?

Yes, vanilla 2.6.24 works fine.  Your patchlet of earlier today also
didn't fix it, so I'm beginning to think that maybe I'm in the wrong
thread :o)



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