Hi Lukas, How do you think about my comment? Regards, Kazuya Mio 2011/05/13 17:55, Kazuya Mio wrote: > 2011/05/13 15:36, Lukas Czerner wrote: >> That is because due to defensive programming we planted a lot of >> BUG_ON's to prevent the length of the gap cache to be zero, but in this >> case it actually will be zero, because there will be no gap at the end >> of the file. > > Um, I think there is a block (blocksize -1 byte) in gap. > And this gap should be used for the next block searching. > According to ext4_ext_in_cache(), len=0 means the special case > which we have no cache extent, so len=0 should be disallowed. > > Moreover, if we create the file which has 2^32-1 offset, > we can't get extent which starts from this offset with FIEMAP ioctl. > That's why I think the maximum file size should be 2^32-1 * blocksize. > > Regards, > Kazuya Mio -- 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
