Am Donnerstag, 18. Dezember 2014, 13:22:20 schrieb leroy christophe: Hi Leroy, Herbert, >Le 18/12/2014 13:15, Stephan Mueller a écrit : >> Hi Herbert, >> >> While testing the vmsplice/splice interface of algif_hash I was made >> aware of the problem that data blobs larger than 16 pages do not seem >> to be hashed properly. >> >> For testing, a file is mmap()ed and handed to vmsplice / splice. If >> the file is smaller than 2**16, the interface returns the proper >> hash. However, when the file is larger, only the first 2**16 bytes >> seem to be used. >> >> When adding printk's to hash_sendpage, I see that this function is >> invoked exactly 16 times where the first 15 invocations have the >> MSG_MORE flag set and the last invocation does not have MSG_MORE. > >Hi Stephan, > >I have already noticed the same issue and proposed a patch, but I never >got any feedback and it has never been merged, allthought I pinged it >a few times. > >See https://lkml.org/lkml/2014/4/18/276 Thanks a lot for pointing to this patch. Herbert, do you see a problem in this patch? If no, would it be possible that you ping the VFS maintainer as I guess your word carries more weight? In any case, I will test that patch tonight. Thanks Stephan -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
