Merge branch 'for-3.2/drivers' of git://git.kernel.dk/linux-block
* 'for-3.2/drivers' of git://git.kernel.dk/linux-block: (30 commits) virtio-blk: use ida to allocate disk index hpsa: add small delay when using PCI Power Management to reset for kump cciss: add small delay when using PCI Power Management to reset for kump xen/blkback: Fix two races in the handling of barrier requests. xen/blkback: Check for proper operation. xen/blkback: Fix the inhibition to map pages when discarding sector ranges. xen/blkback: Report VBD_WSECT (wr_sect) properly. xen/blkback: Support 'feature-barrier' aka old-style BARRIER requests. xen-blkfront: plug device number leak in xlblk_init() error path xen-blkfront: If no barrier or flush is supported, use invalid operation. xen-blkback: use kzalloc() in favor of kmalloc()+memset() xen-blkback: fixed indentation and comments xen-blkfront: fix a deadlock while handling discard response xen-blkfront: Handle discard requests. xen-blkback: Implement discard requests ('feature-discard') xen-blkfront: add BLKIF_OP_DISCARD and discard request struct drivers/block/loop.c: remove unnecessary bdev argument from loop_clr_fd() drivers/block/loop.c: emit uevent on auto release drivers/block/cpqarray.c: use pci_dev->revision loop: always allow userspace partitions and optionally support automatic scanning ... Fic up trivial header file includsion conflict in drivers/block/loop.c
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18 changed files with 637 additions and 122 deletions
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@ -71,3 +71,10 @@ Description: Value of 1 indicates the controller can honor the reset_devices
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a dump device, as kdump requires resetting the device in order
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to work reliably.
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Where: /sys/bus/pci/devices/<dev>/ccissX/transport_mode
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Date: July 2011
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Kernel Version: 3.0
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Contact: iss_storagedev@hp.com
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Description: Value of "simple" indicates that the controller has been placed
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in "simple mode". Value of "performant" indicates that the
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controller has been placed in "performant mode".
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@ -78,6 +78,16 @@ The device naming scheme is:
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/dev/cciss/c1d1p2 Controller 1, disk 1, partition 2
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/dev/cciss/c1d1p3 Controller 1, disk 1, partition 3
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CCISS simple mode support
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-------------------------
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The "cciss_simple_mode=1" boot parameter may be used to prevent the driver
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from putting the controller into "performant" mode. The difference is that
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with simple mode, each command completion requires an interrupt, while with
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"performant mode" (the default, and ordinarily better performing) it is
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possible to have multiple command completions indicated by a single
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interrupt.
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SCSI tape drive and medium changer support
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------------------------------------------
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