Apple Inc.
Flexible over-provisioning of storage space within solid-state storage devices (SSDs)

Abstract:

The embodiments set forth a technique for over-provisioning storage space within a solid-state storage device (SSD). In particular, a file system can (1) receive a first request to create a file, where the first request includes a size for the file, (2) identifying at least one extent that corresponds to storage space within the SSD that satisfies the size for the file, and associating the file with the at least one extent to indicate that the storage space is occupied, (3) receive a second request to cause (i) the file to remain established within the file system, and (ii) the storage space to be marked free within the SSD, and (4) carrying out the second request by causing the storage space to be marked free within the SSD.