On 02/03, Christoph Hellwig wrote: > On Fri, Jan 31, 2025 at 10:27:55PM +0000, Jaegeuk Kim wrote: > > Note, let me keep improving this patch set, while trying to get some feedbacks > > from MM and API folks from [1]. > > Please actually drive it instead of only interacting once after > I told you to. The feedback is clearly that it is a MM thing, so please > drive it forward instead of going back to the hacky file system version. I keep saying working in parallel for production. And, no worries, I won't merge this to -next until I get the feedback from the MM folks. I was waiting for a couple of weeks before bothering them, so will ping there. > > > > > 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. > > > > I'd like to propose this API in F2FS only, since > > 1) the use-case is quite limited in Android at the moment. Once it's generall > > accepted with more use-cases, happy to propose a generic API such as fadvise. > > Please chime in, if there's any needs. > > > > 2) it's file-backed pages which requires to maintain the list of inode objects. > > I'm not sure this fits in MM tho, also happy to listen to any feedback. > > > > [1] https://lore.kernel.org/lkml/Z4qmF2n2pzuHqad_@xxxxxxxxxx/ > > > > Change log from v7: > > - change the sysfs entry to reclaim pages in all f2fs mounts > > > > Change log from v6: > > - change sysfs entry name to reclaim_caches_kb > > > > Jaegeuk Kim (2): > > f2fs: register inodes which is able to donate pages > > f2fs: add a sysfs entry to request donate file-backed pages > > > > 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 | 60 +++++++++++++++++ > > fs/f2fs/inode.c | 14 ++++ > > fs/f2fs/shrinker.c | 90 +++++++++++++++++++++++++ > > fs/f2fs/super.c | 1 + > > fs/f2fs/sysfs.c | 63 +++++++++++++++++ > > include/uapi/linux/f2fs.h | 7 ++ > > 9 files changed, 258 insertions(+), 1 deletion(-) > > > > -- > > 2.48.1.362.g079036d154-goog > > > > > ---end quoted text---
