On 01/17, Matthew Wilcox wrote: > On Fri, Jan 17, 2025 at 06:48:55PM +0000, Jaegeuk Kim wrote: > > > I don't understand how this is different from MADV_COLD. Please > > > explain. > > > > MADV_COLD is a vma range, while this is a file range. So, it's more close to > > fadvise(POSIX_FADV_DONTNEED) which tries to reclaim the file-backed pages > > at the time when it's called. The idea is to keep the hints only, and try to > > reclaim all later when admin expects system memory pressure soon. > > So you're saying you want POSIX_FADV_COLD? Yeah, the intention looks similar like marking it cold and paging out later.
