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/linux/Documentation/ABI/testing/
H A Dsysfs-driver-xen-blkbackdiff 973e5405f2f67ddbb2bf07b3ffc71908a37fea8e Mon Aug 13 16:01:10 CEST 2018 Juergen Gross <jgross@suse.com> xen/blkback: don't keep persistent grants too long

Persistent grants are allocated until a threshold per ring is being
reached. Those grants won't be freed until the ring is being destroyed
meaning there will be resources kept busy which might no longer be
used.

Instead of freeing only persistent grants until the threshold is
reached add a timestamp and remove all persistent grants not having
been in use for a minute.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
/linux/drivers/block/xen-blkback/
H A Dcommon.hdiff 973e5405f2f67ddbb2bf07b3ffc71908a37fea8e Mon Aug 13 16:01:10 CEST 2018 Juergen Gross <jgross@suse.com> xen/blkback: don't keep persistent grants too long

Persistent grants are allocated until a threshold per ring is being
reached. Those grants won't be freed until the ring is being destroyed
meaning there will be resources kept busy which might no longer be
used.

Instead of freeing only persistent grants until the threshold is
reached add a timestamp and remove all persistent grants not having
been in use for a minute.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
H A Dblkback.cdiff 973e5405f2f67ddbb2bf07b3ffc71908a37fea8e Mon Aug 13 16:01:10 CEST 2018 Juergen Gross <jgross@suse.com> xen/blkback: don't keep persistent grants too long

Persistent grants are allocated until a threshold per ring is being
reached. Those grants won't be freed until the ring is being destroyed
meaning there will be resources kept busy which might no longer be
used.

Instead of freeing only persistent grants until the threshold is
reached add a timestamp and remove all persistent grants not having
been in use for a minute.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>