xen: check if there are clients waiting in gnttab_end_foreign_access_references
Without a call to check_free_callbacks() clients waiting for grant references would not be woken up even when there are sufficient grant references available. The check was likely left out as a mistake when the function was first added. Note that other functions used to free grant references already call check_free_callbacks. Submitted by: pratyush Reviewed by: royger Differential review: https://reviews.freebsd.org/D15899
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=335490
@ -245,6 +245,7 @@ gnttab_end_foreign_access_references(u_int count, grant_ref_t *refs)
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gnttab_free_count += count;
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gnttab_entry(tail) = gnttab_free_head;
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gnttab_free_head = head;
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check_free_callbacks();
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mtx_unlock(&gnttab_list_lock);
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}
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}
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