On 08/05/13 12:43, Myklebust, Trond wrote: > On Wed, 2013-05-08 at 12:39 -0400, Steve Dickson wrote: >> >> On 01/05/13 15:03, Myklebust, Trond wrote: >>>> @@ -2409,10 +2468,26 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f >>>>> server->caps |= NFS_CAP_CTIME; >>>>> if (res.attr_bitmask[1] & FATTR4_WORD1_TIME_MODIFY) >>>>> server->caps |= NFS_CAP_MTIME; >>>>> +#ifdef CONFIG_NFS_V4_SECURITY_LABEL >>>>> + if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL) >>>>> + server->caps |= NFS_CAP_SECURITY_LABEL; >>>>> +#endif >>>>> + memcpy(server->attr_bitmask_nl, res.attr_bitmask, >>>>> + sizeof(server->attr_bitmask)); >>>>> + >>>>> + if (server->caps & NFS_CAP_SECURITY_LABEL) >>>>> + server->attr_bitmask_nl[2] &= ~FATTR4_WORD2_SECURITY_LABEL; >>>>> >>>>> memcpy(server->cache_consistency_bitmask, res.attr_bitmask, sizeof(server->cache_consistency_bitmask)); >>>>> server->cache_consistency_bitmask[0] &= FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE; >>>>> - server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY; >>>>> + server->cache_consistency_bitmask[1] &= FATTR4_WORD1_TIME_METADATA | >>>>> + FATTR4_WORD1_TIME_MODIFY; >>>>> +#ifdef CONFIG_NFS_V4_SECURITY_LABEL >>>>> + server->cache_consistency_bitmask[2] &= FATTR4_WORD2_SECURITY_LABEL; >>> Why? How is the security label relevant to cache consistency? >> Its used to the set label bit in the GETATTR that goes out with ACCESS compound. > > The GETATTR that goes out with ACCESS is only there in order to get the > change attribute so that we know when to invalidate the access cache. It > is _only_ for cache consistency. > > Why do we need to fetch the label too? > I think I answer this in the other thread but in short access updates the inode and so it appears the goal is to synchronize inode updates and label updates. steved. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
