-void ocfs2_mark_inode_remotely_deleted(struct inode *inode)
-{
- struct ocfs2_inode_info *oi = OCFS2_I(inode);
-
- assert_spin_locked(&oi->ip_lock);
- /* We set the SKIP_DELETE flag on the inode so we don't try to
- * delete it in delete_inode ourselves, thus avoiding
- * unecessary lock pinging. If the other node failed to wipe
- * the inode as a result of a crash, then recovery will pick
- * up the slack. */
- oi->ip_flags |= OCFS2_INODE_DELETED|OCFS2_INODE_SKIP_DELETE;
-}
-
-static int ocfs2_process_delete_request(struct inode *inode,
- int *orphaned_slot)
-{
- int response = OCFS2_RESPONSE_BUSY;
-
- mlog(0, "DELETE vote on inode %lu, read lnk_cnt = %u, slot = %d\n",
- inode->i_ino, inode->i_nlink, *orphaned_slot);
-
- spin_lock(&OCFS2_I(inode)->ip_lock);
-
- /* Whatever our vote response is, we want to make sure that
- * the orphaned slot is recorded properly on this node *and*
- * on the requesting node. Technically, if the requesting node
- * did not know which slot the inode is orphaned in but we
- * respond with BUSY he doesn't actually need the orphaned
- * slot, but it doesn't hurt to do it here anyway. */
- if ((*orphaned_slot) != OCFS2_INVALID_SLOT) {
- mlog_bug_on_msg(OCFS2_I(inode)->ip_orphaned_slot !=
- OCFS2_INVALID_SLOT &&
- OCFS2_I(inode)->ip_orphaned_slot !=
- (*orphaned_slot),
- "Inode %llu: This node thinks it's "
- "orphaned in slot %d, messaged it's in %d\n",
- (unsigned long long)OCFS2_I(inode)->ip_blkno,
- OCFS2_I(inode)->ip_orphaned_slot,
- *orphaned_slot);
-
- mlog(0, "Setting orphaned slot for inode %llu to %d\n",
- (unsigned long long)OCFS2_I(inode)->ip_blkno,
- *orphaned_slot);
-
- OCFS2_I(inode)->ip_orphaned_slot = *orphaned_slot;
- } else {
- mlog(0, "Sending back orphaned slot %d for inode %llu\n",
- OCFS2_I(inode)->ip_orphaned_slot,
- (unsigned long long)OCFS2_I(inode)->ip_blkno);
-
- *orphaned_slot = OCFS2_I(inode)->ip_orphaned_slot;
- }
-
- /* vote no if the file is still open. */
- if (OCFS2_I(inode)->ip_open_count) {
- mlog(0, "open count = %u\n",
- OCFS2_I(inode)->ip_open_count);
- spin_unlock(&OCFS2_I(inode)->ip_lock);
- goto done;
- }
- spin_unlock(&OCFS2_I(inode)->ip_lock);
-
- /* directories are a bit ugly... What if someone is sitting in
- * it? We want to make sure the inode is removed completely as
- * a result of the iput in process_vote. */
- if (S_ISDIR(inode->i_mode) && (atomic_read(&inode->i_count) != 1)) {
- mlog(0, "i_count = %u\n", atomic_read(&inode->i_count));
- goto done;
- }
-
- if (filemap_fdatawrite(inode->i_mapping)) {
- mlog(ML_ERROR, "Could not sync inode %llu for delete!\n",
- (unsigned long long)OCFS2_I(inode)->ip_blkno);
- goto done;
- }
- sync_mapping_buffers(inode->i_mapping);
- truncate_inode_pages(inode->i_mapping, 0);
- ocfs2_extent_map_trunc(inode, 0);
-
- spin_lock(&OCFS2_I(inode)->ip_lock);
- /* double check open count - someone might have raced this
- * thread into ocfs2_file_open while we were writing out
- * data. If we're to allow a wipe of this inode now, we *must*
- * hold the spinlock until we've marked it. */
- if (OCFS2_I(inode)->ip_open_count) {
- mlog(0, "Raced to wipe! open count = %u\n",
- OCFS2_I(inode)->ip_open_count);
- spin_unlock(&OCFS2_I(inode)->ip_lock);
- goto done;
- }
-
- /* Mark the inode as being wiped from disk. */
- ocfs2_mark_inode_remotely_deleted(inode);
- spin_unlock(&OCFS2_I(inode)->ip_lock);
-
- /* Not sure this is necessary anymore. */
- d_prune_aliases(inode);
-
- /* If we get here, then we're voting 'yes', so commit the
- * delete on our side. */
- response = OCFS2_RESPONSE_OK;
-done:
- return response;
-}
-
-static int ocfs2_match_dentry(struct dentry *dentry,
- u64 parent_blkno,
- unsigned int namelen,
- const char *name)
-{
- struct inode *parent;
-
- if (!dentry->d_parent) {
- mlog(0, "Detached from parent.\n");
- return 0;
- }
-
- parent = dentry->d_parent->d_inode;
- /* Negative parent dentry? */
- if (!parent)
- return 0;
-
- /* Name is in a different directory. */
- if (OCFS2_I(parent)->ip_blkno != parent_blkno)
- return 0;
-
- if (dentry->d_name.len != namelen)
- return 0;
-
- /* comparison above guarantees this is safe. */
- if (memcmp(dentry->d_name.name, name, namelen))
- return 0;
-
- return 1;
-}
-
-static void ocfs2_process_dentry_request(struct inode *inode,
- int rename,
- unsigned int new_nlink,
- u64 parent_blkno,
- unsigned int namelen,
- const char *name)
-{
- struct dentry *dentry = NULL;
- struct list_head *p;
- struct ocfs2_inode_info *oi = OCFS2_I(inode);
-
- mlog(0, "parent %llu, namelen = %u, name = %.*s\n",
- (unsigned long long)parent_blkno, namelen, namelen, name);
-
- spin_lock(&dcache_lock);
-
- /* Another node is removing this name from the system. It is
- * up to us to find the corresponding dentry and if it exists,
- * unhash it from the dcache. */
- list_for_each(p, &inode->i_dentry) {
- dentry = list_entry(p, struct dentry, d_alias);
-
- if (ocfs2_match_dentry(dentry, parent_blkno, namelen, name)) {
- mlog(0, "dentry found: %.*s\n",
- dentry->d_name.len, dentry->d_name.name);
-
- dget_locked(dentry);
- break;
- }
-
- dentry = NULL;
- }
-
- spin_unlock(&dcache_lock);
-
- if (dentry) {
- d_delete(dentry);
- dput(dentry);
- }
-
- /* rename votes don't send link counts */
- if (!rename) {
- mlog(0, "new_nlink = %u\n", new_nlink);
-
- /* We don't have the proper locks here to directly
- * change i_nlink and besides, the vote is sent
- * *before* the operation so it may have failed on the
- * other node. This passes a hint to ocfs2_drop_inode
- * to force ocfs2_delete_inode, who will take the
- * proper cluster locks to sort things out. */
- if (new_nlink == 0) {
- spin_lock(&oi->ip_lock);
- oi->ip_flags |= OCFS2_INODE_MAYBE_ORPHANED;
- spin_unlock(&OCFS2_I(inode)->ip_lock);
- }
- }
-}
-