From 4a3e8888d7e866137287fced284b71ba152a17ad Mon Sep 17 00:00:00 2001
From: Jiffin Tony Thottan <jthottan@redhat.com>
Date: Thu, 29 Nov 2018 19:22:40 +0530
Subject: [PATCH 469/493] nfs : set ctx for every inode looked up
 nfs3_fh_resolve_inode_lookup_cbk()

The inode ctx for nfs xlator is set with help nfs_fix_generation.
But currently gnfs is crashing because inode_ctx is becoming null
nfs3_resolve_inode_hard() is used to perform a lookup on entire
path and looks like function is missing to set the ctx for inode.
This patch will set ctx for the inode which it looked on.

Upstream reference :
>url: https://review.gluster.org/#/c/glusterfs/+/21749/
>Change-Id: I464fa7f78df1bae990ebe97de8ccf6d5fb74fc9f
>fixes: bz#1651439
>Signed-off-by: Jiffin Tony Thottan <jthottan@redhat.com>

Change-Id: I464fa7f78df1bae990ebe97de8ccf6d5fb74fc9f
BUG: 1633177
Signed-off-by: Jiffin Tony Thottan <jthottan@redhat.com>
Reviewed-on: https://code.engineering.redhat.com/gerrit/158676
Tested-by: RHGS Build Bot <nigelb@redhat.com>
Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
---
 xlators/nfs/server/src/nfs3-helpers.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/xlators/nfs/server/src/nfs3-helpers.c b/xlators/nfs/server/src/nfs3-helpers.c
index 0b97709..9bc8aff 100644
--- a/xlators/nfs/server/src/nfs3-helpers.c
+++ b/xlators/nfs/server/src/nfs3-helpers.c
@@ -3660,6 +3660,12 @@ nfs3_fh_resolve_entry_lookup_cbk (call_frame_t *frame, void *cookie,
                 inode_lookup (linked_inode);
                 inode_unref (cs->resolvedloc.inode);
                 cs->resolvedloc.inode = linked_inode;
+        } else {
+        /* nfs3_fh_resolve_entry_hard() use to resolve entire path if needed.
+         * So the ctx for inode obtained from here need to set properly,
+         * otherwise it may result in a crash.
+         */
+                nfs_fix_generation(this, inode);
         }
 err:
         nfs3_call_resume (cs);
-- 
1.8.3.1