debugging: test for freed (0x5a) inodes

Signed-off-by: Erez Zadok <ezk@cs.sunysb.edu>

diff --git a/fs/unionfs/debug.c b/fs/unionfs/debug.c
index ba33b483f5bef966120feb3786a8aa1cb24786f5..821ef653238895961ddd356c1f262ca18cca5593 100644 (file)
--- a/fs/unionfs/debug.c
+++ b/fs/unionfs/debug.c
@@ -84,6 +84,10 @@ void __unionfs_check_inode(const struct inode *inode,
        PRINT_CALLER;
        printk(" Ci5: inode/linode=%p:%p bindex=%d istart/end=%d:%d\n",
               inode, lower_inode, bindex, istart, iend);
+      } else if ((int)lower_inode == 0x5a5a5a5a) { /* freed inode! */
+       PRINT_CALLER;
+       printk(" Ci6: inode/linode=%p:%p bindex=%d istart/end=%d:%d\n",
+              inode, lower_inode, bindex, istart, iend);
       }
     } else {   /* lower_inode == NULL */
       if (bindex >= istart && bindex <= iend) {
@@ -93,7 +97,7 @@ void __unionfs_check_inode(const struct inode *inode,
         */
        if (!(S_ISDIR(inode->i_mode) && bindex > istart && bindex < iend)) {
          PRINT_CALLER;
-         printk(" Ci6: inode/linode=%p:%p bindex=%d istart/end=%d:%d\n",
+         printk(" Ci7: inode/linode=%p:%p bindex=%d istart/end=%d:%d\n",
                 inode, lower_inode, bindex, istart, iend);
        }
       }
@@ -227,6 +231,10 @@ void __unionfs_check_dentry(const struct dentry *dentry,
        PRINT_CALLER;
        printk(" CI5: dentry/linode=%p:%p bindex=%d istart/end=%d:%d\n",
               dentry, lower_inode, bindex, istart, iend);
+      } else if ((int)lower_inode == 0x5a5a5a5a) { /* freed inode! */
+       PRINT_CALLER;
+       printk(" CI6: dentry/linode=%p:%p bindex=%d istart/end=%d:%d\n",
+              dentry, lower_inode, bindex, istart, iend);
       }
     } else {   /* lower_inode == NULL */
       if (bindex >= istart && bindex <= iend) {
@@ -236,7 +244,7 @@ void __unionfs_check_dentry(const struct dentry *dentry,
         */
        if (!(S_ISDIR(inode->i_mode) && bindex > istart && bindex < iend)) {
          PRINT_CALLER;
-         printk(" CI6: dentry/linode=%p:%p bindex=%d istart/end=%d:%d\n",
+         printk(" CI7: dentry/linode=%p:%p bindex=%d istart/end=%d:%d\n",
                 dentry, lower_inode, bindex, istart, iend);
        }
       }