On 2012-04-26, at 6:51 PM, Dave Chinner wrote: > On Thu, Apr 26, 2012 at 02:32:36PM +0100, David Howells wrote: >> I wonder if there's a way to make this explicit - or is it something that if >> the bit isn't set, you can't use the value in st_blksize. >> I wonder if this value always has to be non-zero to make sure existing >> stat() doesn't explode. > > More likely it probably needs to be non-zero to prevent applications > doing division by block size from exploding... ;)
Right, and any application which knows it needs the blocksize should also be requesting it when using the statxat() (or whatever) syscall. Cheers, Andreas