xen/blkback: persistent-grants fixes

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This patch contains fixes for persistent grants implementation v2:

 * handle == 0 is a valid handle, so initialize grants in blkback
   setting the handle to BLKBACK_INVALID_HANDLE instead of 0. Reported
   by Konrad Rzeszutek Wilk.

 * new_map is a boolean, use "true" or "false" instead of 1 and 0.
   Reported by Konrad Rzeszutek Wilk.

 * blkfront announces the persistent-grants feature as
   feature-persistent-grants, use feature-persistent instead which is
   consistent with blkback and the public Xen headers.

 * Add a consistency check in blkfront to make sure we don't try to
   access segments that have not been set.

Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Roger Pau Monne <roger.pau@citrix.com>
[v1: The new_map int->bool had already been changed]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

...

This commit is contained in:

Roger Pau Monne 2012-11-02 16:43:04 +01:00 • committed by Konrad Rzeszutek Wilk

parent 0a8704a51f

commit cb5bd4d19b

3 changed files with 9 additions and 5 deletions

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9

drivers/block/xen-blkback/blkback.c

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2

drivers/block/xen-blkback/xenbus.c

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3

drivers/block/xen-blkfront.c

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