On Sat, Apr 27, 2013 at 03:18:57AM +0400, Glauber Costa wrote: > The sysctl knob sysctl_vfs_cache_pressure is used to determine which > percentage of the shrinkable objects in our cache we should actively try > to shrink. > > It works great in situations in which we have many objects (at least > more than 100), because the aproximation errors will be negligible. But > if this is not the case, specially when total_objects < 100, we may end > up concluding that we have no objects at all (total / 100 = 0, if total > < 100). > > This is certainly not the biggest killer in the world, but may matter in > very low kernel memory situations. > > [ v2: fix it for all occurrences of sysctl_vfs_cache_pressure ] > > Signed-off-by: Glauber Costa <glommer@xxxxxxxxxx> > Reviewed-by: Carlos Maiolino <cmaiolino@xxxxxxxxxx> > Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> > CC: Dave Chinner <david@xxxxxxxxxxxxx> > CC: "Theodore Ts'o" <tytso@xxxxxxx> > CC: Al Viro <viro@xxxxxxxxxxxxxxxxxx> Acked-by: Mel Gorman <mgorman@xxxxxxx> -- Mel Gorman SUSE Labs -- 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>