On Sun, 2012-12-16 at 02:15 +0000, Eric Wong wrote: > xtu4 <xiaobing.tu@xxxxxxxxx> wrote: > > resend it, due to format error > > > > Subject: [PATCH] when system in low memory scenario, imaging there is a mp3 > > play, ora video play, we need to read mp3 or video file > > from memory to page cache,but when system lack of memory, > > page cache of mp3 or video file will be reclaimed.once read > > in memory, then reclaimed, it will cause audio or video > > glitch,and it will increase the io operation at the same > > time. > > To me, this basically describes how POSIX_FADV_NOREUSE should work. Hi Eric, But why fadvise POSIX_FADV_NOREUSE almost do nothing? Why not set some flag or other things for these use once data? > I would like to have this ability via fadvise (and not CONFIG_). > > Also, I think your patch has too many #ifdefs to be accepted. > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo@xxxxxxxxx. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>