On Mar 01, 2007 13:15 -0600, Eric Sandeen wrote: > One thing I'd like to see is a cmd argument as well, to allow for > example allocation vs. reservation (i.e. allocating blocks vs. simply > reserving a number), as well as the inverse of those functions > (un-reservation, de-allocation)? > > If the allocation interface allows allocation/reservation within > arbitrary ranges, if the only way to un-allocate is via a truncate, > that's pretty asymmetric. I'd rather we just get the oft-discussed punch() syscall instead. This is really what "unallocate" would do for persistent allocations and it would be useful for files that were not preallocated. For filesystems that don't implement punch glibc() would do zero-filling of the punched area I guess (to make it equivalent to reading from a hole in the file). Cheers, Andreas -- Andreas Dilger Principal Software Engineer Cluster File Systems, Inc. - 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
