[PATCH 0/2 v5] add ioctl/sysfs to donate file-backed pages

[Jaegeuk Kim]

If users clearly know which file-backed pages to reclaim in system view, they
can use this ioctl() to register in advance and reclaim all at once later.

Change log from v4:
 - fix range handling

Change log from v3:
 - cover partial range

Change log from v2:
 - add more boundary checks
 - de-register the range, if len is zero

Jaegeuk Kim (1):
  f2fs: add a sysfs entry to request donate file-backed pages

Yi Sun (1):
  f2fs: Optimize f2fs_truncate_data_blocks_range()

 Documentation/ABI/testing/sysfs-fs-f2fs |  7 ++++++
 fs/f2fs/f2fs.h                          |  2 ++
 fs/f2fs/file.c                          | 29 +++++++++++++++++++++----
 fs/f2fs/shrinker.c                      | 27 +++++++++++++++++++++++
 fs/f2fs/sysfs.c                         |  8 +++++++
 5 files changed, 69 insertions(+), 4 deletions(-)

-- 
2.48.0.rc2.279.g1de40edade-goog