[RESEND PATCH 0/4] Implement File-Based optimization functionality

[Jiaming Li]

From: lijiaming3 <lijiaming3@xxxxxxxxxx>

Stoage devices have a long lifespan. Device performance over its
lifespan is not constant and may deteriorate over time. To remedy
this, JEDEC came up with the UFS File-Based-Optimization (FBO)
extension (JC-64.1-22-67). The FBO feature improves this performance
regression via physical defragmentation of the LBA ranges that are
associated with specific files.

This feature expects the following host-device dialog:
1) The host let the device know of lba range(s) of interest. Those
   ranges are typically associated with a specific file. One can
   obtain it from the iNode of the file and some offset calculations.
2) The host ask the device for the current physical fragmentation
   level of this file.
3) Should it requires, the host instruct the device to perform
   defragmentation.
4) Upon successful termination of the defragmentation phase, the host
   may ask for the new fragmentation level of the file.

lijiaming3 (4):
  scsi:ufs:remove sanity check
  scsi:ufs:add File-Based Optimization descriptor
  scsi:ufs:add FBO module
  scsi:ufs:add fbo functionality

 Documentation/ABI/testing/sysfs-driver-ufs | 129 +++++
 drivers/ufs/core/Kconfig                   |  12 +
 drivers/ufs/core/Makefile                  |   1 +
 drivers/ufs/core/ufs-sysfs.c               |  26 ++
 drivers/ufs/core/ufsfbo.c                  | 519 +++++++++++++++++++++
 drivers/ufs/core/ufsfbo.h                  |  23 +
 drivers/ufs/core/ufshcd.c                  |  15 +-
 include/ufs/ufs.h                          |  16 +
 include/ufs/ufshcd.h                       |   1 +
 9 files changed, 734 insertions(+), 8 deletions(-)
 create mode 100644 drivers/ufs/core/ufsfbo.c
 create mode 100644 drivers/ufs/core/ufsfbo.h

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2.38.1