Patent ID: 11954352
Assignee: DELL PRODUCTS L.P.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 12:
13. The computer-implemented method of claim 12, further comprising:
reading the reference count of the page while holding the non-exclusive lock of the page;
responsive to said reading, determining that the reference count is less than one; and
responsive to determining the reference count is less than one, performing second processing including:
acquiring and holding an exclusive lock on the page;
rereading the reference count of the page while holding the exclusive lock of the page;
responsive to said rereading, determining whether the reference count of the page is greater than zero;
responsive to determining the reference count is greater than zero, determining that the reference count is valid; and
responsive to determining that the reference count is not greater than zero, determining that the reference count is invalid and denotes an error condition.