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authorBob Liu <bob.liu@oracle.com>2015-04-03 14:42:58 +0800
committerDavid Vrabel <david.vrabel@citrix.com>2015-04-27 11:40:10 +0100
commit325d73bf8fea8af2227240b7305253fb052d3a68 (patch)
tree668f710fb14540c3ac44fc9dbd83059a8acd1976 /drivers/xen
parentb787f68c36d49bb1d9236f403813641efa74a031 (diff)
downloadlinux-325d73bf8fea8af2227240b7305253fb052d3a68.tar.bz2
xen/blkback: safely unmap purge persistent grants
Commit c43cf3ea8385 ("xen-blkback: safely unmap grants in case they are still in use") use gnttab_unmap_refs_async() to wait until the mapped pages are no longer in use before unmapping them, but that commit missed the persistent case. Purge persistent pages can't be unmapped either unless no longer in use. Signed-off-by: Bob Liu <bob.liu@oracle.com> Acked-by: Roger Pau Monné <roger.pau@citrix.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
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