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);