From 46c98c6d1bd33f8ae2c3b8f379f1629c472141e3 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 25 Nov 2016 13:24:09 -0500 Subject: [PATCH] pNFS/flexfiles: Don't attempt to send layoutstats if there are no entries If the list of mirrors is empty, then don't send an RPC call. Signed-off-by: Trond Myklebust --- fs/nfs/flexfilelayout/flexfilelayout.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c index 90462a2a9237..a6264d6836dc 100644 --- a/fs/nfs/flexfilelayout/flexfilelayout.c +++ b/fs/nfs/flexfilelayout/flexfilelayout.c @@ -2250,6 +2250,11 @@ ff_layout_prepare_layoutstats(struct nfs42_layoutstat_args *args) args->num_dev = ff_layout_mirror_prepare_stats(args, &ff_layout->generic_hdr, dev_count); spin_unlock(&args->inode->i_lock); + if (!args->num_dev) { + kfree(args->devinfo); + args->devinfo = NULL; + return -ENOENT; + } return 0; }