Hi Alan,

here is a patch that makes the different file timestamps work on
tmpfs.

Greetings
                Christoph

--- mac10/mm/shmem.c.orig       Wed Feb 14 14:39:46 2001
+++ mac10/mm/shmem.c    Wed Feb 14 15:30:09 2001
@@ -160,6 +160,7 @@
        swp_entry_t **base, **ptr, **last;
        struct shmem_inode_info * info = &inode->u.shmem_i;
 
+       inode->i_ctime = inode->i_mtime = CURRENT_TIME;
        spin_lock (&info->lock);
        index = (inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
        if (index > info->max_index)
@@ -734,6 +735,7 @@
        struct inode * inode = shmem_get_inode(dir->i_sb, mode, dev);
        int error = -ENOSPC;
 
+       dir->i_ctime = dir->i_mtime = CURRENT_TIME;
        if (inode) {
                d_instantiate(dentry, inode);
                dget(dentry); /* Extra count - pin the dentry in core */
@@ -767,6 +769,7 @@
        if (S_ISDIR(inode->i_mode))
                return -EPERM;
 
+       inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;
        inode->i_nlink++;
        atomic_inc(&inode->i_count);    /* New dentry reference */
        dget(dentry);           /* Extra pinning count for the created dentry */
@@ -809,7 +812,9 @@
 
 static int shmem_unlink(struct inode * dir, struct dentry *dentry)
 {
-       dentry->d_inode->i_nlink--;
+       struct inode *inode = dentry->d_inode;
+       inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;
+       inode->i_nlink--;
        dput(dentry);   /* Undo the count from "create" - this does all the work */
        return 0;
 }
@@ -836,10 +841,12 @@
        if (shmem_empty(new_dentry)) {
                struct inode *inode = new_dentry->d_inode;
                if (inode) {
+                       inode->i_ctime = CURRENT_TIME;
                        inode->i_nlink--;
                        dput(new_dentry);
                }
                error = 0;
+               old_dentry->d_inode->i_ctime = old_dir->i_ctime = old_dir->i_mtime = 
+CURRENT_TIME;
        }
        return error;
 }
@@ -873,6 +880,7 @@
        UnlockPage(page);
        page_cache_release(page);
        up(&inode->i_sem);
+       dir->i_ctime = dir->i_mtime = CURRENT_TIME;
        return 0;
 fail:
        up(&inode->i_sem);

-
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