X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=fs%2F9p%2Fvfs_dentry.c;h=062daa6000ab55a33441b8bcac7aa4375727fe14;hb=81450b73dde07f473a4a7208b209b4c8b7251d90;hp=a6aa947de0f9b7e0c44b4eda3f6df531b2e112bb;hpb=3d5271f9883cba7b54762bc4fe027d4172f06db7;p=powerpc.git

diff --git a/fs/9p/vfs_dentry.c b/fs/9p/vfs_dentry.c
index a6aa947de0..062daa6000 100644
--- a/fs/9p/vfs_dentry.c
+++ b/fs/9p/vfs_dentry.c
@@ -7,9 +7,8 @@
  *  Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
  *
  *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -40,51 +39,21 @@
 #include "v9fs.h"
 #include "9p.h"
 #include "v9fs_vfs.h"
-#include "conv.h"
 #include "fid.h"
 
 /**
- * v9fs_dentry_validate - VFS dcache hook to validate cache
- * @dentry:  dentry that is being validated
- * @nd: path data
+ * v9fs_dentry_delete - called when dentry refcount equals 0
+ * @dentry:  dentry in question
  *
- * dcache really shouldn't be used for 9P2000 as at all due to
- * potential attached semantics to directory traversal (walk).
- *
- * FUTURE: look into how to use dcache to allow multi-stage
- * walks in Plan 9 & potential for better dcache operation which
- * would remain valid for Plan 9 semantics.  Older versions
- * had validation via stat for those interested.  However, since
- * stat has the same approximate overhead as walk there really
- * is no difference.  The only improvement would be from a
- * time-decay cache like NFS has and that undermines the
- * synchronous nature of 9P2000.
+ * By returning 1 here we should remove cacheing of unused
+ * dentry components.
  *
  */
 
-static int v9fs_dentry_validate(struct dentry *dentry, struct nameidata *nd)
+static int v9fs_dentry_delete(struct dentry *dentry)
 {
-	struct dentry *dc = current->fs->pwd;
-
-	dprintk(DEBUG_VFS, "dentry: %s (%p)\n", dentry->d_iname, dentry);
-	if (v9fs_fid_lookup(dentry)) {
-		dprintk(DEBUG_VFS, "VALID\n");
-		return 1;
-	}
-
-	while (dc != NULL) {
-		if (dc == dentry) {
-			dprintk(DEBUG_VFS, "VALID\n");
-			return 1;
-		}
-		if (dc == dc->d_parent)
-			break;
-
-		dc = dc->d_parent;
-	}
-
-	dprintk(DEBUG_VFS, "INVALID\n");
-	return 0;
+	dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
+	return 1;
 }
 
 /**
@@ -95,24 +64,22 @@ static int v9fs_dentry_validate(struct dentry *dentry, struct nameidata *nd)
 
 void v9fs_dentry_release(struct dentry *dentry)
 {
+	int err;
+
 	dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
 
 	if (dentry->d_fsdata != NULL) {
 		struct list_head *fid_list = dentry->d_fsdata;
 		struct v9fs_fid *temp = NULL;
 		struct v9fs_fid *current_fid = NULL;
-		struct v9fs_fcall *fcall = NULL;
 
 		list_for_each_entry_safe(current_fid, temp, fid_list, list) {
-			if (v9fs_t_clunk
-			    (current_fid->v9ses, current_fid->fid, &fcall))
-				dprintk(DEBUG_ERROR, "clunk failed: %s\n",
-					FCALL_ERROR(fcall));
+			err = v9fs_t_clunk(current_fid->v9ses, current_fid->fid);
 
-			v9fs_put_idpool(current_fid->fid,
-					&current_fid->v9ses->fidpool);
+			if (err < 0)
+				dprintk(DEBUG_ERROR, "clunk failed: %d name %s\n",
+					err, dentry->d_iname);
 
-			kfree(fcall);
 			v9fs_fid_destroy(current_fid);
 		}
 
@@ -121,6 +88,6 @@ void v9fs_dentry_release(struct dentry *dentry)
 }
 
 struct dentry_operations v9fs_dentry_operations = {
-	.d_revalidate = v9fs_dentry_validate,
+	.d_delete = v9fs_dentry_delete,
 	.d_release = v9fs_dentry_release,
 };