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.

Jaegeuk Kim (2):
  f2fs: register inodes which is able to donate pages
  f2fs: add a sysfs entry to request donate file-backed pages

 Documentation/ABI/testing/sysfs-fs-f2fs |  7 ++++
 fs/f2fs/debug.c                         |  3 ++
 fs/f2fs/f2fs.h                          | 14 ++++++-
 fs/f2fs/file.c                          | 52 +++++++++++++++++++++++++
 fs/f2fs/inode.c                         | 14 +++++++
 fs/f2fs/shrinker.c                      | 27 +++++++++++++
 fs/f2fs/super.c                         |  1 +
 fs/f2fs/sysfs.c                         |  8 ++++
 include/uapi/linux/f2fs.h               |  7 ++++
 9 files changed, 132 insertions(+), 1 deletion(-)

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2.48.0.rc2.279.g1de40edade-goog