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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-17 13:39:11 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-17 13:39:11 -0800 |
commit | 9228ff90387e276ad67b10c0eb525c9d6a57d5e9 (patch) | |
tree | e7c87b68daba7cf7ca4c342c6b52165bd78fbe16 /drivers/block/xen-blkback/common.h | |
parent | 9360b53661a2c7754517b2925580055bacc8ec38 (diff) | |
parent | d2ec180c23a5a1bfe34d8638b0342a47c00cf70f (diff) | |
download | linux-9228ff90387e276ad67b10c0eb525c9d6a57d5e9.tar.bz2 |
Merge branch 'for-3.8/drivers' of git://git.kernel.dk/linux-block
Pull block driver update from Jens Axboe:
"Now that the core bits are in, here are the driver bits for 3.8. The
branch contains:
- A huge pile of drbd bits that were dumped from the 3.7 merge
window. Following that, it was both made perfectly clear that
there is going to be no more over-the-wall pulls and how the
situation on individual pulls can be improved.
- A few cleanups from Akinobu Mita for drbd and cciss.
- Queue improvement for loop from Lukas. This grew into adding a
generic interface for waiting/checking an even with a specific
lock, allowing this to be pulled out of md and now loop and drbd is
also using it.
- A few fixes for xen back/front block driver from Roger Pau Monne.
- Partition improvements from Stephen Warren, allowing partiion UUID
to be used as an identifier."
* 'for-3.8/drivers' of git://git.kernel.dk/linux-block: (609 commits)
drbd: update Kconfig to match current dependencies
drbd: Fix drbdsetup wait-connect, wait-sync etc... commands
drbd: close race between drbd_set_role and drbd_connect
drbd: respect no-md-barriers setting also when changed online via disk-options
drbd: Remove obsolete check
drbd: fixup after wait_even_lock_irq() addition to generic code
loop: Limit the number of requests in the bio list
wait: add wait_event_lock_irq() interface
xen-blkfront: free allocated page
xen-blkback: move free persistent grants code
block: partition: msdos: provide UUIDs for partitions
init: reduce PARTUUID min length to 1 from 36
block: store partition_meta_info.uuid as a string
cciss: use check_signature()
cciss: cleanup bitops usage
drbd: use copy_highpage
drbd: if the replication link breaks during handshake, keep retrying
drbd: check return of kmalloc in receive_uuids
drbd: Broadcast sync progress no more often than once per second
drbd: don't try to clear bits once the disk has failed
...
Diffstat (limited to 'drivers/block/xen-blkback/common.h')
-rw-r--r-- | drivers/block/xen-blkback/common.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h index 9a54623e52d7..6072390c7f57 100644 --- a/drivers/block/xen-blkback/common.h +++ b/drivers/block/xen-blkback/common.h @@ -34,6 +34,7 @@ #include <linux/vmalloc.h> #include <linux/wait.h> #include <linux/io.h> +#include <linux/rbtree.h> #include <asm/setup.h> #include <asm/pgalloc.h> #include <asm/hypervisor.h> @@ -160,10 +161,21 @@ struct xen_vbd { sector_t size; unsigned int flush_support:1; unsigned int discard_secure:1; + unsigned int feature_gnt_persistent:1; + unsigned int overflow_max_grants:1; }; struct backend_info; + +struct persistent_gnt { + struct page *page; + grant_ref_t gnt; + grant_handle_t handle; + uint64_t dev_bus_addr; + struct rb_node node; +}; + struct xen_blkif { /* Unique identifier for this interface. */ domid_t domid; @@ -190,6 +202,10 @@ struct xen_blkif { struct task_struct *xenblkd; unsigned int waiting_reqs; + /* tree to store persistent grants */ + struct rb_root persistent_gnts; + unsigned int persistent_gnt_c; + /* statistics */ unsigned long st_print; int st_rd_req; |