kernel.git/drivers/scsi/sd.h, branch linux-2.6.36.y

scsi/sd: remove big kernel lock

2010-08-07T16:26:08Z

Every user of the BKL in the sd driver is the result of the pushdown from the block layer into the open/close/ioctl functions. The only place that used to rely on the BKL is the sdkp->openers variable, which gets converted into an atomic_t. Nothing else seems to rely on the BKL, since the functions do not touch global data without holding another lock, and the open/close functions are still protected from concurrent execution using the bdev->bd_mutex. Signed-off-by: Arnd Bergmann Cc: linux-scsi@vger.kernel.org Cc: "James E.J. Bottomley" Acked-by: Christoph Hellwig Signed-off-by: Jens Axboe

[SCSI] sd: WRITE SAME(16) / UNMAP support

2009-12-10T14:54:15Z

Implement a function for handling discard requests that sends either WRITE SAME(16) or UNMAP(10) depending on parameters indicated by the device in the block limits VPD. Extract unmap constraints and report them to the block layer. Based in part by a patch by Christoph Hellwig . Signed-off-by: Martin K. Petersen Signed-off-by: James Bottomley

[SCSI] sd: Support disks formatted with DIF Type 2

2009-10-02T14:47:04Z

Disks formatted with DIF Type 2 reject READ/WRITE 6/10/12/16 commands when protection is enabled. Only the 32-byte variants are supported. Implement support for issusing 32-byte READ/WRITE and enable Type 2 drives in the protection type detection logic. Signed-off-by: Martin K. Petersen Signed-off-by: James Bottomley

[SCSI] sd: Detach DIF from block integrity infrastructure

2009-10-02T14:46:39Z

So far we have only issued DIF commands if CONFIG_BLK_DEV_INTEGRITY is enabled. However, communication between initiator and target should be independent of protection information DMA. There are DIF-only host adapters coming out that will be able to take advantage of this. Move the relevant DIF bits to sd.c. Signed-off-by: Martin K. Petersen Signed-off-by: James Bottomley

sd: Physical block size and alignment support

2009-06-21T15:52:37Z

Extract physical block size and lowest aligned LBA from READ CAPACITY(16) response and adjust queue parameters. Report physical block size and alignment when applicable. [jejb: fix up trailing whitespace] Signed-off-by: Martin K. Petersen Signed-off-by: James Bottomley

[SCSI] sd: Make revalidate less chatty

2009-03-18T01:43:52Z

sd_revalidate ends up being called several times during device setup. With this patch we print everything during the first scan. Subsequent invocations will only print a message if the parameter in question has actually changed (LUN capacity has increased, etc.). Signed-off-by: Martin K. Petersen Signed-off-by: James Bottomley

[SCSI] sd: fix compile failure with CONFIG_BLK_DEV_INTEGRITY=n

2008-10-15T12:41:28Z

Signed-off-by: James Bottomley

[SCSI] sd: Correctly handle all combinations of DIF and DIX

2008-10-13T13:28:58Z

The old detection code couldn't handle all possible combinations of DIX and DIF. This version does, giving priority to DIX if the controller is capable. Signed-off-by: Martin K. Petersen Signed-off-by: James Bottomley

Re-introduce "[SCSI] extend the last_sector_bug flag to cover more sectors"

2008-08-06T04:42:21Z

This re-introduces commit 2b142900784c6e38c8d39fa57d5f95ef08e735d8, which was reverted due to the regression it caused by commit fca082c9f1e11ec07efa8d2f9f13688521253f36. That regression was not root-caused by the original commit, it was just uncovered by it, and the real fix was done by Alan Stern in commit 580da34847488b404218d1d7f53b156f245f5555 ("Fix USB storage hang on command abort"). We can thus re-introduce the change that was confirmed by Alan Jenkins to be still required by his odd card reader. Cc: Alan Jenkins Cc: Alan Stern Cc: James Bottomley Signed-off-by: Linus Torvalds

Revert "[SCSI] extend the last_sector_bug flag to cover more sectors"

2008-08-04T23:36:20Z

This reverts commit 2b142900784c6e38c8d39fa57d5f95ef08e735d8, since it seems to break some other USB storage devices (at least a JMicron USB to ATA bridge). As such, while it apparently fixes some cardreaders, it would need to be made conditional on the exact reader it fixes in order to avoid causing regressions. Cc: Alan Jenkins Cc: James Bottomley Signed-off-by: Linus Torvalds