[f2fs-dev,0/2,v2] add ioctl/sysfs to donate file-backed pages

Message

Jaegeuk Kim Jan. 14, 2025, 10:39 p.m. UTC

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(-)