* Re: [PATCH 1/2] f2fs: register inodes which is able to donate pages
[not found] ` <Z4k_nKT3V1xuhXGc@google.com>
@ 2025-01-17 7:56 ` Christoph Hellwig
0 siblings, 0 replies; only message in thread
From: Christoph Hellwig @ 2025-01-17 7:56 UTC (permalink / raw)
To: Jaegeuk Kim
Cc: Christoph Hellwig, linux-kernel, linux-f2fs-devel, Al Viro,
Jan Kara, Christian Brauner, linux-fsdevel, linux-api, linux-man,
linux-mm
On Thu, Jan 16, 2025 at 05:19:24PM +0000, Jaegeuk Kim wrote:
> > mean a invalidate_inode_pages2_range. Which is a strange use of the
> > word. what are the use cases? Why is this queued up to a thread and
> > not done inline? Why is this in f2fs and not in common code.
>
> The idea is let apps register some file ranges for page donation and admin
> recliam such pages all togehter if they expect to see memory pressure soon.
> We can rely on LRU, but this is more user-given trigger. I'm not sure whether
> there's a need in general, hence, wanted to put it in f2fs first to get more
> concrete use-cases beyond this Android case.
Well, that's certainly not a file system feature. Please build this
as generic infrastucture and send it to the linux-mm list.
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