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xen/blkfront: correct purging of persistent grants 

Commit a46b53672b ("xen/blkfront: cleanup
stale persistent grants") introduced a regression as purged persistent
grants were not pu into the list of free grants again. Correct that.

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Juergen Gross 2018-09-28 09:28:27 +02:00 committed by Jens Axboe
parent 15c2068876
commit 6c76786740
1 changed files with 2 additions and 2 deletions
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4
drivers/block/xen-blkfront.c
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@ -2670,8 +2670,8 @@ static void purge_persistent_grants(struct blkfront_info *info)
list_del(&gnt_list_entry->node);
gnttab_end_foreign_access(gnt_list_entry->gref, 0, 0UL);
rinfo->persistent_gnts_c--;
__free_page(gnt_list_entry->page);
kfree(gnt_list_entry);
gnt_list_entry->gref = GRANT_INVALID_REF;
list_add_tail(&gnt_list_entry->node, &rinfo->grants);
}
spin_unlock_irqrestore(&rinfo->ring_lock, flags);