source: trunk/server/common/patches/openafs-revert-d_drop-new-file.patch @ 2634

From 88f51eecfc5a5edb92b252b202c24e54298fe129 Mon Sep 17 00:00:00 2001
From: Anders Kaseorg <andersk@mit.edu>
Date: Sun, 12 Oct 2014 22:21:40 -0400
Subject: [PATCH] Revert "LINUX: Drop dentry if lookup returns new file" and
 log differences

This effectively reverts commit
81f1814b566cb3b1cda97be4c48b9788cd7addd0, and adds a warning message
whenever it would have taken effect.

Change-Id: If470195b1eeb23d33693ade8d6fc79e903663529
---
 src/afs/LINUX/osi_vnodeops.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/afs/LINUX/osi_vnodeops.c b/src/afs/LINUX/osi_vnodeops.c
index 2a8253e..e22f62a 100644
--- a/src/afs/LINUX/osi_vnodeops.c
+++ b/src/afs/LINUX/osi_vnodeops.c
@@ -1253,6 +1253,24 @@ afs_linux_dentry_revalidate(struct dentry *dp, int flags)
                     * we don't know if the name points to this file or not. */
                    force_drop = 0;
                }
+               if (force_drop && tvc && tvc != vcp &&
+                   !(dp->d_inode && S_ISREG(dp->d_inode->i_mode))) {
+                   /* workaround and logging for GCO RT 131780 */
+                   char buf[256];
+                   char *path = dentry_path_raw(dp, buf, sizeof(buf));
+                   afs_warn("afs: RT 131780: got back a different vcache for /afs%s: "
+                            "vcp: %u.%u.%u mvstat %d, tvc: %u.%u.%u mvstat %d\n",
+                            IS_ERR(path) ? "/(bad path)" : path,
+                            (unsigned)vcp->f.fid.Fid.Volume,
+                            (unsigned)vcp->f.fid.Fid.Vnode,
+                            (unsigned)vcp->f.fid.Fid.Unique,
+                            (int)vcp->mvstat,
+                            (unsigned)tvc->f.fid.Fid.Volume,
+                            (unsigned)tvc->f.fid.Fid.Vnode,
+                            (unsigned)tvc->f.fid.Fid.Unique,
+                            (int)tvc->mvstat);
+                   force_drop = 0;
+               }
                goto bad_dentry;
            }
 
-- 
2.1.2