From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Tue, 6 Dec 2016 17:00:51 +0000 (-0500)
Subject: pNFS/flexfiles: Fix ff_layout_add_ds_error_locked()
X-Git-Tag: v4.10-rc1~33^2~26
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cb067935175ca477380806dc80bf5f0bb51f6f71;p=platform%2Fkernel%2Flinux-exynos.git

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);