| Message ID | 20250116172438.2143971-1-jaegeuk@kernel.org (mailing list archive) |
|---|---|
| Headers | show |
| Series | add ioctl/sysfs to donate file-backed pages | expand |
Still NAC for sneaking in an almost undocumented MM feature into a file system ioctl. Especially while a discussion on that is still ongoin. And it's still bad that you don't even bother to Cc fsdevel on this, nor linux-api or in this case the mm list. On Thu, Jan 16, 2025 at 05:19:42PM +0000, Jaegeuk Kim wrote: > 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 > > ---end quoted text---
On 01/16, Christoph Hellwig wrote: > Still NAC for sneaking in an almost undocumented MM feature into > a file system ioctl. Especially while a discussion on that is still > ongoin. > > And it's still bad that you don't even bother to Cc fsdevel on this, > nor linux-api or in this case the mm list. Well, I don't want to bother other groups for random APIs, unless I, myself, am super confident this is feasible for generic API. But, let me try to listen to other opinions. > > On Thu, Jan 16, 2025 at 05:19:42PM +0000, Jaegeuk Kim wrote: > > 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 > > > > > ---end quoted text---