I've seen some strange things happen USB keys connected to my laptop
since I upgraded the kernel the last time.
The system:
- Thinkpad X41 / Pentium M
- Debian/Lenny
- libc6 2.7-10
- gcc 4.2.4
The scenario:
- I insert the USB key or CF card to a USB reader
- udev mounts it for me (it's a vfat fs)
- I move a file from the key to my main ext3 disk
- the file is created on disk and all contents are copied
- the mv command never exits and cannot be killed
- after that any syscall attempting to access the USB key will lockup
Running an strace shows that the command hangs on the unlink() of the
file being moved. Here are the last two few lines...
close(4) = 0
close(3) = 0
lstat64("/", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
fstatat64(AT_FDCWD, "/media/usb0/dcim/100ncd70/20080817-175746-361.jpg", {st_mode=S_IFREG|0660, st_size=830429, ...}, AT_SYMLINK_NOFOLLOW) = 0
unlinkat(AT_FDCWD, "/media/usb0/dcim/100ncd70/20080817-175746-361.jpg", 0
I was able to bisect it to the commit 8f5934278d1d86590244c2791b28f77d67466007
which claims to "Replace BKL with superblock lock in fat/msdos/vfat".
When I run with lock debugging I get...
=============================================
[ INFO: possible recursive locking detected ]
2.6.27-rc3-bisect-00448-ga7f5aaf #16
---------------------------------------------
mv/4020 is trying to acquire lock:
(&type->s_lock_key#9){--..}, at: [<c01a90fe>] lock_super+0x1e/0x20
but task is already holding lock:
(&type->s_lock_key#9){--..}, at: [<c01a90fe>] lock_super+0x1e/0x20
other info that might help us debug this:
3 locks held by mv/4020:
#0: (&sb->s_type->i_mutex_key#9/1){--..}, at: [<c01b2336>] do_unlinkat+0x66/0x140
#1: (&sb->s_type->i_mutex_key#9){--..}, at: [<c01b0954>] vfs_unlink+0x84/0x110
#2: (&type->s_lock_key#9){--..}, at: [<c01a90fe>] lock_super+0x1e/0x20
stack backtrace:
Pid: 4020, comm: mv Not tainted 2.6.27-rc3-bisect-00448-ga7f5aaf #16
[<c014e694>] validate_chain+0x984/0xea0
[<c0108d70>] ? native_sched_clock+0x0/0xf0
[<c014ee9c>] __lock_acquire+0x2ec/0x9b0
[<c014f5cf>] lock_acquire+0x6f/0x90
[<c01a90fe>] ? lock_super+0x1e/0x20
[<c044e5fd>] mutex_lock_nested+0xad/0x300
[<c01a90fe>] ? lock_super+0x1e/0x20
[<c01a90fe>] ? lock_super+0x1e/0x20
[<c01a90fe>] lock_super+0x1e/0x20
[<f8b3a700>] fat_write_inode+0x60/0x2b0 [fat]
[<c0450878>] ? _spin_unlock_irqrestore+0x48/0x80
[<f8b3a953>] ? fat_sync_inode+0x3/0x20 [fat]
[<f8b3a962>] fat_sync_inode+0x12/0x20 [fat]
[<f8b37c7e>] fat_remove_entries+0xbe/0x120 [fat]
[<f8b422ef>] vfat_unlink+0x5f/0x90 [vfat]
[<f8b42290>] ? vfat_unlink+0x0/0x90 [vfat]
[<c01b0968>] vfs_unlink+0x98/0x110
[<c01b2400>] do_unlinkat+0x130/0x140
[<c016a8f5>] ? audit_syscall_entry+0x105/0x150
[<c01b253b>] sys_unlinkat+0x3b/0x40
[<c01040d3>] sysenter_do_call+0x12/0x3f
=======================
It looks like the call trace is:
- do_unlinkat
- vfs_unlink
- vfat_unlink
* lock_super
- fat_remove_entries
- fat_sync_inode
- fat_write_inode
* lock_super
So this code really really liked BKL because it was recursive. I am
testing a naive patch to address this problem and will follow up on it
in a bit.
Below is some more debug info that I've collected if it helps.
Here is the bad commit:
8f5934278d1d86590244c2791b28f77d67466007 is first bad commit
commit 8f5934278d1d86590244c2791b28f77d67466007
Author: Linus Torvalds <[email protected]>
Date: Mon May 19 19:53:01 2008 -0700
Replace BKL with superblock lock in fat/msdos/vfat
This replaces the use of the BKL in the FAT family of filesystems with the
existing superblock lock instead.
The code already appears to do mostly proper locking with its own private
spinlocks (and mutexes), but while the BKL could possibly have been
dropped entirely, converting it to use the superblock lock (which is just
a regular mutex) is the conservative thing to do.
As a per-filesystem mutex, it not only won't have any of the possible
latency issues related to the BKL, but the lock is obviously private to
the particular filesystem instance and will thus not cause problems for
entirely unrelated users like the BKL can.
Signed-off-by: Linus Torvalds <[email protected]>
Cc: OGAWA Hirofumi <[email protected]>
Signed-off-by: Jonathan Corbet <[email protected]>
:040000 040000 8b8d1a0d574e953de4be1462ddcd228781371528 aef9012aa95032bc6f8e45365c8052c2ab5096f3 M fs
Here is the bisect log:
git-bisect start
# bad: [a7f5aaf36ded825477c4d7167cc6eb1bcdc63191] Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
git-bisect bad a7f5aaf36ded825477c4d7167cc6eb1bcdc63191
# good: [bce7f793daec3e65ec5c5705d2457b81fe7b5725] Linux 2.6.26
git-bisect good bce7f793daec3e65ec5c5705d2457b81fe7b5725
# bad: [6e86841d05f371b5b9b86ce76c02aaee83352298] Linux 2.6.27-rc1
git-bisect bad 6e86841d05f371b5b9b86ce76c02aaee83352298
# bad: [d20b27478d6ccf7c4c8de4f09db2bdbaec82a6c0] V4L/DVB (8415): gspca: Infinite loop in i2c_w() of etoms.
git-bisect bad d20b27478d6ccf7c4c8de4f09db2bdbaec82a6c0
# bad: [666484f0250db2e016948d63b3ef33e202e3b8d0] Merge branch 'core/softirq' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
git-bisect bad 666484f0250db2e016948d63b3ef33e202e3b8d0
# good: [d59fdcf2ac501de99c3dfb452af5e254d4342886] Merge commit 'v2.6.26' into x86/core
git-bisect good d59fdcf2ac501de99c3dfb452af5e254d4342886
# good: [a3da5bf84a97d48cfaf66c6842470fc403da5121] Merge branch 'x86/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
git-bisect good a3da5bf84a97d48cfaf66c6842470fc403da5121
# good: [6712e299b7dc78aa4971b85e803435ee6d49a9dd] Merge branch 'tracing/ftrace' into auto-ftrace-next
git-bisect good 6712e299b7dc78aa4971b85e803435ee6d49a9dd
# bad: [b7e3e1fbf69d1b6abfd337460ea17d7230e3a6e5] mpt: fasync BKL pushdown
git-bisect bad b7e3e1fbf69d1b6abfd337460ea17d7230e3a6e5
# bad: [2861ead38b8a376888c3f63b9c8e45d4cee02117] apm-emulation: BKL pushdown
git-bisect bad 2861ead38b8a376888c3f63b9c8e45d4cee02117
# good: [20613f24bcd1cbfb08e64f0bb00c44481313b448] usbcore: cdev lock_kernel() pushdown
git-bisect good 20613f24bcd1cbfb08e64f0bb00c44481313b448
# good: [dea3f665d6fa263a9870a54e9f8cfd146016f140] dpt_i20: BKL pushdown
git-bisect good dea3f665d6fa263a9870a54e9f8cfd146016f140
# good: [6606470dd1d628878383c96d10b52a77986ddac7] videodev: BKL pushdown
git-bisect good 6606470dd1d628878383c96d10b52a77986ddac7
# good: [9514dff918b947ae43b66517dc90d0e05548bd6a] Remove the lock_kernel() call from chrdev_open()
git-bisect good 9514dff918b947ae43b66517dc90d0e05548bd6a
# bad: [8f5934278d1d86590244c2791b28f77d67466007] Replace BKL with superblock lock in fat/msdos/vfat
git-bisect bad 8f5934278d1d86590244c2791b28f77d67466007
# good: [5ca6a93d802a9d110127556e5d3ed032fd273e03] bkl-removal viotape fixup
git-bisect good 5ca6a93d802a9d110127556e5d3ed032fd273e03
# bad: [8f5934278d1d86590244c2791b28f77d67466007] Replace BKL with superblock lock in fat/msdos/vfat
git-bisect bad 8f5934278d1d86590244c2791b28f77d67466007
And lastly here is my config (w/o the comments)...
CONFIG_X86_32=y
CONFIG_X86=y
CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig"
CONFIG_GENERIC_TIME=y
CONFIG_GENERIC_CMOS_UPDATE=y
CONFIG_CLOCKSOURCE_WATCHDOG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_LOCKDEP_SUPPORT=y
CONFIG_STACKTRACE_SUPPORT=y
CONFIG_HAVE_LATENCYTOP_SUPPORT=y
CONFIG_FAST_CMPXCHG_LOCAL=y
CONFIG_MMU=y
CONFIG_ZONE_DMA=y
CONFIG_GENERIC_ISA_DMA=y
CONFIG_GENERIC_IOMAP=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_HWEIGHT=y
CONFIG_GENERIC_GPIO=y
CONFIG_ARCH_MAY_HAVE_PC_FDC=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_ARCH_HAS_CPU_IDLE_WAIT=y
CONFIG_GENERIC_CALIBRATE_DELAY=y
CONFIG_ARCH_HAS_CPU_RELAX=y
CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_POPULATES_NODE_MAP=y
CONFIG_ARCH_SUPPORTS_AOUT=y
CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_X86_BIOS_REBOOT=y
CONFIG_KTIME_SCALAR=y
CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
CONFIG_EXPERIMENTAL=y
CONFIG_BROKEN_ON_SMP=y
CONFIG_LOCK_KERNEL=y
CONFIG_INIT_ENV_ARG_LIMIT=32
CONFIG_LOCALVERSION="-bisect"
CONFIG_LOCALVERSION_AUTO=y
CONFIG_SWAP=y
CONFIG_SYSVIPC=y
CONFIG_SYSVIPC_SYSCTL=y
CONFIG_POSIX_MQUEUE=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_BSD_PROCESS_ACCT_V3=y
CONFIG_TASKSTATS=y
CONFIG_TASK_DELAY_ACCT=y
CONFIG_TASK_XACCT=y
CONFIG_TASK_IO_ACCOUNTING=y
CONFIG_AUDIT=y
CONFIG_AUDITSYSCALL=y
CONFIG_AUDIT_TREE=y
CONFIG_IKCONFIG=y
CONFIG_IKCONFIG_PROC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_CGROUPS=y
CONFIG_CGROUP_NS=y
CONFIG_CGROUP_DEVICE=y
CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y
CONFIG_GROUP_SCHED=y
CONFIG_FAIR_GROUP_SCHED=y
CONFIG_RT_GROUP_SCHED=y
CONFIG_USER_SCHED=y
CONFIG_CGROUP_CPUACCT=y
CONFIG_RESOURCE_COUNTERS=y
CONFIG_MM_OWNER=y
CONFIG_CGROUP_MEM_RES_CTLR=y
CONFIG_RELAY=y
CONFIG_NAMESPACES=y
CONFIG_UTS_NS=y
CONFIG_IPC_NS=y
CONFIG_USER_NS=y
CONFIG_PID_NS=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_SYSCTL=y
CONFIG_EMBEDDED=y
CONFIG_UID16=y
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_HOTPLUG=y
CONFIG_PRINTK=y
CONFIG_BUG=y
CONFIG_ELF_CORE=y
CONFIG_BASE_FULL=y
CONFIG_FUTEX=y
CONFIG_ANON_INODES=y
CONFIG_EPOLL=y
CONFIG_SIGNALFD=y
CONFIG_TIMERFD=y
CONFIG_EVENTFD=y
CONFIG_SHMEM=y
CONFIG_VM_EVENT_COUNTERS=y
CONFIG_SLUB_DEBUG=y
CONFIG_SLUB=y
CONFIG_PROFILING=y
CONFIG_MARKERS=y
CONFIG_OPROFILE=m
CONFIG_HAVE_OPROFILE=y
CONFIG_KPROBES=y
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_KRETPROBES=y
CONFIG_HAVE_IOREMAP_PROT=y
CONFIG_HAVE_KPROBES=y
CONFIG_HAVE_KRETPROBES=y
CONFIG_PROC_PAGE_MONITOR=y
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_SLABINFO=y
CONFIG_RT_MUTEXES=y
CONFIG_BASE_SMALL=0
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_MODULE_FORCE_UNLOAD=y
CONFIG_MODVERSIONS=y
CONFIG_KMOD=y
CONFIG_BLOCK=y
CONFIG_LBD=y
CONFIG_BLK_DEV_BSG=y
CONFIG_BLK_DEV_INTEGRITY=y
CONFIG_IOSCHED_NOOP=y
CONFIG_IOSCHED_AS=y
CONFIG_IOSCHED_DEADLINE=y
CONFIG_IOSCHED_CFQ=y
CONFIG_DEFAULT_AS=y
CONFIG_DEFAULT_IOSCHED="anticipatory"
CONFIG_CLASSIC_RCU=y
CONFIG_TICK_ONESHOT=y
CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_X86_FIND_SMP_CONFIG=y
CONFIG_X86_MPPARSE=y
CONFIG_X86_PC=y
CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
CONFIG_PARAVIRT_GUEST=y
CONFIG_XEN_SAVE_RESTORE=y
CONFIG_LGUEST_GUEST=y
CONFIG_PARAVIRT=y
CONFIG_PARAVIRT_DEBUG=y
CONFIG_MEMTEST=y
CONFIG_MPENTIUMM=y
CONFIG_X86_CPU=y
CONFIG_X86_CMPXCHG=y
CONFIG_X86_L1_CACHE_SHIFT=6
CONFIG_X86_XADD=y
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
CONFIG_X86_INTEL_USERCOPY=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
CONFIG_X86_P6_NOP=y
CONFIG_X86_TSC=y
CONFIG_X86_CMOV=y
CONFIG_X86_MINIMUM_CPU_FAMILY=6
CONFIG_X86_DEBUGCTLMSR=y
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
CONFIG_DMI=y
CONFIG_PREEMPT=y
CONFIG_X86_UP_APIC=y
CONFIG_X86_UP_IOAPIC=y
CONFIG_X86_LOCAL_APIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_MCE=y
CONFIG_X86_MCE_NONFATAL=m
CONFIG_X86_MCE_P4THERMAL=y
CONFIG_VM86=y
CONFIG_MICROCODE=m
CONFIG_MICROCODE_OLD_INTERFACE=y
CONFIG_X86_MSR=m
CONFIG_X86_CPUID=m
CONFIG_HIGHMEM4G=y
CONFIG_VMSPLIT_3G=y
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_HIGHMEM=y
CONFIG_ARCH_FLATMEM_ENABLE=y
CONFIG_ARCH_SPARSEMEM_ENABLE=y
CONFIG_ARCH_SELECT_MEMORY_MODEL=y
CONFIG_SELECT_MEMORY_MODEL=y
CONFIG_FLATMEM_MANUAL=y
CONFIG_FLATMEM=y
CONFIG_FLAT_NODE_MEM_MAP=y
CONFIG_SPARSEMEM_STATIC=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_SPLIT_PTLOCK_CPUS=4
CONFIG_ZONE_DMA_FLAG=1
CONFIG_BOUNCE=y
CONFIG_VIRT_TO_BUS=y
CONFIG_MTRR=y
CONFIG_SECCOMP=y
CONFIG_HZ_250=y
CONFIG_HZ=250
CONFIG_SCHED_HRTICK=y
CONFIG_KEXEC=y
CONFIG_KEXEC_JUMP=y
CONFIG_PHYSICAL_START=0x100000
CONFIG_PHYSICAL_ALIGN=0x100000
CONFIG_COMPAT_VDSO=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
CONFIG_PM=y
CONFIG_PM_SLEEP=y
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
CONFIG_HIBERNATION=y
CONFIG_PM_STD_PARTITION="/dev/sda1"
CONFIG_ACPI=y
CONFIG_ACPI_SLEEP=y
CONFIG_ACPI_PROCFS=y
CONFIG_ACPI_PROCFS_POWER=y
CONFIG_ACPI_SYSFS_POWER=y
CONFIG_ACPI_PROC_EVENT=y
CONFIG_ACPI_AC=y
CONFIG_ACPI_BATTERY=y
CONFIG_ACPI_BUTTON=y
CONFIG_ACPI_VIDEO=m
CONFIG_ACPI_FAN=y
CONFIG_ACPI_DOCK=y
CONFIG_ACPI_BAY=m
CONFIG_ACPI_PROCESSOR=y
CONFIG_ACPI_THERMAL=y
CONFIG_ACPI_WMI=m
CONFIG_ACPI_ASUS=m
CONFIG_ACPI_TOSHIBA=m
CONFIG_ACPI_BLACKLIST_YEAR=2001
CONFIG_ACPI_EC=y
CONFIG_ACPI_PCI_SLOT=m
CONFIG_ACPI_POWER=y
CONFIG_ACPI_SYSTEM=y
CONFIG_X86_PM_TIMER=y
CONFIG_ACPI_CONTAINER=m
CONFIG_ACPI_SBS=m
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_TABLE=y
CONFIG_CPU_FREQ_STAT=y
CONFIG_CPU_FREQ_STAT_DETAILS=y
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
CONFIG_X86_ACPI_CPUFREQ=y
CONFIG_X86_SPEEDSTEP_CENTRINO=y
CONFIG_X86_SPEEDSTEP_CENTRINO_TABLE=y
CONFIG_X86_SPEEDSTEP_ICH=y
CONFIG_X86_SPEEDSTEP_SMI=y
CONFIG_X86_P4_CLOCKMOD=m
CONFIG_X86_SPEEDSTEP_LIB=y
CONFIG_X86_SPEEDSTEP_RELAXED_CAP_CHECK=y
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_IDLE_GOV_MENU=y
CONFIG_PCI=y
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_MMCONFIG=y
CONFIG_PCI_DOMAINS=y
CONFIG_PCIEPORTBUS=y
CONFIG_PCIEAER=y
CONFIG_ARCH_SUPPORTS_MSI=y
CONFIG_PCI_MSI=y
CONFIG_PCI_LEGACY=y
CONFIG_HT_IRQ=y
CONFIG_ISA_DMA_API=y
CONFIG_ISA=y
CONFIG_PCCARD=m
CONFIG_PCMCIA=m
CONFIG_PCMCIA_LOAD_CIS=y
CONFIG_PCMCIA_IOCTL=y
CONFIG_CARDBUS=y
CONFIG_YENTA=m
CONFIG_YENTA_O2=y
CONFIG_YENTA_RICOH=y
CONFIG_YENTA_TI=y
CONFIG_YENTA_ENE_TUNE=y
CONFIG_YENTA_TOSHIBA=y
CONFIG_PD6729=m
CONFIG_I82092=m
CONFIG_I82365=m
CONFIG_TCIC=m
CONFIG_PCMCIA_PROBE=y
CONFIG_PCCARD_NONSTATIC=m
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_AOUT=m
CONFIG_BINFMT_MISC=m
CONFIG_NET=y
CONFIG_PACKET=m
CONFIG_PACKET_MMAP=y
CONFIG_UNIX=y
CONFIG_XFRM=y
CONFIG_XFRM_USER=m
CONFIG_XFRM_MIGRATE=y
CONFIG_XFRM_STATISTICS=y
CONFIG_XFRM_IPCOMP=y
CONFIG_NET_KEY=m
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_ASK_IP_FIB_HASH=y
CONFIG_IP_FIB_HASH=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_VERBOSE=y
CONFIG_NET_IPIP=m
CONFIG_NET_IPGRE=m
CONFIG_NET_IPGRE_BROADCAST=y
CONFIG_IP_MROUTE=y
CONFIG_IP_PIMSM_V1=y
CONFIG_IP_PIMSM_V2=y
CONFIG_SYN_COOKIES=y
CONFIG_INET_AH=y
CONFIG_INET_ESP=y
CONFIG_INET_IPCOMP=y
CONFIG_INET_XFRM_TUNNEL=y
CONFIG_INET_TUNNEL=y
CONFIG_INET_XFRM_MODE_TRANSPORT=y
CONFIG_INET_XFRM_MODE_TUNNEL=y
CONFIG_INET_XFRM_MODE_BEET=y
CONFIG_INET_LRO=y
CONFIG_INET_DIAG=m
CONFIG_INET_TCP_DIAG=m
CONFIG_TCP_CONG_CUBIC=y
CONFIG_DEFAULT_TCP_CONG="cubic"
CONFIG_IPV6=m
CONFIG_IPV6_PRIVACY=y
CONFIG_INET6_AH=m
CONFIG_INET6_ESP=m
CONFIG_INET6_IPCOMP=m
CONFIG_IPV6_MIP6=m
CONFIG_INET6_XFRM_TUNNEL=m
CONFIG_INET6_TUNNEL=m
CONFIG_INET6_XFRM_MODE_TRANSPORT=m
CONFIG_INET6_XFRM_MODE_TUNNEL=m
CONFIG_INET6_XFRM_MODE_BEET=m
CONFIG_IPV6_SIT=m
CONFIG_IPV6_NDISC_NODETYPE=y
CONFIG_IPV6_TUNNEL=m
CONFIG_NETFILTER=y
CONFIG_NETFILTER_ADVANCED=y
CONFIG_BRIDGE_NETFILTER=y
CONFIG_NETFILTER_NETLINK=m
CONFIG_NETFILTER_NETLINK_QUEUE=m
CONFIG_NETFILTER_NETLINK_LOG=m
CONFIG_NF_CONNTRACK=m
CONFIG_NF_CT_ACCT=y
CONFIG_NF_CONNTRACK_MARK=y
CONFIG_NF_CONNTRACK_EVENTS=y
CONFIG_NF_CT_PROTO_DCCP=m
CONFIG_NF_CT_PROTO_GRE=m
CONFIG_NF_CT_PROTO_SCTP=m
CONFIG_NF_CT_PROTO_UDPLITE=m
CONFIG_NF_CONNTRACK_AMANDA=m
CONFIG_NF_CONNTRACK_FTP=m
CONFIG_NF_CONNTRACK_H323=m
CONFIG_NF_CONNTRACK_IRC=m
CONFIG_NF_CONNTRACK_NETBIOS_NS=m
CONFIG_NF_CONNTRACK_PPTP=m
CONFIG_NF_CONNTRACK_SANE=m
CONFIG_NF_CONNTRACK_SIP=m
CONFIG_NF_CONNTRACK_TFTP=m
CONFIG_NF_CT_NETLINK=m
CONFIG_NETFILTER_XTABLES=y
CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
CONFIG_NETFILTER_XT_TARGET_DSCP=m
CONFIG_NETFILTER_XT_TARGET_MARK=m
CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
CONFIG_NETFILTER_XT_TARGET_NFLOG=m
CONFIG_NETFILTER_XT_TARGET_NOTRACK=m
CONFIG_NETFILTER_XT_TARGET_RATEEST=m
CONFIG_NETFILTER_XT_TARGET_TRACE=m
CONFIG_NETFILTER_XT_TARGET_TCPMSS=m
CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP=m
CONFIG_NETFILTER_XT_MATCH_COMMENT=m
CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=m
CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
CONFIG_NETFILTER_XT_MATCH_DCCP=m
CONFIG_NETFILTER_XT_MATCH_DSCP=m
CONFIG_NETFILTER_XT_MATCH_ESP=m
CONFIG_NETFILTER_XT_MATCH_HELPER=m
CONFIG_NETFILTER_XT_MATCH_IPRANGE=m
CONFIG_NETFILTER_XT_MATCH_LENGTH=m
CONFIG_NETFILTER_XT_MATCH_LIMIT=m
CONFIG_NETFILTER_XT_MATCH_MAC=m
CONFIG_NETFILTER_XT_MATCH_MARK=m
CONFIG_NETFILTER_XT_MATCH_OWNER=m
CONFIG_NETFILTER_XT_MATCH_POLICY=m
CONFIG_NETFILTER_XT_MATCH_MULTIPORT=m
CONFIG_NETFILTER_XT_MATCH_PHYSDEV=m
CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
CONFIG_NETFILTER_XT_MATCH_QUOTA=m
CONFIG_NETFILTER_XT_MATCH_RATEEST=m
CONFIG_NETFILTER_XT_MATCH_REALM=m
CONFIG_NETFILTER_XT_MATCH_SCTP=m
CONFIG_NETFILTER_XT_MATCH_STATE=m
CONFIG_NETFILTER_XT_MATCH_STATISTIC=m
CONFIG_NETFILTER_XT_MATCH_STRING=m
CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
CONFIG_NETFILTER_XT_MATCH_TIME=m
CONFIG_NETFILTER_XT_MATCH_U32=m
CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
CONFIG_NF_CONNTRACK_IPV4=m
CONFIG_NF_CONNTRACK_PROC_COMPAT=y
CONFIG_IP_NF_QUEUE=m
CONFIG_IP_NF_IPTABLES=y
CONFIG_IP_NF_MATCH_RECENT=m
CONFIG_IP_NF_MATCH_ECN=m
CONFIG_IP_NF_MATCH_AH=m
CONFIG_IP_NF_MATCH_TTL=m
CONFIG_IP_NF_MATCH_ADDRTYPE=m
CONFIG_IP_NF_FILTER=m
CONFIG_IP_NF_TARGET_REJECT=m
CONFIG_IP_NF_TARGET_LOG=m
CONFIG_IP_NF_TARGET_ULOG=m
CONFIG_NF_NAT=m
CONFIG_NF_NAT_NEEDED=y
CONFIG_IP_NF_TARGET_MASQUERADE=m
CONFIG_IP_NF_TARGET_REDIRECT=m
CONFIG_IP_NF_TARGET_NETMAP=m
CONFIG_NF_NAT_SNMP_BASIC=m
CONFIG_NF_NAT_PROTO_DCCP=m
CONFIG_NF_NAT_PROTO_GRE=m
CONFIG_NF_NAT_PROTO_UDPLITE=m
CONFIG_NF_NAT_PROTO_SCTP=m
CONFIG_NF_NAT_FTP=m
CONFIG_NF_NAT_IRC=m
CONFIG_NF_NAT_TFTP=m
CONFIG_NF_NAT_AMANDA=m
CONFIG_NF_NAT_PPTP=m
CONFIG_NF_NAT_H323=m
CONFIG_NF_NAT_SIP=m
CONFIG_IP_NF_MANGLE=m
CONFIG_IP_NF_TARGET_ECN=m
CONFIG_IP_NF_TARGET_TTL=m
CONFIG_IP_NF_TARGET_CLUSTERIP=m
CONFIG_IP_NF_RAW=m
CONFIG_IP_NF_ARPTABLES=m
CONFIG_IP_NF_ARPFILTER=m
CONFIG_IP_NF_ARP_MANGLE=m
CONFIG_NF_CONNTRACK_IPV6=m
CONFIG_IP6_NF_QUEUE=m
CONFIG_IP6_NF_IPTABLES=m
CONFIG_IP6_NF_MATCH_RT=m
CONFIG_IP6_NF_MATCH_OPTS=m
CONFIG_IP6_NF_MATCH_FRAG=m
CONFIG_IP6_NF_MATCH_HL=m
CONFIG_IP6_NF_MATCH_IPV6HEADER=m
CONFIG_IP6_NF_MATCH_AH=m
CONFIG_IP6_NF_MATCH_MH=m
CONFIG_IP6_NF_MATCH_EUI64=m
CONFIG_IP6_NF_FILTER=m
CONFIG_IP6_NF_TARGET_LOG=m
CONFIG_IP6_NF_TARGET_REJECT=m
CONFIG_IP6_NF_MANGLE=m
CONFIG_IP6_NF_TARGET_HL=m
CONFIG_IP6_NF_RAW=m
CONFIG_BRIDGE_NF_EBTABLES=m
CONFIG_BRIDGE_EBT_BROUTE=m
CONFIG_BRIDGE_EBT_T_FILTER=m
CONFIG_BRIDGE_EBT_T_NAT=m
CONFIG_BRIDGE_EBT_802_3=m
CONFIG_BRIDGE_EBT_AMONG=m
CONFIG_BRIDGE_EBT_ARP=m
CONFIG_BRIDGE_EBT_IP=m
CONFIG_BRIDGE_EBT_IP6=m
CONFIG_BRIDGE_EBT_LIMIT=m
CONFIG_BRIDGE_EBT_MARK=m
CONFIG_BRIDGE_EBT_PKTTYPE=m
CONFIG_BRIDGE_EBT_STP=m
CONFIG_BRIDGE_EBT_VLAN=m
CONFIG_BRIDGE_EBT_ARPREPLY=m
CONFIG_BRIDGE_EBT_DNAT=m
CONFIG_BRIDGE_EBT_MARK_T=m
CONFIG_BRIDGE_EBT_REDIRECT=m
CONFIG_BRIDGE_EBT_SNAT=m
CONFIG_BRIDGE_EBT_LOG=m
CONFIG_BRIDGE_EBT_ULOG=m
CONFIG_BRIDGE_EBT_NFLOG=m
CONFIG_IP_SCTP=m
CONFIG_SCTP_HMAC_MD5=y
CONFIG_STP=m
CONFIG_GARP=m
CONFIG_BRIDGE=m
CONFIG_VLAN_8021Q=m
CONFIG_VLAN_8021Q_GVRP=y
CONFIG_LLC=m
CONFIG_NET_SCHED=y
CONFIG_NET_SCH_CBQ=m
CONFIG_NET_SCH_HTB=m
CONFIG_NET_SCH_HFSC=m
CONFIG_NET_SCH_PRIO=m
CONFIG_NET_SCH_RED=m
CONFIG_NET_SCH_SFQ=m
CONFIG_NET_SCH_TEQL=m
CONFIG_NET_SCH_TBF=m
CONFIG_NET_SCH_GRED=m
CONFIG_NET_SCH_DSMARK=m
CONFIG_NET_SCH_NETEM=m
CONFIG_NET_SCH_INGRESS=m
CONFIG_NET_CLS=y
CONFIG_NET_CLS_BASIC=m
CONFIG_NET_CLS_TCINDEX=m
CONFIG_NET_CLS_ROUTE4=m
CONFIG_NET_CLS_ROUTE=y
CONFIG_NET_CLS_FW=m
CONFIG_NET_CLS_U32=m
CONFIG_CLS_U32_PERF=y
CONFIG_CLS_U32_MARK=y
CONFIG_NET_CLS_RSVP=m
CONFIG_NET_CLS_RSVP6=m
CONFIG_NET_CLS_FLOW=m
CONFIG_NET_EMATCH=y
CONFIG_NET_EMATCH_STACK=32
CONFIG_NET_EMATCH_CMP=m
CONFIG_NET_EMATCH_NBYTE=m
CONFIG_NET_EMATCH_U32=m
CONFIG_NET_EMATCH_META=m
CONFIG_NET_EMATCH_TEXT=m
CONFIG_NET_CLS_ACT=y
CONFIG_NET_ACT_POLICE=y
CONFIG_NET_ACT_GACT=m
CONFIG_GACT_PROB=y
CONFIG_NET_ACT_MIRRED=m
CONFIG_NET_ACT_IPT=m
CONFIG_NET_ACT_NAT=m
CONFIG_NET_ACT_PEDIT=m
CONFIG_NET_SCH_FIFO=y
CONFIG_NET_PKTGEN=m
CONFIG_NET_TCPPROBE=m
CONFIG_IRDA=m
CONFIG_IRLAN=m
CONFIG_IRNET=m
CONFIG_IRCOMM=m
CONFIG_IRDA_ULTRA=y
CONFIG_IRDA_CACHE_LAST_LSAP=y
CONFIG_IRDA_FAST_RR=y
CONFIG_IRDA_DEBUG=y
CONFIG_IRTTY_SIR=m
CONFIG_DONGLE=y
CONFIG_ESI_DONGLE=m
CONFIG_ACTISYS_DONGLE=m
CONFIG_TEKRAM_DONGLE=m
CONFIG_TOIM3232_DONGLE=m
CONFIG_LITELINK_DONGLE=m
CONFIG_MA600_DONGLE=m
CONFIG_GIRBIL_DONGLE=m
CONFIG_MCP2120_DONGLE=m
CONFIG_OLD_BELKIN_DONGLE=m
CONFIG_ACT200L_DONGLE=m
CONFIG_KINGSUN_DONGLE=m
CONFIG_KSDAZZLE_DONGLE=m
CONFIG_KS959_DONGLE=m
CONFIG_USB_IRDA=m
CONFIG_SIGMATEL_FIR=m
CONFIG_NSC_FIR=m
CONFIG_WINBOND_FIR=m
CONFIG_TOSHIBA_FIR=m
CONFIG_SMC_IRCC_FIR=m
CONFIG_ALI_FIR=m
CONFIG_VLSI_FIR=m
CONFIG_VIA_FIR=m
CONFIG_MCS_FIR=m
CONFIG_AF_RXRPC=m
CONFIG_RXKAD=m
CONFIG_FIB_RULES=y
CONFIG_CFG80211=m
CONFIG_NL80211=y
CONFIG_WIRELESS_EXT=y
CONFIG_WIRELESS_EXT_SYSFS=y
CONFIG_MAC80211=m
CONFIG_MAC80211_RC_PID=y
CONFIG_MAC80211_RC_DEFAULT_PID=y
CONFIG_MAC80211_RC_DEFAULT="pid"
CONFIG_MAC80211_MESH=y
CONFIG_MAC80211_LEDS=y
CONFIG_MAC80211_DEBUGFS=y
CONFIG_IEEE80211=m
CONFIG_IEEE80211_CRYPT_WEP=m
CONFIG_IEEE80211_CRYPT_CCMP=m
CONFIG_IEEE80211_CRYPT_TKIP=m
CONFIG_RFKILL=m
CONFIG_RFKILL_INPUT=m
CONFIG_RFKILL_LEDS=y
CONFIG_NET_9P=m
CONFIG_NET_9P_VIRTIO=m
CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
CONFIG_STANDALONE=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=m
CONFIG_FIRMWARE_IN_KERNEL=y
CONFIG_EXTRA_FIRMWARE=""
CONFIG_CONNECTOR=m
CONFIG_PARPORT=m
CONFIG_PARPORT_PC=m
CONFIG_PARPORT_SERIAL=m
CONFIG_PARPORT_PC_FIFO=y
CONFIG_PARPORT_PC_PCMCIA=m
CONFIG_PARPORT_1284=y
CONFIG_PARPORT_NOT_PC=y
CONFIG_PNP=y
CONFIG_ISAPNP=y
CONFIG_PNPBIOS=y
CONFIG_PNPBIOS_PROC_FS=y
CONFIG_PNPACPI=y
CONFIG_BLK_DEV=y
CONFIG_BLK_DEV_FD=m
CONFIG_BLK_DEV_LOOP=y
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_COUNT=16
CONFIG_BLK_DEV_RAM_SIZE=8192
CONFIG_CDROM_PKTCDVD=m
CONFIG_CDROM_PKTCDVD_BUFFERS=8
CONFIG_ATA_OVER_ETH=m
CONFIG_VIRTIO_BLK=m
CONFIG_MISC_DEVICES=y
CONFIG_IBM_ASM=m
CONFIG_PHANTOM=m
CONFIG_EEPROM_93CX6=m
CONFIG_TIFM_CORE=m
CONFIG_TIFM_7XX1=m
CONFIG_THINKPAD_ACPI=m
CONFIG_THINKPAD_ACPI_BAY=y
CONFIG_THINKPAD_ACPI_VIDEO=y
CONFIG_ENCLOSURE_SERVICES=m
CONFIG_HAVE_IDE=y
CONFIG_IDE=m
CONFIG_BLK_DEV_IDE=m
CONFIG_IDE_TIMINGS=y
CONFIG_IDE_ATAPI=y
CONFIG_BLK_DEV_IDEDISK=m
CONFIG_BLK_DEV_IDECS=m
CONFIG_BLK_DEV_IDECD=m
CONFIG_BLK_DEV_IDECD_VERBOSE_ERRORS=y
CONFIG_BLK_DEV_IDETAPE=m
CONFIG_BLK_DEV_IDEFLOPPY=m
CONFIG_BLK_DEV_IDESCSI=m
CONFIG_IDE_PROC_FS=y
CONFIG_IDE_GENERIC=m
CONFIG_BLK_DEV_CMD640=m
CONFIG_BLK_DEV_IDEDMA_SFF=y
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_GENERIC=m
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_BLK_DEV_AEC62XX=m
CONFIG_BLK_DEV_PIIX=m
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_SCSI=y
CONFIG_SCSI_DMA=y
CONFIG_SCSI_NETLINK=y
CONFIG_SCSI_PROC_FS=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=m
CONFIG_CHR_DEV_OSST=m
CONFIG_BLK_DEV_SR=m
CONFIG_CHR_DEV_SG=m
CONFIG_CHR_DEV_SCH=m
CONFIG_SCSI_ENCLOSURE=m
CONFIG_SCSI_MULTI_LUN=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y
CONFIG_SCSI_WAIT_SCAN=m
CONFIG_SCSI_SPI_ATTRS=m
CONFIG_SCSI_FC_ATTRS=y
CONFIG_SCSI_ISCSI_ATTRS=m
CONFIG_SCSI_SAS_ATTRS=m
CONFIG_SCSI_LOWLEVEL=y
CONFIG_SCSI_ACARD=m
CONFIG_ATA=y
CONFIG_ATA_ACPI=y
CONFIG_ATA_SFF=y
CONFIG_ATA_PIIX=y
CONFIG_PATA_ACPI=m
CONFIG_PATA_MPIIX=y
CONFIG_PATA_SCH=y
CONFIG_IEEE1394=m
CONFIG_IEEE1394_OHCI1394=m
CONFIG_IEEE1394_PCILYNX=m
CONFIG_IEEE1394_SBP2=m
CONFIG_IEEE1394_ETH1394_ROM_ENTRY=y
CONFIG_IEEE1394_ETH1394=m
CONFIG_IEEE1394_RAWIO=m
CONFIG_IEEE1394_VIDEO1394=m
CONFIG_IEEE1394_DV1394=m
CONFIG_I2O=m
CONFIG_I2O_LCT_NOTIFY_ON_CHANGES=y
CONFIG_I2O_EXT_ADAPTEC=y
CONFIG_I2O_CONFIG=m
CONFIG_I2O_CONFIG_OLD_IOCTL=y
CONFIG_I2O_BUS=m
CONFIG_I2O_BLOCK=m
CONFIG_I2O_SCSI=m
CONFIG_I2O_PROC=m
CONFIG_NETDEVICES=y
CONFIG_IFB=m
CONFIG_DUMMY=m
CONFIG_BONDING=m
CONFIG_MACVLAN=m
CONFIG_EQUALIZER=m
CONFIG_TUN=m
CONFIG_VETH=m
CONFIG_NET_SB1000=m
CONFIG_PHYLIB=y
CONFIG_MARVELL_PHY=y
CONFIG_DAVICOM_PHY=y
CONFIG_QSEMI_PHY=y
CONFIG_LXT_PHY=y
CONFIG_CICADA_PHY=y
CONFIG_VITESSE_PHY=y
CONFIG_SMSC_PHY=y
CONFIG_BROADCOM_PHY=y
CONFIG_ICPLUS_PHY=y
CONFIG_REALTEK_PHY=y
CONFIG_FIXED_PHY=y
CONFIG_MII=m
CONFIG_NETDEV_1000=y
CONFIG_E1000=m
CONFIG_E1000E=m
CONFIG_IP1000=m
CONFIG_IGB=m
CONFIG_TIGON3=y
CONFIG_BNX2=m
CONFIG_WLAN_PRE80211=y
CONFIG_STRIP=m
CONFIG_ARLAN=m
CONFIG_WAVELAN=m
CONFIG_PCMCIA_WAVELAN=m
CONFIG_PCMCIA_NETWAVE=m
CONFIG_WLAN_80211=y
CONFIG_PCMCIA_RAYCS=m
CONFIG_IPW2100=m
CONFIG_IPW2100_MONITOR=y
CONFIG_IPW2200=m
CONFIG_IPW2200_MONITOR=y
CONFIG_IPW2200_RADIOTAP=y
CONFIG_IPW2200_PROMISCUOUS=y
CONFIG_IPW2200_QOS=y
CONFIG_LIBERTAS=m
CONFIG_LIBERTAS_USB=m
CONFIG_LIBERTAS_CS=m
CONFIG_LIBERTAS_SDIO=m
CONFIG_AIRO=m
CONFIG_HERMES=m
CONFIG_PLX_HERMES=m
CONFIG_TMD_HERMES=m
CONFIG_NORTEL_HERMES=m
CONFIG_PCI_HERMES=m
CONFIG_PCMCIA_HERMES=m
CONFIG_PCMCIA_SPECTRUM=m
CONFIG_ATMEL=m
CONFIG_PCI_ATMEL=m
CONFIG_PCMCIA_ATMEL=m
CONFIG_AIRO_CS=m
CONFIG_PCMCIA_WL3501=m
CONFIG_PRISM54=m
CONFIG_USB_ZD1201=m
CONFIG_USB_NET_RNDIS_WLAN=m
CONFIG_RTL8180=m
CONFIG_RTL8187=m
CONFIG_ADM8211=m
CONFIG_P54_COMMON=m
CONFIG_P54_USB=m
CONFIG_P54_PCI=m
CONFIG_ATH5K=m
CONFIG_HOSTAP=m
CONFIG_HOSTAP_FIRMWARE=y
CONFIG_HOSTAP_PLX=m
CONFIG_HOSTAP_PCI=m
CONFIG_HOSTAP_CS=m
CONFIG_B43=m
CONFIG_B43_PCI_AUTOSELECT=y
CONFIG_B43_PCICORE_AUTOSELECT=y
CONFIG_B43_PCMCIA=y
CONFIG_B43_PIO=y
CONFIG_B43_LEDS=y
CONFIG_B43_RFKILL=y
CONFIG_B43LEGACY=m
CONFIG_B43LEGACY_PCI_AUTOSELECT=y
CONFIG_B43LEGACY_PCICORE_AUTOSELECT=y
CONFIG_B43LEGACY_LEDS=y
CONFIG_B43LEGACY_RFKILL=y
CONFIG_B43LEGACY_DEBUG=y
CONFIG_B43LEGACY_DMA=y
CONFIG_B43LEGACY_PIO=y
CONFIG_B43LEGACY_DMA_AND_PIO_MODE=y
CONFIG_ZD1211RW=m
CONFIG_USB_CATC=m
CONFIG_USB_KAWETH=m
CONFIG_USB_PEGASUS=m
CONFIG_USB_RTL8150=m
CONFIG_USB_USBNET=m
CONFIG_USB_NET_AX8817X=m
CONFIG_USB_NET_CDCETHER=m
CONFIG_USB_NET_DM9601=m
CONFIG_USB_NET_GL620A=m
CONFIG_USB_NET_NET1080=m
CONFIG_USB_NET_PLUSB=m
CONFIG_USB_NET_MCS7830=m
CONFIG_USB_NET_RNDIS_HOST=m
CONFIG_USB_NET_CDC_SUBSET=m
CONFIG_USB_ALI_M5632=y
CONFIG_USB_AN2720=y
CONFIG_USB_BELKIN=y
CONFIG_USB_ARMLINUX=y
CONFIG_USB_EPSON2888=y
CONFIG_USB_KC2190=y
CONFIG_USB_NET_ZAURUS=m
CONFIG_NET_PCMCIA=y
CONFIG_PCMCIA_3C589=m
CONFIG_PCMCIA_3C574=m
CONFIG_PCMCIA_FMVJ18X=m
CONFIG_PCMCIA_PCNET=m
CONFIG_PCMCIA_NMCLAN=m
CONFIG_PCMCIA_SMC91C92=m
CONFIG_PCMCIA_XIRC2PS=m
CONFIG_PCMCIA_AXNET=m
CONFIG_PPP=m
CONFIG_PPP_MULTILINK=y
CONFIG_PPP_FILTER=y
CONFIG_PPP_ASYNC=m
CONFIG_PPP_SYNC_TTY=m
CONFIG_PPP_DEFLATE=m
CONFIG_PPP_BSDCOMP=m
CONFIG_PPP_MPPE=m
CONFIG_PPPOE=m
CONFIG_PPPOL2TP=m
CONFIG_SLHC=m
CONFIG_NETCONSOLE=m
CONFIG_NETPOLL=y
CONFIG_NET_POLL_CONTROLLER=y
CONFIG_VIRTIO_NET=m
CONFIG_INPUT=y
CONFIG_INPUT_POLLDEV=m
CONFIG_INPUT_MOUSEDEV=m
CONFIG_INPUT_MOUSEDEV_PSAUX=y
CONFIG_INPUT_MOUSEDEV_SCREEN_X=1024
CONFIG_INPUT_MOUSEDEV_SCREEN_Y=768
CONFIG_INPUT_JOYDEV=m
CONFIG_INPUT_EVDEV=y
CONFIG_INPUT_EVBUG=m
CONFIG_INPUT_KEYBOARD=y
CONFIG_KEYBOARD_ATKBD=y
CONFIG_KEYBOARD_SUNKBD=m
CONFIG_KEYBOARD_LKKBD=m
CONFIG_KEYBOARD_XTKBD=m
CONFIG_KEYBOARD_NEWTON=m
CONFIG_KEYBOARD_GPIO=m
CONFIG_INPUT_MOUSE=y
CONFIG_MOUSE_PS2=m
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_MOUSE_PS2_LOGIPS2PP=y
CONFIG_MOUSE_PS2_SYNAPTICS=y
CONFIG_MOUSE_PS2_LIFEBOOK=y
CONFIG_MOUSE_PS2_TRACKPOINT=y
CONFIG_MOUSE_SERIAL=m
CONFIG_MOUSE_INPORT=m
CONFIG_MOUSE_LOGIBM=m
CONFIG_MOUSE_PC110PAD=m
CONFIG_MOUSE_VSXXXAA=m
CONFIG_MOUSE_GPIO=m
CONFIG_INPUT_JOYSTICK=y
CONFIG_JOYSTICK_ANALOG=m
CONFIG_JOYSTICK_A3D=m
CONFIG_JOYSTICK_ADI=m
CONFIG_JOYSTICK_COBRA=m
CONFIG_JOYSTICK_GF2K=m
CONFIG_JOYSTICK_GRIP=m
CONFIG_JOYSTICK_GRIP_MP=m
CONFIG_JOYSTICK_GUILLEMOT=m
CONFIG_JOYSTICK_INTERACT=m
CONFIG_JOYSTICK_SIDEWINDER=m
CONFIG_JOYSTICK_TMDC=m
CONFIG_JOYSTICK_IFORCE=m
CONFIG_JOYSTICK_IFORCE_USB=y
CONFIG_JOYSTICK_IFORCE_232=y
CONFIG_JOYSTICK_WARRIOR=m
CONFIG_JOYSTICK_MAGELLAN=m
CONFIG_JOYSTICK_SPACEORB=m
CONFIG_JOYSTICK_SPACEBALL=m
CONFIG_JOYSTICK_STINGER=m
CONFIG_JOYSTICK_TWIDJOY=m
CONFIG_JOYSTICK_DB9=m
CONFIG_JOYSTICK_GAMECON=m
CONFIG_JOYSTICK_TURBOGRAFX=m
CONFIG_JOYSTICK_JOYDUMP=m
CONFIG_INPUT_MISC=y
CONFIG_INPUT_ATI_REMOTE=m
CONFIG_INPUT_ATI_REMOTE2=m
CONFIG_INPUT_KEYSPAN_REMOTE=m
CONFIG_INPUT_POWERMATE=m
CONFIG_INPUT_YEALINK=m
CONFIG_INPUT_UINPUT=m
CONFIG_SERIO=y
CONFIG_SERIO_I8042=y
CONFIG_SERIO_SERPORT=m
CONFIG_SERIO_CT82C710=m
CONFIG_SERIO_PARKBD=m
CONFIG_SERIO_PCIPS2=m
CONFIG_SERIO_LIBPS2=y
CONFIG_SERIO_RAW=m
CONFIG_GAMEPORT=m
CONFIG_GAMEPORT_NS558=m
CONFIG_GAMEPORT_L4=m
CONFIG_GAMEPORT_EMU10K1=m
CONFIG_GAMEPORT_FM801=m
CONFIG_VT=y
CONFIG_CONSOLE_TRANSLATIONS=y
CONFIG_VT_CONSOLE=y
CONFIG_HW_CONSOLE=y
CONFIG_VT_HW_CONSOLE_BINDING=y
CONFIG_DEVKMEM=y
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_FIX_EARLYCON_MEM=y
CONFIG_SERIAL_8250_PCI=m
CONFIG_SERIAL_8250_PNP=m
CONFIG_SERIAL_8250_CS=m
CONFIG_SERIAL_8250_NR_UARTS=4
CONFIG_SERIAL_8250_RUNTIME_UARTS=4
CONFIG_SERIAL_8250_EXTENDED=y
CONFIG_SERIAL_8250_MANY_PORTS=y
CONFIG_SERIAL_8250_SHARE_IRQ=y
CONFIG_SERIAL_8250_RSA=y
CONFIG_SERIAL_CORE=y
CONFIG_SERIAL_CORE_CONSOLE=y
CONFIG_CONSOLE_POLL=y
CONFIG_UNIX98_PTYS=y
CONFIG_LEGACY_PTYS=y
CONFIG_LEGACY_PTY_COUNT=256
CONFIG_PRINTER=m
CONFIG_PPDEV=m
CONFIG_HVC_DRIVER=y
CONFIG_VIRTIO_CONSOLE=y
CONFIG_IPMI_HANDLER=m
CONFIG_IPMI_DEVICE_INTERFACE=m
CONFIG_IPMI_SI=m
CONFIG_IPMI_WATCHDOG=m
CONFIG_IPMI_POWEROFF=m
CONFIG_HW_RANDOM=y
CONFIG_HW_RANDOM_INTEL=m
CONFIG_HW_RANDOM_AMD=y
CONFIG_HW_RANDOM_GEODE=y
CONFIG_HW_RANDOM_VIA=y
CONFIG_HW_RANDOM_VIRTIO=m
CONFIG_NVRAM=m
CONFIG_DTLK=m
CONFIG_SYNCLINK_CS=m
CONFIG_MWAVE=m
CONFIG_RAW_DRIVER=m
CONFIG_MAX_RAW_DEVS=256
CONFIG_HPET=y
CONFIG_HPET_MMAP=y
CONFIG_HANGCHECK_TIMER=m
CONFIG_TCG_TPM=m
CONFIG_TCG_TIS=m
CONFIG_TCG_NSC=m
CONFIG_TCG_ATMEL=m
CONFIG_DEVPORT=y
CONFIG_I2C=y
CONFIG_I2C_BOARDINFO=y
CONFIG_I2C_CHARDEV=m
CONFIG_I2C_HELPER_AUTO=y
CONFIG_I2C_ALGOBIT=m
CONFIG_I2C_ALGOPCF=m
CONFIG_I2C_ALGOPCA=m
CONFIG_I2C_ALI1535=m
CONFIG_I2C_ALI1563=m
CONFIG_I2C_ALI15X3=m
CONFIG_I2C_AMD756=m
CONFIG_I2C_AMD756_S4882=m
CONFIG_I2C_AMD8111=m
CONFIG_I2C_I801=y
CONFIG_I2C_ISCH=m
CONFIG_I2C_PIIX4=m
CONFIG_I2C_NFORCE2=m
CONFIG_I2C_SIS5595=m
CONFIG_I2C_SIS630=m
CONFIG_I2C_SIS96X=m
CONFIG_I2C_VIA=m
CONFIG_I2C_VIAPRO=m
CONFIG_I2C_GPIO=m
CONFIG_I2C_OCORES=m
CONFIG_I2C_SIMTEC=m
CONFIG_I2C_PARPORT=m
CONFIG_I2C_PARPORT_LIGHT=m
CONFIG_I2C_TAOS_EVM=m
CONFIG_I2C_TINY_USB=m
CONFIG_I2C_VOODOO3=m
CONFIG_I2C_ELEKTOR=m
CONFIG_I2C_PCA_ISA=m
CONFIG_I2C_STUB=m
CONFIG_SCx200_ACB=m
CONFIG_AT24=m
CONFIG_SENSORS_EEPROM=m
CONFIG_SENSORS_PCF8591=m
CONFIG_TPS65010=m
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_MAX732X=m
CONFIG_GPIO_PCA953X=m
CONFIG_GPIO_PCF857X=m
CONFIG_GPIO_BT8XX=m
CONFIG_W1=m
CONFIG_W1_CON=y
CONFIG_W1_MASTER_GPIO=m
CONFIG_W1_SLAVE_THERM=m
CONFIG_W1_SLAVE_SMEM=m
CONFIG_W1_SLAVE_DS2433=m
CONFIG_POWER_SUPPLY=y
CONFIG_HWMON=y
CONFIG_HWMON_VID=m
CONFIG_SENSORS_AD7418=m
CONFIG_SENSORS_ADM1021=m
CONFIG_SENSORS_ADM1025=m
CONFIG_SENSORS_ADM1026=m
CONFIG_SENSORS_ADM1029=m
CONFIG_SENSORS_ADM1031=m
CONFIG_SENSORS_ADM9240=m
CONFIG_SENSORS_ADT7470=m
CONFIG_SENSORS_ADT7473=m
CONFIG_SENSORS_ASB100=m
CONFIG_SENSORS_ATXP1=m
CONFIG_SENSORS_DS1621=m
CONFIG_SENSORS_I5K_AMB=m
CONFIG_SENSORS_F71882FG=m
CONFIG_SENSORS_F75375S=m
CONFIG_SENSORS_FSCHER=m
CONFIG_SENSORS_FSCPOS=m
CONFIG_SENSORS_FSCHMD=m
CONFIG_SENSORS_GL518SM=m
CONFIG_SENSORS_GL520SM=m
CONFIG_SENSORS_CORETEMP=m
CONFIG_SENSORS_IBMPEX=m
CONFIG_SENSORS_IT87=m
CONFIG_SENSORS_LM63=m
CONFIG_SENSORS_LM75=m
CONFIG_SENSORS_LM77=m
CONFIG_SENSORS_LM78=m
CONFIG_SENSORS_LM80=m
CONFIG_SENSORS_LM83=m
CONFIG_SENSORS_LM85=m
CONFIG_SENSORS_LM87=m
CONFIG_SENSORS_LM90=m
CONFIG_SENSORS_LM92=m
CONFIG_SENSORS_LM93=m
CONFIG_SENSORS_MAX1619=m
CONFIG_SENSORS_MAX6650=m
CONFIG_SENSORS_PC87360=m
CONFIG_SENSORS_PC87427=m
CONFIG_SENSORS_SIS5595=m
CONFIG_SENSORS_DME1737=m
CONFIG_SENSORS_SMSC47M1=m
CONFIG_SENSORS_SMSC47B397=m
CONFIG_SENSORS_ADS7828=m
CONFIG_SENSORS_THMC50=m
CONFIG_SENSORS_VIA686A=m
CONFIG_SENSORS_VT1211=m
CONFIG_SENSORS_W83781D=m
CONFIG_SENSORS_W83792D=m
CONFIG_SENSORS_W83L785TS=m
CONFIG_SENSORS_W83L786NG=m
CONFIG_SENSORS_W83627HF=m
CONFIG_SENSORS_W83627EHF=m
CONFIG_SENSORS_HDAPS=m
CONFIG_THERMAL=y
CONFIG_THERMAL_HWMON=y
CONFIG_WATCHDOG=y
CONFIG_SOFT_WATCHDOG=m
CONFIG_ACQUIRE_WDT=m
CONFIG_ADVANTECH_WDT=m
CONFIG_ALIM1535_WDT=m
CONFIG_ALIM7101_WDT=m
CONFIG_SC520_WDT=m
CONFIG_EUROTECH_WDT=m
CONFIG_IB700_WDT=m
CONFIG_IBMASR=m
CONFIG_WAFER_WDT=m
CONFIG_I6300ESB_WDT=m
CONFIG_ITCO_WDT=m
CONFIG_ITCO_VENDOR_SUPPORT=y
CONFIG_IT8712F_WDT=m
CONFIG_HP_WATCHDOG=m
CONFIG_SC1200_WDT=m
CONFIG_60XX_WDT=m
CONFIG_SBC7240_WDT=m
CONFIG_CPU5_WDT=m
CONFIG_W83627HF_WDT=m
CONFIG_W83877F_WDT=m
CONFIG_MACHZ_WDT=m
CONFIG_PCWATCHDOG=m
CONFIG_MIXCOMWD=m
CONFIG_WDT=m
CONFIG_WDT_501=y
CONFIG_PCIPCWATCHDOG=m
CONFIG_WDTPCI=m
CONFIG_WDT_501_PCI=y
CONFIG_USBPCWATCHDOG=m
CONFIG_SSB_POSSIBLE=y
CONFIG_SSB=m
CONFIG_SSB_SPROM=y
CONFIG_SSB_BLOCKIO=y
CONFIG_SSB_PCIHOST_POSSIBLE=y
CONFIG_SSB_PCIHOST=y
CONFIG_SSB_B43_PCI_BRIDGE=y
CONFIG_SSB_PCMCIAHOST_POSSIBLE=y
CONFIG_SSB_PCMCIAHOST=y
CONFIG_SSB_DRIVER_PCICORE_POSSIBLE=y
CONFIG_SSB_DRIVER_PCICORE=y
CONFIG_MFD_SM501=m
CONFIG_AGP=y
CONFIG_AGP_INTEL=y
CONFIG_DRM=y
CONFIG_DRM_I810=y
CONFIG_DRM_I915=y
CONFIG_VGASTATE=m
CONFIG_VIDEO_OUTPUT_CONTROL=m
CONFIG_FB=m
CONFIG_FIRMWARE_EDID=y
CONFIG_FB_DDC=m
CONFIG_FB_CFB_FILLRECT=m
CONFIG_FB_CFB_COPYAREA=m
CONFIG_FB_CFB_IMAGEBLIT=m
CONFIG_FB_SVGALIB=m
CONFIG_FB_MODE_HELPERS=y
CONFIG_FB_TILEBLITTING=y
CONFIG_FB_VGA16=m
CONFIG_FB_UVESA=m
CONFIG_FB_I810=m
CONFIG_FB_I810_GTF=y
CONFIG_FB_I810_I2C=y
CONFIG_FB_LE80578=m
CONFIG_FB_CARILLO_RANCH=m
CONFIG_FB_INTEL=m
CONFIG_FB_INTEL_I2C=y
CONFIG_FB_VT8623=m
CONFIG_FB_ARK=m
CONFIG_FB_PM3=m
CONFIG_BACKLIGHT_LCD_SUPPORT=y
CONFIG_LCD_CLASS_DEVICE=m
CONFIG_LCD_PLATFORM=m
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_PROGEAR=m
CONFIG_BACKLIGHT_CARILLO_RANCH=m
CONFIG_VGA_CONSOLE=y
CONFIG_VGACON_SOFT_SCROLLBACK=y
CONFIG_VGACON_SOFT_SCROLLBACK_SIZE=64
CONFIG_VIDEO_SELECT=y
CONFIG_MDA_CONSOLE=m
CONFIG_DUMMY_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE=m
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
CONFIG_LOGO=y
CONFIG_LOGO_LINUX_MONO=y
CONFIG_LOGO_LINUX_VGA16=y
CONFIG_LOGO_LINUX_CLUT224=y
CONFIG_SOUND=y
CONFIG_SND=y
CONFIG_SND_TIMER=y
CONFIG_SND_PCM=y
CONFIG_SND_HWDEP=m
CONFIG_SND_RAWMIDI=m
CONFIG_SND_SEQUENCER=m
CONFIG_SND_SEQ_DUMMY=m
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=y
CONFIG_SND_PCM_OSS=y
CONFIG_SND_PCM_OSS_PLUGINS=y
CONFIG_SND_SEQUENCER_OSS=y
CONFIG_SND_SUPPORT_OLD_API=y
CONFIG_SND_VERBOSE_PROCFS=y
CONFIG_SND_VMASTER=y
CONFIG_SND_MPU401_UART=m
CONFIG_SND_OPL3_LIB=m
CONFIG_SND_VX_LIB=m
CONFIG_SND_AC97_CODEC=y
CONFIG_SND_DRIVERS=y
CONFIG_SND_DUMMY=m
CONFIG_SND_VIRMIDI=m
CONFIG_SND_MTPAV=m
CONFIG_SND_SERIAL_U16550=m
CONFIG_SND_MPU401=m
CONFIG_SND_AC97_POWER_SAVE=y
CONFIG_SND_AC97_POWER_SAVE_DEFAULT=0
CONFIG_SND_SB_COMMON=m
CONFIG_SND_SB16_DSP=m
CONFIG_SND_PCI=y
CONFIG_SND_ALS4000=m
CONFIG_SND_ALI5451=m
CONFIG_SND_ATIIXP=m
CONFIG_SND_ATIIXP_MODEM=m
CONFIG_SND_AU8810=m
CONFIG_SND_AU8820=m
CONFIG_SND_AU8830=m
CONFIG_SND_AZT3328=m
CONFIG_SND_BT87X=m
CONFIG_SND_CA0106=m
CONFIG_SND_CMIPCI=m
CONFIG_SND_OXYGEN_LIB=m
CONFIG_SND_OXYGEN=m
CONFIG_SND_CS4281=m
CONFIG_SND_CS46XX=m
CONFIG_SND_CS46XX_NEW_DSP=y
CONFIG_SND_CS5530=m
CONFIG_SND_EMU10K1=m
CONFIG_SND_EMU10K1X=m
CONFIG_SND_ENS1370=m
CONFIG_SND_ENS1371=m
CONFIG_SND_ES1938=m
CONFIG_SND_ES1968=m
CONFIG_SND_FM801=m
CONFIG_SND_HDA_INTEL=m
CONFIG_SND_HDA_CODEC_REALTEK=y
CONFIG_SND_HDA_CODEC_ANALOG=y
CONFIG_SND_HDA_CODEC_SIGMATEL=y
CONFIG_SND_HDA_CODEC_VIA=y
CONFIG_SND_HDA_CODEC_ATIHDMI=y
CONFIG_SND_HDA_CODEC_CONEXANT=y
CONFIG_SND_HDA_CODEC_CMEDIA=y
CONFIG_SND_HDA_CODEC_SI3054=y
CONFIG_SND_HDA_GENERIC=y
CONFIG_SND_HDSP=m
CONFIG_SND_HIFIER=m
CONFIG_SND_ICE1712=m
CONFIG_SND_ICE1724=m
CONFIG_SND_INTEL8X0=y
CONFIG_SND_INTEL8X0M=y
CONFIG_SND_KORG1212=m
CONFIG_SND_MAESTRO3=m
CONFIG_SND_MIXART=m
CONFIG_SND_NM256=m
CONFIG_SND_RME32=m
CONFIG_SND_RME96=m
CONFIG_SND_RME9652=m
CONFIG_SND_SIS7019=m
CONFIG_SND_SONICVIBES=m
CONFIG_SND_TRIDENT=m
CONFIG_SND_VIA82XX=m
CONFIG_SND_VIA82XX_MODEM=m
CONFIG_SND_VIRTUOSO=m
CONFIG_SND_VX222=m
CONFIG_SND_YMFPCI=m
CONFIG_SND_USB=y
CONFIG_SND_USB_AUDIO=m
CONFIG_SND_USB_USX2Y=m
CONFIG_SND_USB_CAIAQ=m
CONFIG_SND_SOC=m
CONFIG_AC97_BUS=y
CONFIG_HID_SUPPORT=y
CONFIG_HID=y
CONFIG_HIDRAW=y
CONFIG_USB_HID=m
CONFIG_USB_HIDDEV=y
CONFIG_USB_KBD=m
CONFIG_USB_MOUSE=m
CONFIG_USB_SUPPORT=y
CONFIG_USB_ARCH_HAS_HCD=y
CONFIG_USB_ARCH_HAS_OHCI=y
CONFIG_USB_ARCH_HAS_EHCI=y
CONFIG_USB=m
CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
CONFIG_USB_DEVICEFS=y
CONFIG_USB_DEVICE_CLASS=y
CONFIG_USB_SUSPEND=y
CONFIG_USB_MON=y
CONFIG_USB_EHCI_HCD=m
CONFIG_USB_EHCI_ROOT_HUB_TT=y
CONFIG_USB_ISP116X_HCD=m
CONFIG_USB_ISP1760_HCD=m
CONFIG_USB_OHCI_HCD=m
CONFIG_USB_OHCI_HCD_SSB=y
CONFIG_USB_OHCI_LITTLE_ENDIAN=y
CONFIG_USB_UHCI_HCD=m
CONFIG_USB_SL811_HCD=m
CONFIG_USB_SL811_CS=m
CONFIG_USB_R8A66597_HCD=m
CONFIG_USB_ACM=m
CONFIG_USB_PRINTER=m
CONFIG_USB_WDM=m
CONFIG_USB_STORAGE=m
CONFIG_USB_STORAGE_DATAFAB=y
CONFIG_USB_STORAGE_FREECOM=y
CONFIG_USB_STORAGE_ISD200=y
CONFIG_USB_STORAGE_DPCM=y
CONFIG_USB_STORAGE_USBAT=y
CONFIG_USB_STORAGE_SDDR09=y
CONFIG_USB_STORAGE_SDDR55=y
CONFIG_USB_STORAGE_JUMPSHOT=y
CONFIG_USB_STORAGE_ALAUDA=y
CONFIG_USB_STORAGE_ONETOUCH=y
CONFIG_USB_STORAGE_KARMA=y
CONFIG_USB_STORAGE_SIERRA=y
CONFIG_USB_MDC800=m
CONFIG_USB_MICROTEK=m
CONFIG_USB_USS720=m
CONFIG_USB_SERIAL=m
CONFIG_USB_EZUSB=y
CONFIG_USB_SERIAL_GENERIC=y
CONFIG_USB_SERIAL_AIRCABLE=m
CONFIG_USB_SERIAL_ARK3116=m
CONFIG_USB_SERIAL_BELKIN=m
CONFIG_USB_SERIAL_CH341=m
CONFIG_USB_SERIAL_WHITEHEAT=m
CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m
CONFIG_USB_SERIAL_CP2101=m
CONFIG_USB_SERIAL_CYPRESS_M8=m
CONFIG_USB_SERIAL_EMPEG=m
CONFIG_USB_SERIAL_FTDI_SIO=m
CONFIG_USB_SERIAL_FUNSOFT=m
CONFIG_USB_SERIAL_VISOR=m
CONFIG_USB_SERIAL_IPAQ=m
CONFIG_USB_SERIAL_IR=m
CONFIG_USB_SERIAL_EDGEPORT=m
CONFIG_USB_SERIAL_EDGEPORT_TI=m
CONFIG_USB_SERIAL_GARMIN=m
CONFIG_USB_SERIAL_IPW=m
CONFIG_USB_SERIAL_IUU=m
CONFIG_USB_SERIAL_KEYSPAN_PDA=m
CONFIG_USB_SERIAL_KEYSPAN=m
CONFIG_USB_SERIAL_KEYSPAN_MPR=y
CONFIG_USB_SERIAL_KEYSPAN_USA28=y
CONFIG_USB_SERIAL_KEYSPAN_USA28X=y
CONFIG_USB_SERIAL_KEYSPAN_USA28XA=y
CONFIG_USB_SERIAL_KEYSPAN_USA28XB=y
CONFIG_USB_SERIAL_KEYSPAN_USA19=y
CONFIG_USB_SERIAL_KEYSPAN_USA18X=y
CONFIG_USB_SERIAL_KEYSPAN_USA19W=y
CONFIG_USB_SERIAL_KEYSPAN_USA19QW=y
CONFIG_USB_SERIAL_KEYSPAN_USA19QI=y
CONFIG_USB_SERIAL_KEYSPAN_USA49W=y
CONFIG_USB_SERIAL_KEYSPAN_USA49WLC=y
CONFIG_USB_SERIAL_KLSI=m
CONFIG_USB_SERIAL_KOBIL_SCT=m
CONFIG_USB_SERIAL_MCT_U232=m
CONFIG_USB_SERIAL_MOS7720=m
CONFIG_USB_SERIAL_MOS7840=m
CONFIG_USB_SERIAL_MOTOROLA=m
CONFIG_USB_SERIAL_NAVMAN=m
CONFIG_USB_SERIAL_PL2303=m
CONFIG_USB_SERIAL_OTI6858=m
CONFIG_USB_SERIAL_SPCP8X5=m
CONFIG_USB_SERIAL_HP4X=m
CONFIG_USB_SERIAL_SAFE=m
CONFIG_USB_SERIAL_SAFE_PADDED=y
CONFIG_USB_SERIAL_SIERRAWIRELESS=m
CONFIG_USB_SERIAL_TI=m
CONFIG_USB_SERIAL_CYBERJACK=m
CONFIG_USB_SERIAL_XIRCOM=m
CONFIG_USB_SERIAL_OPTION=m
CONFIG_USB_SERIAL_OMNINET=m
CONFIG_USB_RIO500=m
CONFIG_USB_LEGOTOWER=m
CONFIG_USB_LCD=m
CONFIG_USB_BERRY_CHARGE=m
CONFIG_USB_LED=m
CONFIG_USB_CYTHERM=m
CONFIG_USB_IDMOUSE=m
CONFIG_USB_SISUSBVGA=m
CONFIG_USB_IOWARRIOR=m
CONFIG_USB_TEST=m
CONFIG_USB_GADGET=m
CONFIG_USB_GADGET_DEBUG_FS=y
CONFIG_USB_GADGET_SELECTED=y
CONFIG_USB_GADGET_NET2280=y
CONFIG_USB_NET2280=m
CONFIG_USB_GADGET_DUALSPEED=y
CONFIG_USB_ZERO=m
CONFIG_USB_ETH=m
CONFIG_USB_ETH_RNDIS=y
CONFIG_USB_GADGETFS=m
CONFIG_USB_FILE_STORAGE=m
CONFIG_USB_G_SERIAL=m
CONFIG_USB_G_PRINTER=m
CONFIG_USB_CDC_COMPOSITE=m
CONFIG_MMC=m
CONFIG_MMC_BLOCK=m
CONFIG_MMC_BLOCK_BOUNCE=y
CONFIG_MMC_SDHCI=m
CONFIG_MMC_SDHCI_PCI=m
CONFIG_MMC_WBSD=m
CONFIG_MMC_TIFM_SD=m
CONFIG_MMC_SDRICOH_CS=m
CONFIG_MEMSTICK=m
CONFIG_MEMSTICK_TIFM_MS=m
CONFIG_MEMSTICK_JMICRON_38X=m
CONFIG_NEW_LEDS=y
CONFIG_LEDS_CLASS=m
CONFIG_LEDS_PCA9532=m
CONFIG_LEDS_GPIO=m
CONFIG_LEDS_PCA955X=m
CONFIG_LEDS_TRIGGERS=y
CONFIG_LEDS_TRIGGER_TIMER=m
CONFIG_LEDS_TRIGGER_IDE_DISK=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=m
CONFIG_LEDS_TRIGGER_DEFAULT_ON=m
CONFIG_RTC_LIB=y
CONFIG_RTC_CLASS=y
CONFIG_RTC_HCTOSYS=y
CONFIG_RTC_HCTOSYS_DEVICE="rtc0"
CONFIG_RTC_INTF_SYSFS=y
CONFIG_RTC_INTF_PROC=y
CONFIG_RTC_INTF_DEV=y
CONFIG_RTC_INTF_DEV_UIE_EMUL=y
CONFIG_RTC_DRV_TEST=m
CONFIG_RTC_DRV_DS1307=m
CONFIG_RTC_DRV_DS1374=m
CONFIG_RTC_DRV_DS1672=m
CONFIG_RTC_DRV_MAX6900=m
CONFIG_RTC_DRV_RS5C372=m
CONFIG_RTC_DRV_ISL1208=m
CONFIG_RTC_DRV_X1205=m
CONFIG_RTC_DRV_PCF8563=m
CONFIG_RTC_DRV_PCF8583=m
CONFIG_RTC_DRV_M41T80=m
CONFIG_RTC_DRV_CMOS=m
CONFIG_RTC_DRV_DS1511=m
CONFIG_RTC_DRV_DS1553=m
CONFIG_RTC_DRV_DS1742=m
CONFIG_RTC_DRV_STK17TA8=m
CONFIG_RTC_DRV_M48T86=m
CONFIG_RTC_DRV_M48T59=m
CONFIG_RTC_DRV_V3020=m
CONFIG_DMADEVICES=y
CONFIG_INTEL_IOATDMA=m
CONFIG_DMA_ENGINE=y
CONFIG_NET_DMA=y
CONFIG_DCA=m
CONFIG_UIO=m
CONFIG_UIO_CIF=m
CONFIG_UIO_PDRV=m
CONFIG_UIO_SMX=m
CONFIG_EDD=m
CONFIG_FIRMWARE_MEMMAP=y
CONFIG_DMIID=y
CONFIG_EXT2_FS=m
CONFIG_EXT3_FS=y
CONFIG_EXT3_FS_XATTR=y
CONFIG_EXT3_FS_POSIX_ACL=y
CONFIG_EXT3_FS_SECURITY=y
CONFIG_JBD=y
CONFIG_FS_MBCACHE=y
CONFIG_FS_POSIX_ACL=y
CONFIG_XFS_FS=y
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
CONFIG_XFS_RT=y
CONFIG_DNOTIFY=y
CONFIG_INOTIFY=y
CONFIG_INOTIFY_USER=y
CONFIG_QUOTA=y
CONFIG_QUOTA_NETLINK_INTERFACE=y
CONFIG_PRINT_QUOTA_WARNING=y
CONFIG_QFMT_V1=m
CONFIG_QFMT_V2=m
CONFIG_QUOTACTL=y
CONFIG_AUTOFS_FS=m
CONFIG_AUTOFS4_FS=m
CONFIG_FUSE_FS=m
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_ZISOFS=y
CONFIG_UDF_FS=m
CONFIG_UDF_NLS=y
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_FAT_DEFAULT_CODEPAGE=437
CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
CONFIG_NTFS_FS=m
CONFIG_NTFS_RW=y
CONFIG_PROC_FS=y
CONFIG_PROC_KCORE=y
CONFIG_PROC_SYSCTL=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_CONFIGFS_FS=m
CONFIG_ECRYPT_FS=m
CONFIG_CRAMFS=y
CONFIG_ROMFS_FS=m
CONFIG_NETWORK_FILESYSTEMS=y
CONFIG_NFS_FS=m
CONFIG_NFS_V3=y
CONFIG_NFS_V3_ACL=y
CONFIG_NFS_V4=y
CONFIG_NFSD=m
CONFIG_NFSD_V2_ACL=y
CONFIG_NFSD_V3=y
CONFIG_NFSD_V3_ACL=y
CONFIG_NFSD_V4=y
CONFIG_LOCKD=m
CONFIG_LOCKD_V4=y
CONFIG_EXPORTFS=m
CONFIG_NFS_ACL_SUPPORT=m
CONFIG_NFS_COMMON=y
CONFIG_SUNRPC=m
CONFIG_SUNRPC_GSS=m
CONFIG_RPCSEC_GSS_KRB5=m
CONFIG_RPCSEC_GSS_SPKM3=m
CONFIG_SMB_FS=m
CONFIG_CIFS=m
CONFIG_CIFS_STATS=y
CONFIG_CIFS_STATS2=y
CONFIG_CIFS_XATTR=y
CONFIG_CIFS_POSIX=y
CONFIG_CODA_FS=m
CONFIG_9P_FS=m
CONFIG_MSDOS_PARTITION=y
CONFIG_NLS=y
CONFIG_NLS_DEFAULT="cp437"
CONFIG_NLS_CODEPAGE_437=m
CONFIG_NLS_CODEPAGE_737=m
CONFIG_NLS_CODEPAGE_775=m
CONFIG_NLS_CODEPAGE_850=m
CONFIG_NLS_CODEPAGE_852=m
CONFIG_NLS_CODEPAGE_855=m
CONFIG_NLS_CODEPAGE_857=m
CONFIG_NLS_CODEPAGE_860=m
CONFIG_NLS_CODEPAGE_861=m
CONFIG_NLS_CODEPAGE_862=m
CONFIG_NLS_CODEPAGE_863=m
CONFIG_NLS_CODEPAGE_864=m
CONFIG_NLS_CODEPAGE_865=m
CONFIG_NLS_CODEPAGE_866=m
CONFIG_NLS_CODEPAGE_869=m
CONFIG_NLS_CODEPAGE_936=m
CONFIG_NLS_CODEPAGE_950=m
CONFIG_NLS_CODEPAGE_932=m
CONFIG_NLS_CODEPAGE_949=m
CONFIG_NLS_CODEPAGE_874=m
CONFIG_NLS_ISO8859_8=m
CONFIG_NLS_CODEPAGE_1250=m
CONFIG_NLS_CODEPAGE_1251=m
CONFIG_NLS_ASCII=m
CONFIG_NLS_ISO8859_1=m
CONFIG_NLS_ISO8859_2=m
CONFIG_NLS_ISO8859_3=m
CONFIG_NLS_ISO8859_4=m
CONFIG_NLS_ISO8859_5=m
CONFIG_NLS_ISO8859_6=m
CONFIG_NLS_ISO8859_7=m
CONFIG_NLS_ISO8859_9=m
CONFIG_NLS_ISO8859_13=m
CONFIG_NLS_ISO8859_14=m
CONFIG_NLS_ISO8859_15=m
CONFIG_NLS_KOI8_R=m
CONFIG_NLS_KOI8_U=m
CONFIG_NLS_UTF8=m
CONFIG_DLM=m
CONFIG_TRACE_IRQFLAGS_SUPPORT=y
CONFIG_ENABLE_WARN_DEPRECATED=y
CONFIG_ENABLE_MUST_CHECK=y
CONFIG_FRAME_WARN=1024
CONFIG_MAGIC_SYSRQ=y
CONFIG_UNUSED_SYMBOLS=y
CONFIG_DEBUG_FS=y
CONFIG_DEBUG_KERNEL=y
CONFIG_DETECT_SOFTLOCKUP=y
CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
CONFIG_SCHED_DEBUG=y
CONFIG_SCHEDSTATS=y
CONFIG_TIMER_STATS=y
CONFIG_SLUB_STATS=y
CONFIG_DEBUG_PREEMPT=y
CONFIG_DEBUG_MUTEXES=y
CONFIG_STACKTRACE=y
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_INFO=y
CONFIG_FRAME_POINTER=y
CONFIG_LATENCYTOP=y
CONFIG_HAVE_FTRACE=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_TRACER_MAX_TRACE=y
CONFIG_TRACING=y
CONFIG_FTRACE=y
CONFIG_SYSPROF_TRACER=y
CONFIG_SCHED_TRACER=y
CONFIG_CONTEXT_SWITCH_TRACER=y
CONFIG_DYNAMIC_FTRACE=y
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_KGDB=y
CONFIG_KGDB_SERIAL_CONSOLE=m
CONFIG_X86_VERBOSE_BOOTUP=y
CONFIG_X86_PTDUMP=y
CONFIG_DOUBLEFAULT=y
CONFIG_IO_DELAY_TYPE_0X80=0
CONFIG_IO_DELAY_TYPE_0XED=1
CONFIG_IO_DELAY_TYPE_UDELAY=2
CONFIG_IO_DELAY_TYPE_NONE=3
CONFIG_IO_DELAY_0X80=y
CONFIG_DEFAULT_IO_DELAY_TYPE=0
CONFIG_KEYS=y
CONFIG_CRYPTO=y
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_BLKCIPHER=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_GF128MUL=m
CONFIG_CRYPTO_NULL=m
CONFIG_CRYPTO_CRYPTD=m
CONFIG_CRYPTO_AUTHENC=y
CONFIG_CRYPTO_TEST=m
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_CTS=m
CONFIG_CRYPTO_ECB=m
CONFIG_CRYPTO_LRW=m
CONFIG_CRYPTO_PCBC=m
CONFIG_CRYPTO_XTS=m
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_XCBC=m
CONFIG_CRYPTO_CRC32C=m
CONFIG_CRYPTO_MD4=m
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_MICHAEL_MIC=m
CONFIG_CRYPTO_RMD128=m
CONFIG_CRYPTO_RMD160=m
CONFIG_CRYPTO_RMD256=m
CONFIG_CRYPTO_RMD320=m
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA256=m
CONFIG_CRYPTO_SHA512=m
CONFIG_CRYPTO_TGR192=m
CONFIG_CRYPTO_WP512=m
CONFIG_CRYPTO_AES=m
CONFIG_CRYPTO_AES_586=m
CONFIG_CRYPTO_ANUBIS=m
CONFIG_CRYPTO_ARC4=m
CONFIG_CRYPTO_BLOWFISH=m
CONFIG_CRYPTO_CAMELLIA=m
CONFIG_CRYPTO_CAST5=m
CONFIG_CRYPTO_CAST6=m
CONFIG_CRYPTO_DES=y
CONFIG_CRYPTO_FCRYPT=m
CONFIG_CRYPTO_KHAZAD=m
CONFIG_CRYPTO_SEED=m
CONFIG_CRYPTO_SERPENT=m
CONFIG_CRYPTO_TEA=m
CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRYPTO_TWOFISH_COMMON=m
CONFIG_CRYPTO_TWOFISH_586=m
CONFIG_CRYPTO_DEFLATE=y
CONFIG_CRYPTO_HW=y
CONFIG_CRYPTO_DEV_PADLOCK=y
CONFIG_CRYPTO_DEV_PADLOCK_AES=m
CONFIG_CRYPTO_DEV_PADLOCK_SHA=m
CONFIG_CRYPTO_DEV_GEODE=m
CONFIG_HAVE_KVM=y
CONFIG_VIRTUALIZATION=y
CONFIG_LGUEST=m
CONFIG_VIRTIO=y
CONFIG_VIRTIO_RING=y
CONFIG_VIRTIO_PCI=m
CONFIG_VIRTIO_BALLOON=m
CONFIG_BITREVERSE=y
CONFIG_GENERIC_FIND_FIRST_BIT=y
CONFIG_GENERIC_FIND_NEXT_BIT=y
CONFIG_CRC_CCITT=y
CONFIG_CRC16=m
CONFIG_CRC_T10DIF=y
CONFIG_CRC_ITU_T=m
CONFIG_CRC32=y
CONFIG_CRC7=m
CONFIG_LIBCRC32C=m
CONFIG_AUDIT_GENERIC=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZLIB_DEFLATE=y
CONFIG_TEXTSEARCH=y
CONFIG_TEXTSEARCH_KMP=m
CONFIG_TEXTSEARCH_BM=m
CONFIG_TEXTSEARCH_FSM=m
CONFIG_PLIST=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y
This fixes a regression introduced when BKL was removed from the
vfat driver in commit 8f5934278d1d86590244c2791b28f77d67466007.
With vfat, the unlink syscall would result in the following call chain
that caused deadlock.
- do_unlinkat
- vfs_unlink
- vfat_unlink
* lock_super
- fat_remove_entries
- fat_sync_inode
- fat_write_inode
* lock_super
This is not the ideal fix, but it should reverse some regressions
caused by BKL removal in code that depended on BKL being recursive.
Signed-off-by: Bart Trojanowski <[email protected]>
---
fs/super.c | 20 ++++++++++++++++++--
include/linux/fs.h | 2 ++
2 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/fs/super.c b/fs/super.c
index e931ae9..8f813db 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -73,6 +73,8 @@ static struct super_block *alloc_super(struct file_system_type *type)
INIT_LIST_HEAD(&s->s_dentry_lru);
init_rwsem(&s->s_umount);
mutex_init(&s->s_lock);
+ s->s_lock_cookie = NULL;
+ s->s_lock_refcnt = 0;
lockdep_set_class(&s->s_umount, &type->s_umount_key);
/*
* The locking rules for s_lock are up to the
@@ -227,14 +229,28 @@ static int grab_super(struct super_block *s) __releases(sb_lock)
*/
void lock_super(struct super_block * sb)
{
+ if (sb->s_lock_heldby == current) {
+ sb->s_lock_refcnt ++;
+ return;
+ }
+
get_fs_excl();
mutex_lock(&sb->s_lock);
+
+ sb->s_lock_heldby = current;
+ sb->s_lock_refcnt = 1;
}
void unlock_super(struct super_block * sb)
{
- put_fs_excl();
- mutex_unlock(&sb->s_lock);
+ BUG_ON(sb->s_lock_heldby != current);
+
+ if (! -- sb->s_lock_refcnt) {
+ sb->s_lock_heldby = NULL;
+
+ put_fs_excl();
+ mutex_unlock(&sb->s_lock);
+ }
}
EXPORT_SYMBOL(lock_super);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 580b513..d88178e 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1076,6 +1076,8 @@ struct super_block {
struct dentry *s_root;
struct rw_semaphore s_umount;
struct mutex s_lock;
+ void *s_lock_heldby;
+ u32 s_lock_refcnt;
int s_count;
int s_syncing;
int s_need_sync_fs;
--
1.5.6.2.221.g3c6e79
On Tue, 19 Aug 2008, Bart Trojanowski wrote:
>
> I was able to bisect it to the commit 8f5934278d1d86590244c2791b28f77d67466007
> which claims to "Replace BKL with superblock lock in fat/msdos/vfat".
>
> When I run with lock debugging I get...
>
> =============================================
> [ INFO: possible recursive locking detected ]
> 2.6.27-rc3-bisect-00448-ga7f5aaf #16
> ---------------------------------------------
> mv/4020 is trying to acquire lock:
> (&type->s_lock_key#9){--..}, at: [<c01a90fe>] lock_super+0x1e/0x20
>
> but task is already holding lock:
> (&type->s_lock_key#9){--..}, at: [<c01a90fe>] lock_super+0x1e/0x20
Thanks for the excellent debug.
> It looks like the call trace is:
>
> - do_unlinkat
> - vfs_unlink
> - vfat_unlink
> * lock_super
> - fat_remove_entries
> - fat_sync_inode
> - fat_write_inode
> * lock_super
Very much so.
And I think you hit this issue because you probably mounted the USB stick
as a "sync" (or dirsync) mount - which is what some distros do by default,
even if it is known to cause problems for some flash cards that don't do a
good job at wear levelling.
But it's good that you did that, because all _my_ testing (which was
admittedly very deficient) had been done with a default mount without that
thing.
> So this code really really liked BKL because it was recursive.
Yeah, we had some other cases like that. It's the main source of BKL
problems by far (if it wasn't for the recursion, BKL removal would
generally be trivial).
The other example of this was 9c20616c385ebeaa30257ef5d35e8f346db4ee32,
where fat_setattr->fat_truncate caused a deadlock.
> I am testing a naive patch to address this problem and will follow up on
> it in a bit.
Thanks.
Btw, quite often, the right solution may be to remove one of the locks
entirely. FAT should actually have been largely BKL free, and my
conversion of BKL to super-lock was "overly eager" exactly because it's
easier to find deadlocks (and debug things carefully and handle them as
they pop up) than it is to find races (which are almost impossible to
debug and pinpoint).
In particular, I think fat_write_inode() really is safe. It already uses
spin_lock(&sbi->inode_hash_lock);
..
spin_unlock(&sbi->inode_hash_lock);
to protect its internal data structures, and all that [un]lock_super()
protects is really just local variables and code that is already SMP-safe
(ie "sb_bread()" certainly doesn't need locking.
So I'm pretty sure the right fix is to just remove [un]lock_super()
entirely from fat_write_inode().
Linus
On Tue, 19 Aug 2008, Bart Trojanowski wrote:
>
> This fixes a regression introduced when BKL was removed from the
> vfat driver in commit 8f5934278d1d86590244c2791b28f77d67466007.
I agree that it's going to almost certainly fix the regression, but could
you test the following patch instead as an alternative? I'd rather remove
the broken recursive lockign than introduce it as an acceptable concept.
Linus
---
fs/fat/inode.c | 10 +++-------
1 files changed, 3 insertions(+), 7 deletions(-)
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 6d266d7..80ff338 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -562,26 +562,23 @@ static int fat_write_inode(struct inode *inode, int wait)
struct buffer_head *bh;
struct msdos_dir_entry *raw_entry;
loff_t i_pos;
- int err = 0;
+ int err;
retry:
i_pos = MSDOS_I(inode)->i_pos;
if (inode->i_ino == MSDOS_ROOT_INO || !i_pos)
return 0;
- lock_super(sb);
bh = sb_bread(sb, i_pos >> sbi->dir_per_block_bits);
if (!bh) {
printk(KERN_ERR "FAT: unable to read inode block "
"for updating (i_pos %lld)\n", i_pos);
- err = -EIO;
- goto out;
+ return -EIO;
}
spin_lock(&sbi->inode_hash_lock);
if (i_pos != MSDOS_I(inode)->i_pos) {
spin_unlock(&sbi->inode_hash_lock);
brelse(bh);
- unlock_super(sb);
goto retry;
}
@@ -607,11 +604,10 @@ retry:
}
spin_unlock(&sbi->inode_hash_lock);
mark_buffer_dirty(bh);
+ err = 0;
if (wait)
err = sync_dirty_buffer(bh);
brelse(bh);
-out:
- unlock_super(sb);
return err;
}
* Linus Torvalds <[email protected]> [080819 18:19]:
> And I think you hit this issue because you probably mounted the USB stick
> as a "sync" (or dirsync) mount - which is what some distros do by default,
> even if it is known to cause problems for some flash cards that don't do a
> good job at wear levelling.
You're right. I turned on sync a while back so I could just pull the
stick out w/o the need to do a manual sync... probably not a good idea
on my part with respect to the wear of the media.
> But it's good that you did that, because all _my_ testing (which was
> admittedly very deficient) had been done with a default mount without that
> thing.
My ignorance paid off!
> Btw, quite often, the right solution may be to remove one of the locks
> entirely. FAT should actually have been largely BKL free, and my
> conversion of BKL to super-lock was "overly eager" exactly because it's
> easier to find deadlocks (and debug things carefully and handle them as
> they pop up) than it is to find races (which are almost impossible to
> debug and pinpoint).
I totally agree. After spending a couple of hours (while doing other
things) bisecting the tree, I found the commit that introduced the
regression. In contrast, I was able to find the double-lock in 5
minutes.
> In particular, I think fat_write_inode() really is safe.
I wasn't sure there.
> So I'm pretty sure the right fix is to just remove [un]lock_super()
> entirely from fat_write_inode().
Ok, I will test your patch and let you know in a few minutes.
-Bart
--
WebSig: http://www.jukie.net/~bart/sig/
On Tue, 19 Aug 2008, Bart Trojanowski wrote:
>
> Ok, I will test your patch and let you know in a few minutes.
Btw, while you're at it, can you try doing some random writes to that
thing, since the whole sync mount is quite possibly going to find a few
other cases like this.
IOW, _maybe_ you hit the only case that is ever going to be an issue for
sync mounts, and maybe you didn't. In my eternal quest to never actually
test anything myself, I'm hoping you can try some writing (and
over-writing) of files, since writes to the filesystem is where the whole
"sync" thing is going to show up (both metadata ie file creation and
removal, and "real" data ie normal write/truncate calls).
Linus
* Linus Torvalds <[email protected]> [080819 18:19]:
> And I think you hit this issue because you probably mounted the USB stick
> as a "sync" (or dirsync) mount - which is what some distros do by default,
> even if it is known to cause problems for some flash cards that don't do a
> good job at wear levelling.
Hmm... I was considering the costs and benefits of sync mounts. I don't
care about the performance hit, as I don't move that much data around.
Primarily, I like the fact that I can pull the media out w/o any special
action (which sometimes requires that I unlock my screensaver first).
But, on the other hand, it's nice to have the media last longer.
So, maybe it would be a good idea to have a 'delaysync=60' to force a
sync after 60 seconds of inactivity. Unless, there is something else
that would do that for me already.
Thoughts?
-Bart
--
WebSig: http://www.jukie.net/~bart/sig/
* Linus Torvalds <[email protected]> [080819 20:12]:
> Btw, while you're at it, can you try doing some random writes to that
> thing, since the whole sync mount is quite possibly going to find a few
> other cases like this.
My bisect test script moved files back and forth between the device and
my hard disk. If the patch works, I'll modify the script to also do
some truncate and overwrite tests, and maybe do a few things in
parallel.
> IOW, _maybe_ you hit the only case that is ever going to be an issue for
> sync mounts, and maybe you didn't. In my eternal quest to never actually
> test anything myself, I'm hoping you can try some writing (and
> over-writing) of files, since writes to the filesystem is where the whole
> "sync" thing is going to show up (both metadata ie file creation and
> removal, and "real" data ie normal write/truncate calls).
I am glad to help you in your eternal quest. :)
-Bart
--
WebSig: http://www.jukie.net/~bart/sig/
On Tue, 19 Aug 2008, Bart Trojanowski wrote:
>
> So, maybe it would be a good idea to have a 'delaysync=60' to force a
> sync after 60 seconds of inactivity. Unless, there is something else
> that would do that for me already.
Oh, it could be even shorter.
The problem with using 'sync' is that it easily ends up overwriting things
like the sector that contains a particular inode thousands of times for
even trivial operations. Or things like the file allocation table etc.
For example, something as trivial as copying a single big file, if the
copy program just copies it a few kB at a time, then a file that is a few
megabytes in size will actually end up rewriting the inode block (just
because the size grows) thousands of time.
With any kind of half-way decent wear leveling, this isn't a problem at
all, and most flash drives have that. But if they don't, then that means
that the file allocation table sectors and the inode sectors get rewritten
over and over and over again thousands of times.
Just making it do the sync once per _second_ or something like that would
already make the "thousands of times" go away. The sectors would probably
be rewritten a few times per big file, and just once per couple of tens of
files for small files being written.
So we don't even need anything like 60 seconds, we literally would just
need some trivial delays.
But no, we don't have that kind of "half-sync" behavior. Right now, it's
pretty much all or nothing. Either we're fully synchronous (and that
really is bad for crappy flash), or we end up depending on bdflush writing
things back in the background.
Of course, pdflush already syncs within 60s (in fact, 30s by default,
iirc), but then things like "laptop_mode" will actually make that
potentially much less frequent (I think the default value for that is 5
minutes).
I do think this is something we could do better, no question about it.
But I don't know exactly what the timeout should be, though (although I
suspect that it should involve _ignoring_ non-data writes like the atime
updates, and trigger a timeout on data writes so that when you actually
write a file, you'll know that the sync will happen within five seconds of
you having finished the write or whatever).
And no, no such mount option currently exists. And the pdflush things are
all global, not per-device, iirc.
Linus
On Tue, 19 Aug 2008, Linus Torvalds wrote:
>
> But I don't know exactly what the timeout should be, though (although I
> suspect that it should involve _ignoring_ non-data writes like the atime
> updates, and trigger a timeout on data writes so that when you actually
> write a file, you'll know that the sync will happen within five seconds of
> you having finished the write or whatever).
.. and by "finished the write" I mean "closed the file", not "end of
write() system call". Ie it's one of those things where it really doesn't
mostly make much sense to try to give any kinds of flush guarantees until
the user has basically shown that he's all done with writing.
If you have something like removable media, and you actually remove it
while you have a "cp -R" in progress, it damn well won't matter whether we
were synchronous or not. But if you remove it after the "cp" has actually
finished, it's a lot more understandable if somebody expects it to be on
disk.
So one thing we could perhaps consider is to make FAT in particular
consider "sync" mounts to be about open/close consistency, not about
per-write-system-call consistency. So the "close()" wouldn't return until
the file is on disk, but we wouldn't force a synchronous rewrite the inode
or the file allocation table thousands of times just because the file was
big.
FAT really is kind of different. I suspect we could just change what
"sync" means for it. But it would probably be good to have a VFS-level
notion of open-close consistency. It is, after all, what NFS is already
supposed to give you, so there is precedence for that being a useful IO
serialization model.
Al, what do you think?
Linus
* Linus Torvalds <[email protected]> [080819 18:23]:
>
>
> On Tue, 19 Aug 2008, Bart Trojanowski wrote:
> >
> > This fixes a regression introduced when BKL was removed from the
> > vfat driver in commit 8f5934278d1d86590244c2791b28f77d67466007.
>
> I agree that it's going to almost certainly fix the regression, but could
> you test the following patch instead as an alternative? I'd rather remove
> the broken recursive lockign than introduce it as an acceptable concept.
Looks good. I ran 10 parallel processes creating 1M files truncating
them, writing to them again and then deleting them. This patch fixes
the issue I ran into.
Signed-off-by: Bart Trojanowski <[email protected]>
> ---
> fs/fat/inode.c | 10 +++-------
> 1 files changed, 3 insertions(+), 7 deletions(-)
>
> diff --git a/fs/fat/inode.c b/fs/fat/inode.c
> index 6d266d7..80ff338 100644
> --- a/fs/fat/inode.c
> +++ b/fs/fat/inode.c
> @@ -562,26 +562,23 @@ static int fat_write_inode(struct inode *inode, int wait)
> struct buffer_head *bh;
> struct msdos_dir_entry *raw_entry;
> loff_t i_pos;
> - int err = 0;
> + int err;
>
> retry:
> i_pos = MSDOS_I(inode)->i_pos;
> if (inode->i_ino == MSDOS_ROOT_INO || !i_pos)
> return 0;
>
> - lock_super(sb);
> bh = sb_bread(sb, i_pos >> sbi->dir_per_block_bits);
> if (!bh) {
> printk(KERN_ERR "FAT: unable to read inode block "
> "for updating (i_pos %lld)\n", i_pos);
> - err = -EIO;
> - goto out;
> + return -EIO;
> }
> spin_lock(&sbi->inode_hash_lock);
> if (i_pos != MSDOS_I(inode)->i_pos) {
> spin_unlock(&sbi->inode_hash_lock);
> brelse(bh);
> - unlock_super(sb);
> goto retry;
> }
>
> @@ -607,11 +604,10 @@ retry:
> }
> spin_unlock(&sbi->inode_hash_lock);
> mark_buffer_dirty(bh);
> + err = 0;
> if (wait)
> err = sync_dirty_buffer(bh);
> brelse(bh);
> -out:
> - unlock_super(sb);
> return err;
> }
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
--
WebSig: http://www.jukie.net/~bart/sig/
* Linus Torvalds <[email protected]> [080819 20:56]:
> So one thing we could perhaps consider is to make FAT in particular
> consider "sync" mounts to be about open/close consistency, not about
> per-write-system-call consistency. So the "close()" wouldn't return until
> the file is on disk, but we wouldn't force a synchronous rewrite the inode
> or the file allocation table thousands of times just because the file was
> big.
I was reading the vfat code, and it turns out that vfat has a "flush"
mount option. Which is documented in the code (not in the manpage) as:
struct fat_mount_options {
...
unsigned
...
flush:1, /* write things quickly */
Since that was very informative I looked at the usage. It's used
in fat_file_release() to do almost what you describe. But it seems to
be a best effort thing. If my data doesn't hit the disk (or flash) in
HZ/10, then all bets are off.
-Bart
--
WebSig: http://www.jukie.net/~bart/sig/
El Tue, 19 Aug 2008 22:27:12 -0400, Bart Trojanowski <[email protected]> escribió:
> I was reading the vfat code, and it turns out that vfat has a "flush"
> mount option. Which is documented in the code (not in the manpage) as:
Yeah, probably the one place where it was documented was
http://kernelnewbies.org/Linux_2_6_19 (commit ae78bf9c4f5fde3c67e2829505f195d7347ce3e4).
Apparently at least one person must have read it, because there's a lot
of dmesgs in the interweb with this string in it:
"FAT: Unrecognized mount option "flush" or missing value"
due to HAL trying to mount vfat filesystems with that option in kernels
that don't support it. Which broke USB stick support for them, BTW, and
generated a lot of posts in forums asking for help.
IOW: not only this option exist, it's also being used by default in all
the vfat mounts on the linux systems that use HAL, ie. almost all of them.
While debugging a sync mount regression on vfat I noticed that there
were mount options parsed by the driver that were not documented.
Signed-off-by: Bart Trojanowski <[email protected]>
Cc: [email protected]
Cc: [email protected]
---
Documentation/filesystems/vfat.txt | 31 +++++++++++++++++++++++++++++--
1 files changed, 29 insertions(+), 2 deletions(-)
diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt
index bbac4f1..4e26744 100644
--- a/Documentation/filesystems/vfat.txt
+++ b/Documentation/filesystems/vfat.txt
@@ -8,6 +8,14 @@ if you want to format from within Linux.
VFAT MOUNT OPTIONS
----------------------------------------------------------------------
+uid=### -- Explicitly set ownership of all files on this
+ filesystem to this user ID number. Default is to use
+ the UID of the mounting process.
+
+gid=### -- Explisitly set ownership of all files on thsi
+ filesystem to this group ID number. Default is to use
+ the GID of the mounting process.
+
umask=### -- The permission mask (for files and directories, see umask(1)).
The default is the umask of current process.
@@ -36,7 +44,7 @@ codepage=### -- Sets the codepage number for converting to shortname
characters on FAT filesystem.
By default, FAT_DEFAULT_CODEPAGE setting is used.
-iocharset=name -- Character set to use for converting between the
+iocharset=<name> -- Character set to use for converting between the
encoding is used for user visible filename and 16 bit
Unicode characters. Long filenames are stored on disk
in Unicode format, but Unix for the most part doesn't
@@ -86,6 +94,10 @@ check=s|r|n -- Case sensitivity checking setting.
r: relaxed, case insensitive
n: normal, default setting, currently case insensitive
+nocase -- If set, files and directories read from device will have
+ their names converted to lowercase. Not set by
+ default.
+
shortname=lower|win95|winnt|mixed
-- Shortname display/create setting.
lower: convert to lowercase for display,
@@ -99,11 +111,26 @@ shortname=lower|win95|winnt|mixed
tz=UTC -- Interpret timestamps as UTC rather than local time.
This option disables the conversion of timestamps
between local time (as used by Windows on FAT) and UTC
- (which Linux uses internally). This is particuluarly
+ (which Linux uses internally). This is particularly
useful when mounting devices (like digital cameras)
that are set to UTC in order to avoid the pitfalls of
local time.
+showexec -- If set, files that end if .EXE, .COM, or .BAT will have
+ the execute permission bits set. Not set by default,
+ in which case all files show up with the execute bits set.
+
+debug -- Can be set, but unused by the current implementation.
+
+sys_immutable -- If set, all files on this filesystem which have the SYS
+ attribute (DOS bit) set will become IMMUTABLE (inode flag)
+ preventing write operations on these files. Not set by
+ default.
+
+flush -- If set, modified inodes will be flushed to disk on file
+ close system call. This is ideal for USB connected
+ devices. Not set by default.
+
<bool>: 0,1,yes,no,true,false
TODO
--
1.6.0.rc0.43.gb0a469
On Fri, 22 Aug 2008 20:54:19 -0400, Bart Trojanowski <[email protected]> wrote:
>While debugging a sync mount regression on vfat I noticed that there
>were mount options parsed by the driver that were not documented.
>
>Signed-off-by: Bart Trojanowski <[email protected]>
>Cc: [email protected]
>Cc: [email protected]
>---
> Documentation/filesystems/vfat.txt | 31 +++++++++++++++++++++++++++++--
> 1 files changed, 29 insertions(+), 2 deletions(-)
>
>diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt
>index bbac4f1..4e26744 100644
>--- a/Documentation/filesystems/vfat.txt
>+++ b/Documentation/filesystems/vfat.txt
>@@ -8,6 +8,14 @@ if you want to format from within Linux.
>
> VFAT MOUNT OPTIONS
> ----------------------------------------------------------------------
>+uid=### -- Explicitly set ownership of all files on this
>+ filesystem to this user ID number. Default is to use
>+ the UID of the mounting process.
>+
>+gid=### -- Explisitly set ownership of all files on thsi
^^^^
>+ filesystem to this group ID number. Default is to use
>+ the GID of the mounting process.
>+
> umask=### -- The permission mask (for files and directories, see umask(1)).
> The default is the umask of current process.
>
>@@ -36,7 +44,7 @@ codepage=### -- Sets the codepage number for converting to shortname
> characters on FAT filesystem.
> By default, FAT_DEFAULT_CODEPAGE setting is used.
>
>-iocharset=name -- Character set to use for converting between the
>+iocharset=<name> -- Character set to use for converting between the
> encoding is used for user visible filename and 16 bit
> Unicode characters. Long filenames are stored on disk
> in Unicode format, but Unix for the most part doesn't
>@@ -86,6 +94,10 @@ check=s|r|n -- Case sensitivity checking setting.
> r: relaxed, case insensitive
> n: normal, default setting, currently case insensitive
>
>+nocase -- If set, files and directories read from device will have
>+ their names converted to lowercase. Not set by
>+ default.
>+
> shortname=lower|win95|winnt|mixed
> -- Shortname display/create setting.
> lower: convert to lowercase for display,
>@@ -99,11 +111,26 @@ shortname=lower|win95|winnt|mixed
> tz=UTC -- Interpret timestamps as UTC rather than local time.
> This option disables the conversion of timestamps
> between local time (as used by Windows on FAT) and UTC
>- (which Linux uses internally). This is particuluarly
>+ (which Linux uses internally). This is particularly
> useful when mounting devices (like digital cameras)
> that are set to UTC in order to avoid the pitfalls of
> local time.
>
>+showexec -- If set, files that end if .EXE, .COM, or .BAT will have
>+ the execute permission bits set. Not set by default,
>+ in which case all files show up with the execute bits set.
>+
>+debug -- Can be set, but unused by the current implementation.
>+
>+sys_immutable -- If set, all files on this filesystem which have the SYS
>+ attribute (DOS bit) set will become IMMUTABLE (inode flag)
>+ preventing write operations on these files. Not set by
>+ default.
>+
>+flush -- If set, modified inodes will be flushed to disk on file
>+ close system call. This is ideal for USB connected
>+ devices. Not set by default.
>+
> <bool>: 0,1,yes,no,true,false
>
> TODO
>--
>1.6.0.rc0.43.gb0a469
Bart Trojanowski <[email protected]> writes:
Thanks. However, some parts seem not true. I'll change those to the following.
> +nocase -- If set, files and directories read from device will have
> + their names converted to lowercase. Not set by
> + default.
nocase -- This was deprecated for vfat. Use shortname=win95 instead.
> +showexec -- If set, files that end if .EXE, .COM, or .BAT will have
> + the execute permission bits set. Not set by default,
> + in which case all files show up with the execute bits set.
showexec -- If set, the execute permission bits of the file will be
allowed only if the extension part of the name is .EXE,
.COM, or .BAT. Not set by default.
> +sys_immutable -- If set, all files on this filesystem which have the SYS
> + attribute (DOS bit) set will become IMMUTABLE (inode flag)
> + preventing write operations on these files. Not set by
> + default.
sys_immutable -- If set, ATTR_SYS attribute on FAT is handled as
IMMUTABLE flag on Linux. Not set by default.
> +flush -- If set, modified inodes will be flushed to disk on file
> + close system call. This is ideal for USB connected
> + devices. Not set by default.
flush -- If set, the filesystem will try to flush to disk more
early than normal. Not set by default.
--
OGAWA Hirofumi <[email protected]>
* Grant Coady <[email protected]> [080822 22:51]:
> >+gid=### -- Explisitly set ownership of all files on thsi
> ^^^^
I actually did catch it, but I didn't regenerate the patch before
sending it.
Thanks for reading it over, Grant.
--
WebSig: http://www.jukie.net/~bart/sig/
While debugging a sync mount regression on vfat I noticed that there
were mount options parsed by the driver that were not documented.
Signed-off-by: Bart Trojanowski <[email protected]>
Cc: [email protected]
Cc: [email protected]
---
Documentation/filesystems/vfat.txt | 31 +++++++++++++++++++++++++++++--
1 files changed, 29 insertions(+), 2 deletions(-)
diff --git a/Documentation/filesystems/vfat.txt b/Documentation/filesystems/vfat.txt
index bbac4f1..5ed7918 100644
--- a/Documentation/filesystems/vfat.txt
+++ b/Documentation/filesystems/vfat.txt
@@ -8,6 +8,14 @@ if you want to format from within Linux.
VFAT MOUNT OPTIONS
----------------------------------------------------------------------
+uid=### -- Explicitly set ownership of all files on this
+ filesystem to this user ID number. Default is to use
+ the UID of the mounting process.
+
+gid=### -- Explisitly set ownership of all files on this
+ filesystem to this group ID number. Default is to use
+ the GID of the mounting process.
+
umask=### -- The permission mask (for files and directories, see umask(1)).
The default is the umask of current process.
@@ -36,7 +44,7 @@ codepage=### -- Sets the codepage number for converting to shortname
characters on FAT filesystem.
By default, FAT_DEFAULT_CODEPAGE setting is used.
-iocharset=name -- Character set to use for converting between the
+iocharset=<name> -- Character set to use for converting between the
encoding is used for user visible filename and 16 bit
Unicode characters. Long filenames are stored on disk
in Unicode format, but Unix for the most part doesn't
@@ -86,6 +94,10 @@ check=s|r|n -- Case sensitivity checking setting.
r: relaxed, case insensitive
n: normal, default setting, currently case insensitive
+nocase -- If set, files and directories read from device will have
+ their names converted to lowercase. Not set by
+ default.
+
shortname=lower|win95|winnt|mixed
-- Shortname display/create setting.
lower: convert to lowercase for display,
@@ -99,11 +111,26 @@ shortname=lower|win95|winnt|mixed
tz=UTC -- Interpret timestamps as UTC rather than local time.
This option disables the conversion of timestamps
between local time (as used by Windows on FAT) and UTC
- (which Linux uses internally). This is particuluarly
+ (which Linux uses internally). This is particularly
useful when mounting devices (like digital cameras)
that are set to UTC in order to avoid the pitfalls of
local time.
+showexec -- If set, files that end if .EXE, .COM, or .BAT will have
+ the execute permission bits set. Not set by default,
+ in which case all files show up with the execute bits set.
+
+debug -- Can be set, but unused by the current implementation.
+
+sys_immutable -- If set, all files on this filesystem which have the SYS
+ attribute (DOS bit) set will become IMMUTABLE (inode flag)
+ preventing write operations on these files. Not set by
+ default.
+
+flush -- If set, modified inodes will be flushed to disk on file
+ close system call. This is ideal for USB connected
+ devices. Not set by default.
+
<bool>: 0,1,yes,no,true,false
TODO
--
1.6.0.rc0.43.gb0a469
Bart Trojanowski <[email protected]> writes:
> +gid=### -- Explisitly set ownership of all files on this
> + filesystem to this group ID number. Default is to use
> + the GID of the mounting process.
> +
Thanks. Fixed. Current patch is the following.
--
OGAWA Hirofumi <[email protected]>
From: Bart Trojanowski <[email protected]>
While debugging a sync mount regression on vfat I noticed that there
were mount options parsed by the driver that were not documented.
[[email protected]: fix some parts]
Signed-off-by: Bart Trojanowski <[email protected]>
Signed-off-by: OGAWA Hirofumi <[email protected]>
---
Documentation/filesystems/vfat.txt | 26 ++++++++++++++++++++++++--
1 file changed, 24 insertions(+), 2 deletions(-)
diff -puN Documentation/filesystems/vfat.txt~fat-doc-fixes Documentation/filesystems/vfat.txt
--- linux-2.6/Documentation/filesystems/vfat.txt~fat-doc-fixes 2008-08-23 12:15:06.000000000 +0900
+++ linux-2.6-hirofumi/Documentation/filesystems/vfat.txt 2008-08-23 12:23:15.000000000 +0900
@@ -8,6 +8,14 @@ if you want to format from within Linux.
VFAT MOUNT OPTIONS
----------------------------------------------------------------------
+uid=### -- Explicitly set ownership of all files on this
+ filesystem to this user ID number. Default is to use
+ the UID of the mounting process.
+
+gid=### -- Explisitly set ownership of all files on this
+ filesystem to this group ID number. Default is to use
+ the GID of the mounting process.
+
umask=### -- The permission mask (for files and directories, see umask(1)).
The default is the umask of current process.
@@ -36,7 +44,7 @@ codepage=### -- Sets the codepage numbe
characters on FAT filesystem.
By default, FAT_DEFAULT_CODEPAGE setting is used.
-iocharset=name -- Character set to use for converting between the
+iocharset=<name> -- Character set to use for converting between the
encoding is used for user visible filename and 16 bit
Unicode characters. Long filenames are stored on disk
in Unicode format, but Unix for the most part doesn't
@@ -86,6 +94,8 @@ check=s|r|n -- Case sensitivity checki
r: relaxed, case insensitive
n: normal, default setting, currently case insensitive
+nocase -- This was deprecated for vfat. Use shortname=win95 instead.
+
shortname=lower|win95|winnt|mixed
-- Shortname display/create setting.
lower: convert to lowercase for display,
@@ -99,11 +109,23 @@ shortname=lower|win95|winnt|mixed
tz=UTC -- Interpret timestamps as UTC rather than local time.
This option disables the conversion of timestamps
between local time (as used by Windows on FAT) and UTC
- (which Linux uses internally). This is particuluarly
+ (which Linux uses internally). This is particularly
useful when mounting devices (like digital cameras)
that are set to UTC in order to avoid the pitfalls of
local time.
+showexec -- If set, the execute permission bits of the file will be
+ allowed only if the extension part of the name is .EXE,
+ .COM, or .BAT. Not set by default.
+
+debug -- Can be set, but unused by the current implementation.
+
+sys_immutable -- If set, ATTR_SYS attribute on FAT is handled as
+ IMMUTABLE flag on Linux. Not set by default.
+
+flush -- If set, the filesystem will try to flush to disk more
+ early than normal. Not set by default.
+
<bool>: 0,1,yes,no,true,false
TODO
_
* OGAWA Hirofumi <[email protected]> [080822 23:27]:
> Thanks. Fixed. Current patch is the following.
Indeed, I have made some mistakes.
Now that I read it again...
> +gid=### -- Explisitly set ownership of all files on this
> + filesystem to this group ID number. Default is to use
> + the GID of the mounting process.
... it has a 'explicit' typo, spotted by Ian Ward, and it's not setting
ownership, but rather group ownership. So how about this
gid=### -- Explicitly set group ownership of all files on this
filesystem to this group ID number. Default is to use
the GID of the mounting process.
-Bart
--
WebSig: http://www.jukie.net/~bart/sig/
Bart Trojanowski <[email protected]> writes:
> * OGAWA Hirofumi <[email protected]> [080822 23:27]:
>> Thanks. Fixed. Current patch is the following.
>
> Indeed, I have made some mistakes.
>
> Now that I read it again...
>
>> +gid=### -- Explisitly set ownership of all files on this
>> + filesystem to this group ID number. Default is to use
>> + the GID of the mounting process.
>
> ... it has a 'explicit' typo, spotted by Ian Ward, and it's not setting
> ownership, but rather group ownership. So how about this
>
> gid=### -- Explicitly set group ownership of all files on this
> filesystem to this group ID number. Default is to use
> the GID of the mounting process.
Looks good. However, I've noticed manpage's one may be simpler and
consistent. So, the updated patch is following.
If you found something wrong, please let me know. Thanks
--
OGAWA Hirofumi <[email protected]>
From: Bart Trojanowski <[email protected]>
While debugging a sync mount regression on vfat I noticed that there
were mount options parsed by the driver that were not documented.
[[email protected]: fix some parts]
Signed-off-by: Bart Trojanowski <[email protected]>
Signed-off-by: OGAWA Hirofumi <[email protected]>
---
Documentation/filesystems/vfat.txt | 24 ++++++++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)
diff -puN Documentation/filesystems/vfat.txt~fat-doc-fixes Documentation/filesystems/vfat.txt
--- linux-2.6/Documentation/filesystems/vfat.txt~fat-doc-fixes 2008-08-23 12:15:06.000000000 +0900
+++ linux-2.6-hirofumi/Documentation/filesystems/vfat.txt 2008-08-23 23:38:32.000000000 +0900
@@ -8,6 +8,12 @@ if you want to format from within Linux.
VFAT MOUNT OPTIONS
----------------------------------------------------------------------
+uid=### -- Set the owner of all files on this filesystem.
+ The default is the uid of current process.
+
+gid=### -- Set the group of all files on this filesystem.
+ The default is the gid of current process.
+
umask=### -- The permission mask (for files and directories, see umask(1)).
The default is the umask of current process.
@@ -36,7 +42,7 @@ codepage=### -- Sets the codepage numbe
characters on FAT filesystem.
By default, FAT_DEFAULT_CODEPAGE setting is used.
-iocharset=name -- Character set to use for converting between the
+iocharset=<name> -- Character set to use for converting between the
encoding is used for user visible filename and 16 bit
Unicode characters. Long filenames are stored on disk
in Unicode format, but Unix for the most part doesn't
@@ -86,6 +92,8 @@ check=s|r|n -- Case sensitivity checki
r: relaxed, case insensitive
n: normal, default setting, currently case insensitive
+nocase -- This was deprecated for vfat. Use shortname=win95 instead.
+
shortname=lower|win95|winnt|mixed
-- Shortname display/create setting.
lower: convert to lowercase for display,
@@ -99,11 +107,23 @@ shortname=lower|win95|winnt|mixed
tz=UTC -- Interpret timestamps as UTC rather than local time.
This option disables the conversion of timestamps
between local time (as used by Windows on FAT) and UTC
- (which Linux uses internally). This is particuluarly
+ (which Linux uses internally). This is particularly
useful when mounting devices (like digital cameras)
that are set to UTC in order to avoid the pitfalls of
local time.
+showexec -- If set, the execute permission bits of the file will be
+ allowed only if the extension part of the name is .EXE,
+ .COM, or .BAT. Not set by default.
+
+debug -- Can be set, but unused by the current implementation.
+
+sys_immutable -- If set, ATTR_SYS attribute on FAT is handled as
+ IMMUTABLE flag on Linux. Not set by default.
+
+flush -- If set, the filesystem will try to flush to disk more
+ early than normal. Not set by default.
+
<bool>: 0,1,yes,no,true,false
TODO
_