Example embodiments provide access to an updated file performed by at least one processor, wherein responsive to receiving a first list of logical page numbers (LPNs) and a second list of LPNs for an update, wherein the first list of LPNs is mapped to a first list of physical page numbers (PPNs), and the second list of LPNs is mapped to a second list of PPNs, the method, comprising: atomically remapping the first list of LPNs so that the first list of LPNs is mapped to the second list of PPNs; and trimming a mapping of the first list of LPNs to the first list of PPNs.