Merge branch 'layoutstats'
* layoutstats:
pnfs/flexfiles: protect ktime manipulation with mirror lock
nfs: provide pnfs_report_layoutstat when NFS42 is disabled
pnfs/flexfiles: report layoutstat regularly
nfs42: serialize LAYOUTSTATS calls of the same file
pnfs/flexfiles: encode LAYOUTSTATS flexfiles specific data
pnfs/flexfiles: add ff_layout_prepare_layoutstats
pNFS/flexfiles: track when layout is first used
pNFS/flexfiles: add layoutstats tracking
pNFS/flexfiles: Remove unused struct members user_name, group_name
pnfs: add pnfs_report_layoutstat helper function
pNFS: fill in nfs42_layoutstat_ops
NFSv.2/pnfs Add a LAYOUTSTATS rpc function
diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
index 77a2d02..f13e196 100644
--- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c
+++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
@@ -324,7 +324,8 @@
__func__, PTR_ERR(cred));
return PTR_ERR(cred);
} else {
- mirror->cred = cred;
+ if (cmpxchg(&mirror->cred, NULL, cred))
+ put_rpccred(cred);
}
}
return 0;
@@ -386,7 +387,7 @@
/* matching smp_wmb() in _nfs4_pnfs_v3/4_ds_connect */
smp_rmb();
if (ds->ds_clp)
- goto out;
+ goto out_update_creds;
flavor = nfs4_ff_layout_choose_authflavor(mirror);
@@ -430,7 +431,7 @@
}
}
}
-
+out_update_creds:
if (ff_layout_update_mirror_cred(mirror, ds))
ds = NULL;
out:
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index f58c17b..dcd39d4 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -41,6 +41,10 @@
dprintk("NFS: open file(%pd2)\n", dentry);
+ err = nfs_check_flags(openflags);
+ if (err)
+ return err;
+
if ((openflags & O_ACCMODE) == 3)
openflags--;