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Virtio patches, mainly hotplugging fixes.

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Merge tag 'virtio-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus

Pull virtio update from Rusty Russell:
 "Virtio patches, mainly hotplugging fixes."

* tag 'virtio-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  virtio-blk: return VIRTIO_BLK_F_FLUSH to header.
  virtio-blk: allow toggling host cache between writeback and writethrough
  virtio-blk: Use block layer provided spinlock
  virtio-blk: Reset device after blk_cleanup_queue()
  virtio-blk: Call del_gendisk() before disable guest kick
  virtio: rng: s3/s4 support
  virtio: rng: split out common code in probe / remove for s3/s4 ops
  virtio: rng: don't wait on host when module is going away
  virtio: rng: allow tasks to be killed that are waiting for rng input
  virtio ids: fix comment for virtio-rng
This commit is contained in:
Linus Torvalds 2012-07-30 13:24:37 -07:00
commit 95b18e6995
4 changed files with 137 additions and 27 deletions
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10
include/linux/virtio_blk.h
View file

@ -37,8 +37,14 @@
#define VIRTIO_BLK_F_RO 5 /* Disk is read-only */
#define VIRTIO_BLK_F_BLK_SIZE 6 /* Block size of disk is available*/
#define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */
#define VIRTIO_BLK_F_FLUSH 9 /* Cache flush command support */
#define VIRTIO_BLK_F_WCE 9 /* Writeback mode enabled after reset */
#define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */
#define VIRTIO_BLK_F_CONFIG_WCE 11 /* Writeback mode available in config */
#ifndef __KERNEL__
/* Old (deprecated) name for VIRTIO_BLK_F_WCE. */
#define VIRTIO_BLK_F_FLUSH VIRTIO_BLK_F_WCE
#endif
#define VIRTIO_BLK_ID_BYTES 20 /* ID string length */
@ -69,6 +75,8 @@ struct virtio_blk_config {
/* optimal sustained I/O size in logical blocks. */
__u32 opt_io_size;
/* writeback mode (if VIRTIO_BLK_F_CONFIG_WCE) */
__u8 wce;
} __attribute__((packed));
/*

2
include/linux/virtio_ids.h
View file

@ -32,7 +32,7 @@
#define VIRTIO_ID_NET 1 /* virtio net */
#define VIRTIO_ID_BLOCK 2 /* virtio block */
#define VIRTIO_ID_CONSOLE 3 /* virtio console */
#define VIRTIO_ID_RNG 4 /* virtio ring */
#define VIRTIO_ID_RNG 4 /* virtio rng */
#define VIRTIO_ID_BALLOON 5 /* virtio balloon */
#define VIRTIO_ID_RPMSG 7 /* virtio remote processor messaging */
#define VIRTIO_ID_SCSI 8 /* virtio scsi */