struct inode *get_empty_inode(void)
{
static ino_t ino = 0;
register struct inode *inode, *best;
int i;
repeat:
inode = first_inode;
best = 0;
for (inode = inode_block, i = 0; i < nr_inodes; inode++, i++) {
if (!inode->i_count && !inode->i_lock && !inode->i_dirt) {
best = inode;
break;
}
}
if (!best) {
printk("VFS: No free inodes - contact somebody other than Linus\n");
list_inode_status();
sleep_on(&inode_wait);
goto repeat;
}
/* Here we are doing the same checks again. There cannot be a significant *
* race condition here - no time has passed */
#if 0
if (inode->i_lock) {
wait_on_inode(inode);
goto repeat;
}
if (inode->i_dirt) {
write_inode(inode);
goto repeat;
}
if (inode->i_count)
goto repeat;
#endif
clear_inode(inode);
inode->i_count = inode->i_nlink = 1;
#ifdef BLOAT_FS
inode->i_version = ++event;
#endif
inode->i_sem = 0;
inode->i_ino = ++ino;
inode->i_dev = 0;
nr_free_inodes--;
if (nr_free_inodes < 0) {
printk("VFS: get_empty_inode: bad free inode count.\n");
nr_free_inodes = 0;
}
return inode;
}
static struct inode *get_empty_inode(void)
{
static ino_t ino = 0;
register struct inode *inode;
do {
inode = first_inode->i_next;
do {
if (!inode->i_count && !inode->i_dirt && !inode->i_lock) {
goto found_empty_inode;
}
} while ((inode = inode->i_next) != first_inode->i_next);
printk("VFS: No free inodes\n");
list_inode_status();
sleep_on(&inode_wait);
} while (1);
found_empty_inode:
/* Here we are doing the same checks again. There cannot be a significant *
* race condition here - no time has passed */
#if 0
if (inode->i_lock) {
wait_on_inode(inode);
goto repeat;
}
if (inode->i_dirt) {
write_inode(inode);
goto repeat;
}
if (inode->i_count)
goto repeat;
#endif
clear_inode(inode);
inode->i_count = inode->i_nlink = 1;
inode->i_uid = current->euid;
#ifdef BLOAT_FS
inode->i_version = ++event;
#endif
inode->i_ino = ++ino;
nr_free_inodes--;
if (nr_free_inodes < 0) {
printk("VFS: get_empty_inode: bad free inode count.\n");
nr_free_inodes = 0;
}
return inode;
}