void presto_read_inode(struct inode *inode)
{
struct presto_cache *cache;
cache = presto_get_cache(inode);
if ( !cache ) {
CERROR("PRESTO: BAD, BAD: cannot find cache\n");
make_bad_inode(inode);
return ;
}
filter_c2csops(cache->cache_filter)->read_inode(inode);
CDEBUG(D_INODE, "presto_read_inode: ino %ld, gid %d\n",
inode->i_ino, inode->i_gid);
presto_set_ops(inode, cache->cache_filter);
/* XXX handle special inodes here or not - probably not? */
}
void presto_put_super(struct super_block *sb)
{
struct presto_cache *cache;
struct upc_comm *psdev;
struct super_operations *sops;
struct list_head *lh;
ENTRY;
cache = presto_find_cache(sb->s_dev);
if (!cache) {
EXIT;
goto exit;
}
psdev = &upc_comms[presto_c2m(cache)];
sops = filter_c2csops(cache->cache_filter);
if (sops->put_super)
sops->put_super(sb);
/* free any remaining async upcalls when the filesystem is unmounted */
lh = psdev->uc_pending.next;
while ( lh != &psdev->uc_pending) {
struct upc_req *req;
req = list_entry(lh, struct upc_req, rq_chain);
/* assignment must be here: we are about to free &lh */
lh = lh->next;
if ( ! (req->rq_flags & REQ_ASYNC) )
continue;
list_del(&(req->rq_chain));
PRESTO_FREE(req->rq_data, req->rq_bufsize);
PRESTO_FREE(req, sizeof(struct upc_req));
}
presto_free_cache(cache);
exit:
CDEBUG(D_MALLOC, "after umount: kmem %ld, vmem %ld\n",
presto_kmemory, presto_vmemory);
MOD_DEC_USE_COUNT;
return ;
}
static void presto_put_super(struct super_block *sb)
{
struct presto_cache *cache;
struct upc_channel *channel;
struct super_operations *sops;
struct list_head *lh;
int err;
ENTRY;
cache = presto_cache_find(sb->s_dev);
if (!cache) {
EXIT;
goto exit;
}
channel = &izo_channels[presto_c2m(cache)];
sops = filter_c2csops(cache->cache_filter);
err = izo_clear_all_fsetroots(cache);
if (err) {
CERROR("%s: err %d\n", __FUNCTION__, err);
}
PRESTO_FREE(cache->cache_vfsmount, sizeof(struct vfsmount));
/* look at kill_super - fsync_super is not exported GRRR but
probably not needed */
unlock_super(sb);
shrink_dcache_parent(cache->cache_root);
dput(cache->cache_root);
//fsync_super(sb);
lock_super(sb);
if (sops->write_super)
sops->write_super(sb);
if (sops->put_super)
sops->put_super(sb);
/* free any remaining async upcalls when the filesystem is unmounted */
spin_lock(&channel->uc_lock);
lh = channel->uc_pending.next;
while ( lh != &channel->uc_pending) {
struct upc_req *req;
req = list_entry(lh, struct upc_req, rq_chain);
/* assignment must be here: we are about to free &lh */
lh = lh->next;
if ( ! (req->rq_flags & REQ_ASYNC) )
continue;
list_del(&(req->rq_chain));
PRESTO_FREE(req->rq_data, req->rq_bufsize);
PRESTO_FREE(req, sizeof(struct upc_req));
}
list_del(&cache->cache_channel_list);
spin_unlock(&channel->uc_lock);
presto_free_cache(cache);
exit:
CDEBUG(D_MALLOC, "after umount: kmem %ld, vmem %ld\n",
presto_kmemory, presto_vmemory);
MOD_DEC_USE_COUNT;
return ;
}