Hi, Apologies if this is obvious, but why is writeback_percent capped at 40%? To always have some free space to cache reads from the backing device? To protect the user and limit the impact of an SSD failure (at least to some degree)? The vm subsystem seems to have had similar values in the past (10 to start background writeback, 40 to make the writer synchronous), was bcache maybe inspired by these values? Thanks! Arne -- Arne Wiebalck CERN IT -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
