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
