pNFS/flexfiles: Fix ff_layout_add_ds_error_locked()
When we're merging an old entry into our new entry, we want to ensure that
we add the list entry in the correct place.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
index eb98395..142bfd0 100644
--- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c
+++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
@@ -254,8 +254,9 @@ ff_layout_add_ds_error_locked(struct nfs4_flexfile_layout *flo,
}
/* Entries match, so merge "err" into "dserr" */
extend_ds_error(dserr, err->offset, err->length);
- list_del(&err->list);
+ list_replace(&err->list, &dserr->list);
kfree(err);
+ return;
}
list_add_tail(&dserr->list, head);