On Wed, 2 Mar 2011 16:38:06 +0800 Liu Yuan wrote: > From: Liu Yuan <tailai.ly@xxxxxxxxxx> > > Signed-off-by: Liu Yuan <tailai.ly@xxxxxxxxxx> > --- > arch/x86/Kconfig.debug | 9 +++++++++ > 1 files changed, 9 insertions(+), 0 deletions(-) > > diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug > index 615e188..f29e32d 100644 > --- a/arch/x86/Kconfig.debug > +++ b/arch/x86/Kconfig.debug > @@ -304,4 +304,13 @@ config DEBUG_STRICT_USER_COPY_CHECKS > > If unsure, or if you run an older (pre 4.4) gcc, say N. > > +config PAGE_CACHE_ACCT > + bool "Page cache accounting" > + ---help--- > + Enabling this options to account for page cache hit/missed number of > + times. This would allow user space applications get better knowledge > + of underlying page cache system by reading virtual file. The statitics > + per partition are collected. > + > + If unsure, say N. > endmenu > -- rewrite: Enable this option to provide for page cache hit/miss counters. This allows userspace applications to obtain better knowledge of the underlying page cache subsystem by reading a virtual file. Statistics are collect per partition. questions: what virtual file? what kind of partition? --- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code *** -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>