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| author | Olga Kornievskaia <kolga@netapp.com> | 2022-03-16 18:24:26 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2022-03-21 10:36:49 -0400 |
| commit | a43bf604446414103b7535f38e739b65601c4fb2 (patch) | |
| tree | cd7542ccddf44e1691a96dea6c3de9f3bd083159 /fs/nfs | |
| parent | 693486d5f8951780a9bb31f7fe935171a80010e4 (diff) | |
| download | linux-a43bf604446414103b7535f38e739b65601c4fb2.tar.gz | |
NFSv4.1 provide mount option to toggle trunking discovery
Introduce a new mount option -- trunkdiscovery,notrunkdiscovery -- to
toggle whether or not the client will engage in actively discovery
of trunking locations.
v2 make notrunkdiscovery default
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Fixes: 1976b2b31462 ("NFSv4.1 query for fs_location attr on a new file system")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/client.c | 3 | ||||
| -rw-r--r-- | fs/nfs/fs_context.c | 8 |
2 files changed, 10 insertions, 1 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c index d1f34229e11a..e828504cc396 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -857,7 +857,8 @@ static int nfs_probe_fsinfo(struct nfs_server *server, struct nfs_fh *mntfh, str } if (clp->rpc_ops->discover_trunking != NULL && - (server->caps & NFS_CAP_FS_LOCATIONS)) { + (server->caps & NFS_CAP_FS_LOCATIONS && + (server->flags & NFS_MOUNT_TRUNK_DISCOVERY))) { error = clp->rpc_ops->discover_trunking(server, mntfh); if (error < 0) return error; diff --git a/fs/nfs/fs_context.c b/fs/nfs/fs_context.c index ea17fa1f31ec..e2d59bb5e6bb 100644 --- a/fs/nfs/fs_context.c +++ b/fs/nfs/fs_context.c @@ -80,6 +80,7 @@ enum nfs_param { Opt_source, Opt_tcp, Opt_timeo, + Opt_trunkdiscovery, Opt_udp, Opt_v, Opt_vers, @@ -180,6 +181,7 @@ static const struct fs_parameter_spec nfs_fs_parameters[] = { fsparam_string("source", Opt_source), fsparam_flag ("tcp", Opt_tcp), fsparam_u32 ("timeo", Opt_timeo), + fsparam_flag_no("trunkdiscovery", Opt_trunkdiscovery), fsparam_flag ("udp", Opt_udp), fsparam_flag ("v2", Opt_v), fsparam_flag ("v3", Opt_v), @@ -529,6 +531,12 @@ static int nfs_fs_context_parse_param(struct fs_context *fc, else ctx->flags &= ~NFS_MOUNT_NOCTO; break; + case Opt_trunkdiscovery: + if (result.negated) + ctx->flags &= ~NFS_MOUNT_TRUNK_DISCOVERY; + else + ctx->flags |= NFS_MOUNT_TRUNK_DISCOVERY; + break; case Opt_ac: if (result.negated) ctx->flags |= NFS_MOUNT_NOAC; |