公开(公告)号：US20250086141A1

公开(公告)日：2025-03-13

申请号：US18540699

申请日：2023-12-14

Applicant: Apple Inc.

Inventor： Meha N. DESAI ,  Eric B. TAMURA ,  Cameron S. BIRSE ,  Jason R. THORPE ,  Madhuree DAYANAND ,  Yair SCHIFF ,  Oded SHOSHANI ,  Idan FISCHMAN

IPC: G06F16/13 ,  G06F16/17

Abstract: Disclosed herein are techniques for tracking file system (FS) utilization by a plurality of applications. According to some embodiments, a technique can be implemented by a computing device on which the FS is implemented, and includes the steps of (1) receiving, from an application among the plurality of applications, a request to perform an input/output (I/O) operation pertaining to a first FS object, where the request includes a unique identifier (ID) associated with the application, (2) creating or locating, within the FS, the first FS object, (3) performing the I/O operation against the first FS object, (4) creating or locating, within the FS, a second FS object associated with the unique ID, and (5) updating the second FS object to reflect the I/O operation. Other techniques include observing, analyzing, etc., FS utilization by the plurality of applications.

公开(公告)号：US20200233839A1

公开(公告)日：2020-07-23

申请号：US16673820

申请日：2019-11-04

Applicant: Apple Inc.

Inventor： Meha N. DESAI ,  Eric B. TAMURA

IPC: G06F16/17 ,  G06F16/13 ,  G06F8/65

Abstract: A device implementing a system for defragmenting metadata of a filesystem includes a processor configured to, in response to receiving a trigger from a server remote from the device, obtain the metadata from a first data structure, the first data structure comprising a first set of one or more nodes and a second set of one or more nodes, and insert the metadata obtained from the first data structure into a third set of one or more nodes of a second data structure, wherein the third set of one or more nodes omits one or more entries from the second set of nodes. The at least one processor is further configured to, in accordance with a determination that the metadata was successfully inserted into the second data structure, provide the second data structure as a replacement of the first data structure for the filesystem.

公开(公告)号：US20190196732A1

公开(公告)日：2019-06-27

申请号：US16124147

申请日：2018-09-06

Applicant: Apple Inc.

Inventor： Meha N. DESAI ,  Eric B. TAMURA

IPC: G06F3/06 ,  G06F17/30

CPC classification number: G06F3/0631 ,  G06F3/0604 ,  G06F3/0643 ,  G06F3/0679 ,  G06F16/122

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.