On Fri, May 22, 2026 at 03:59:45AM +0000, Jaegeuk Kim wrote: > On 05/21, Matthew Wilcox wrote: > > On Thu, May 21, 2026 at 11:57:48AM -0400, Theodore Tso wrote: > > > So let me get this straight. This is a magic xattr interface which is > > > not even persisted in the file system, but instead sets a 32-bit > > > bitmask in the struct inode which disappears once the inode gets > > > flushed from the inode stack. And it uses a generic xattr name, > > > "user.fadvise". > > > > > > There's no way in *hell* any other file system is likely to adopt such > > > a broken interface, so why didn't you just use an ioctl to set this > > > magic f2fs-specific flag? > > > > I mean, yes, this API is horrendous. But it's just another example of > > f2fs thinking it's somehow special and not just enabling large folios > > like other filesystems do. This hurts everyone, not just people who use > > f2fs. > > >From the production viewpoint, I raised a concern on setting large folio by > default, since that exhausts lots of high-order pages, which were needed for > essential system services and critical apps.
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