State filing may not always be included with the free federal offer, but the IRS says that over 20 states were available last year. If you qualify for a free federal return via Free File but are left hanging on a free state return, note that some states may also offer their own free ...
Step 1: Identify the IRS processing center location based on your current resident state or IRS tax return mailing address, the address based on the form, and whether your owe taxes or expect a tax refund. Step 2: If you plan to send via private service, identify the IRS center and ...
ext4_lookup()首先调用了ext4_lookup_entry,这个函数根据当前路径的dentry的d_name成员在当前目录的父目录文件(用inode表示)里查找,这个会open父目录文件会涉及到io读操作。查找到后,得到当前目录的ext4_dir_entry_2,此结构体里有当前目录的inode number,然后根据此inode number调用ext4_iget,获得这个inode number对应...
void handle_fasteoi_irq(unsigned int irq, struct irq_desc *desc) { struct irq_chip *chip = desc->irq_data.chip; raw_spin_lock(&desc->lock); if (!irq_may_run(desc)) goto out; desc->istate &= ~(IRQS_REPLAY | IRQS_WAITING); kstat_incr_irqs_this_cpu(irq, desc); /* * If i...
IS-IS Level-1 Link State Database: LSPID LSP Seq Num router-03.00-00 * 0x0000000B router-03.02-00 * 0x00000001 router-07.00-00 0x00000006 LSP Checksum 0xBDF6 0xC473 0x403A LSP Holdtime 1005 940 940 ATT/P/OL 1/0/0 0/0/0 0/0/0 Router# show clns tagSecond protocol IS-IS Rou...
interface type number Example: Router(config)# interface FastEthernet 0/2 Configures an interface type and enters interface configuration mode. Step 4 ip vrf forwarding vrf-name Example: Router(config-if)# ip vrf forwarding vrfFirst Associates a VPN routing and forwarding instance (VRF...
这样后面如果在lookup这个目录/文件时就可以根据目录/文件的hash值/name等找到对应的dentry,找到了对应的dentry后,则就知道了这个目录文件/文件的inode struct,就不用再进入文件系统层面去lookup这个目录/文件了,如果是进入到文件系统层面去lookup了,会去读目录文件lookup,而这个涉及到读IO,比较耗时。