linux/drivers/block, branch v2.6.25

cciss: error: implicit declaration of function 'sg_init_table'

2008-04-11T15:06:44Z

This patch adds the missing include directive to the cciss.c source file. This was discovered by our release team when building the kernel for the Alpha architecture. Errors were found as references to functions 'sg_init_table' and 'sg_page' do not exist without the include for Alpha. Signed-off-by: Mike Pagano Cc: Jens Axboe Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ub: remove BUG() after __blk_end_request and fix the condition causing it

2008-04-09T01:25:52Z

When __blk_end_request returns nonzero, it means that the request was not completely processed and some BIOs are still attached. Since we have dequeued it by that time, it means leaking requests and hanging processes, which is why BUG() was in there. In ub this happens if a packet request ends normally, but with residue (e.g. when scsi_id issues INQUIRY). The fix is to make sure that arguments passed to __blk_end_request are correct: the full request length and not just transferred length. The transferred length is indicated to applications by adjusting rq->data_len with old, unchanged code outside of this patch. Signed-off-by: Pete Zaitcev Cc: Kiyoshi Ueda Cc: Greg KH Cc: Boaz Harrosh Cc: Martin Schwidefsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

nbd: prevent sock_xmit from attempting to use a NULL socket

2008-04-02T22:28:19Z

NBD does not protect the nbd_device's socket from becoming NULL during receives. This closes a race with the NBD_CLEAR_SOCK ioctl (nbd-client -d) setting the nbd_device's socket to NULL right before NBD calls sock_xmit. Signed-off-by: Mike Snitzer Cc: Paul Clements Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

2008-03-18T14:43:14Z

* 'for-linus' of git://git.kernel.dk/linux-2.6-block: Revert "unexport bio_{,un}map_user" relay: fix subbuf_splice_actor() adding too many pages The ps2esdi driver was marked as BROKEN more than two years ago due to being

virtio: Fix sysfs bits to have proper block symlink

2008-03-17T11:58:15Z

Fix up so that the virtio_blk devices in sysfs link correctly to their block device. This then allows them to be detected by hal, etc Signed-off-by: Jeremy Katz Signed-off-by: Rusty Russell

The ps2esdi driver was marked as BROKEN more than two years ago due to being

2008-03-17T08:03:05Z

no longer working for some time. A driver that had been marked as BROKEN for such a long time seems to be unlikely to be revived in the forseeable future. But if anyone wants to ever revive this driver, the code is still present in the older kernel releases. Signed-off-by: Adrian Bunk Acked-by: Alan Cox Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Jens Axboe

block: floppy: fix rmmod lockup

2008-03-13T20:11:43Z

Floppy rmmod locks up when no such hardware was initialized, since there is nobody to wake the remove code up. Remove the completion, because release is called during platform_unregister anyway. Signed-off-by: Jiri Slaby Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[POWERPC] Fix viodasd driver with scatterlist debug

2008-03-12T23:09:28Z

The iSeries viodasd drivers does some very strange things with scatterlists, one of these causing a BUG_ON to trigger when scatterlist debugging is enabled due to initializing the scatterlist with memset instead of sg_init_table(). This fixes it by using sg_init_table(). The rest of the stuff it does to that poor list is still pretty awful but it will work. I may look into fixing things in a nicer way some other time. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras

pktcdvd: reduce stack consumption

2008-03-05T00:35:12Z

On my system, pkt_open() consumes 584 bytes because the compiler decides to inline lots of functions that would not normally be part of long call chains. The following patch fixes that problem on my system. Signed-off-by: Peter Osterlund Cc: Nix Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

cciss: remove READ_AHEAD define and use block layer defaults

2008-03-04T10:28:43Z

This patch removes the #define READ_AHEAD 1024 from the driver and uses the block layer defaults, instead. We have found that under certain workloads the setting can cause a disk connected to the e200 controller to go offline. If the disk hiccups the link may try to downshift but the controller is never notified that the link successfully completed the renegotiation. We've also found that performance using the block layer default of 32 pages was on par with the 1024 setting. We tried setting it to zero at one time based on info from our firmware guys but that killed performance. Turns out we were talking about 2 different read ahead settings. Please consider this for inclusion. Signed-off-by: Mike Miller Signed-off-by: Jens Axboe