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authorTrond Myklebust <trond.myklebust@primarydata.com>2017-05-09 16:02:57 -0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2017-05-09 16:02:57 -0400
commit76b2a303384e1d6299c3a0249f0f0ce2f8f96017 (patch)
tree3fac401ef4767578191971cf6c363a8b5aaafabc
parentf4b23de3dda1536590787c9e5c3d16b8738ab108 (diff)
downloadleg-kernel-76b2a303384e1d6299c3a0249f0f0ce2f8f96017.tar.gz
pNFS/flexfiles: Always attempt to call layoutstats when flexfiles is enabled
Layoutstats is always desirable when using the flexfiles driver, so we should enable it if that driver is being loaded. It is safe to do so, because even when the mount specifies NFSv4.1, we will turn it off if the server tells us it is unsupported. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
-rw-r--r--fs/nfs/flexfilelayout/flexfilelayout.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index 4e8bf02a62f9..f5714ee01000 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -2361,10 +2361,21 @@ ff_layout_prepare_layoutstats(struct nfs42_layoutstat_args *args)
return 0;
}
+static int
+ff_layout_set_layoutdriver(struct nfs_server *server,
+ const struct nfs_fh *dummy)
+{
+#if IS_ENABLED(CONFIG_NFS_V4_2)
+ server->caps |= NFS_CAP_LAYOUTSTATS;
+#endif
+ return 0;
+}
+
static struct pnfs_layoutdriver_type flexfilelayout_type = {
.id = LAYOUT_FLEX_FILES,
.name = "LAYOUT_FLEX_FILES",
.owner = THIS_MODULE,
+ .set_layoutdriver = ff_layout_set_layoutdriver,
.alloc_layout_hdr = ff_layout_alloc_layout_hdr,
.free_layout_hdr = ff_layout_free_layout_hdr,
.alloc_lseg = ff_layout_alloc_lseg,