Theodore Ts'o wrote: > I've worked with Jiaying to ready this patch for submission. > > It's currently a mount option for maximum safety, but after we do some > benchmarking to make sure it doesn't degrade performance for buffered > writes, we may want to make this the default. Once really nice side > effect of this patch is that it effectively gives us "guarded mode" by > default, since the blocks are marked as uninitialized and only converted > to be initialized when the I/O has completed for both buffered and > direct I/O writes now. This means that we could possibly change the > default mode to be data=writeback if the extents feature is enabled, > since data=ordered would only needed for safety when writing new > old-style indirect blocks. At least as far as that last bit goes, simply having the extents feature is not sufficient; we allow both formats of files to exist on a filesystem with the extents feature turned on. As to the general idea I'll have to give it more thought. :) -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
