From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756044Ab0GHMSN (ORCPT ); Thu, 8 Jul 2010 08:18:13 -0400 Received: from mail-wy0-f174.google.com ([74.125.82.174]:61087 "EHLO mail-wy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754674Ab0GHMSJ (ORCPT ); Thu, 8 Jul 2010 08:18:09 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=eD/qlYnbV+34ZUFebt7iVpi2So/LaALShnEQPMiZMrIr8P8PRz6yFcic9LMIy5W2GA LlWLU8IkhG+NJBFR3SLPAuokvt2LUFHY5dpCOiY0o9buJKMutYw6Ht/RG9d7bC8uhM3W 6GHbphKugIp62YJRPY5+ZXIe6ElFGRrcnxobQ= Message-ID: <4C35C1F6.70902@gmail.com> Date: Thu, 08 Jul 2010 15:17:58 +0300 From: Boaz Harrosh User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100430 Fedora/3.0.4-2.fc12 Thunderbird/3.0.4 MIME-Version: 1.0 To: Arnd Bergmann CC: linux-kernel@vger.kernel.org, John Kacur , Frederic Weisbecker , Christoph Hellwig , Julia Lawall , Christoph Hellwig Subject: Re: [PATCH 16/18] llseek: automatically add .llseek fop References: <1278538820-1392-1-git-send-email-arnd@arndb.de> <1278538820-1392-17-git-send-email-arnd@arndb.de> In-Reply-To: <1278538820-1392-17-git-send-email-arnd@arndb.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 07/08/2010 12:40 AM, Arnd Bergmann wrote: > All file_operations should get a .llseek > operation so we can make nonseekable_open > the default for future file operations > without a .llseek pointer. > > The three cases that we can automatically > detect are no_llseek, seq_lseek and > default_llseek. For cases where we can > we can automatically prove that the > file offset is always ignored, we use > noop_llseek, which maintains the current > behavior of not returning an error from > a seek. > > New drivers should normally not use > noop_llseek but instead use no_llseek and > call nonseekable_open at open time. > Existing drivers can be converted to do > the same when the maintainer knows for > certain that no user code relies on calling > seek on the device file. > > The generated code is often incorrectly > indented and right now contains comments that > clarify for each added line why a specific > variant was chosen. In the version that gets > submitted upstream, the comments will be gone > and I will manually fix the indentation, > because there does not seem to be a way to > do that using coccinelle. > > Some amount of new code is currently sitting > in linux-next that should get the same > modifications, which I will do at the end of > the merge window. > > This specific posted version of the patch only > covers first few files in order to avoid > spamming everybody's inbox. I think you still > get the point. The diffstat is complete, and > the full patch is available in the 'llseek' > branch of > git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl.git > > Many thanks to Julia Lawall for helping me > learn to write a semantic patch that does > all this. > > ===== begin semantic patch ===== > // This adds an llseek= method to all file operations, > // as a preparation for making no_llseek the default. > // > // The rules are > // - use no_llseek explicitly if we do nonseekable_open > // - use seq_lseek for sequential files > // - use default_llseek if we know we access f_pos > // - use noop_llseek if we know we don't access f_pos, > // but we still want to allow users to call lseek > // > @ open1 exists @ > identifier nested_open; > @@ > nested_open(...) > { > <+... > nonseekable_open(...) > ...+> > } > > @ open exists@ > identifier open_f; > identifier i, f; > identifier open1.nested_open; > @@ > int open_f(struct inode *i, struct file *f) > { > <+... > ( > nonseekable_open(...) > | > nested_open(...) > ) > ...+> > } > > @ read disable optional_qualifier exists @ > identifier read_f; > identifier f, p, s, off; > type ssize_t, size_t, loff_t; > expression E; > identifier func; > @@ > ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) > { > <+... > ( > *off = E > | > *off += E > | > func(..., off, ...) > | > E = *off > ) > ...+> > } > > @ read_no_fpos disable optional_qualifier exists @ > identifier read_f; > identifier f, p, s, off; > type ssize_t, size_t, loff_t; > @@ > ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) > { > ... when != off > } > > @ write @ > identifier write_f; > identifier f, p, s, off; > type ssize_t, size_t, loff_t; > expression E; > identifier func; > @@ > ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) > { > <+... > ( > *off = E > | > *off += E > | > func(..., off, ...) > | > E = *off > ) > ...+> > } > > @ write_no_fpos @ > identifier write_f; > identifier f, p, s, off; > type ssize_t, size_t, loff_t; > @@ > ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) > { > ... when != off > } > > @ fops0 @ > identifier fops; > @@ > struct file_operations fops = { > ... > }; > > @ has_llseek depends on fops0 @ > identifier fops0.fops; > identifier llseek_f; > @@ > struct file_operations fops = { > ... > .llseek = llseek_f, > ... > }; > > @ has_read depends on fops0 @ > identifier fops0.fops; > identifier read_f; > @@ > struct file_operations fops = { > ... > .read = read_f, > ... > }; > > @ has_write depends on fops0 @ > identifier fops0.fops; > identifier write_f; > @@ > struct file_operations fops = { > ... > .write = write_f, > ... > }; > > @ has_open depends on fops0 @ > identifier fops0.fops; > identifier open_f; > @@ > struct file_operations fops = { > ... > .open = open_f, > ... > }; > > // use no_llseek if we call nonseekable_open > //////////////////////////////////////////// > @ nonseekable1 depends on !has_llseek && has_open @ > identifier fops0.fops; > identifier nso ~= "nonseekable_open"; > @@ > struct file_operations fops = { > ... .open = nso, ... > +.llseek = no_llseek, /* nonseekable */ > }; > > @ nonseekable2 depends on !has_llseek @ > identifier fops0.fops; > identifier open.open_f; > @@ > struct file_operations fops = { > ... .open = open_f, ... > +.llseek = no_llseek, /* open uses nonseekable */ > }; > > // use seq_lseek for sequential files > ///////////////////////////////////// > @ seq depends on !has_llseek @ > identifier fops0.fops; > identifier sr ~= "seq_read"; > @@ > struct file_operations fops = { > ... .read = sr, ... > +.llseek = seq_lseek, /* we have seq_read */ > }; > > // use default_llseek if there is a readdir > /////////////////////////////////////////// > @ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ > identifier fops0.fops; > identifier readdir_e; > @@ > // any other fop is used that changes pos > struct file_operations fops = { > ... .readdir = readdir_e, ... > +.llseek = default_llseek, /* readdir is present */ > }; > > // use default_llseek if at least one of read/write touches f_pos > ///////////////////////////////////////////////////////////////// > @ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ > identifier fops0.fops; > identifier read.read_f; > @@ > // read fops use offset > struct file_operations fops = { > ... .read = read_f, ... > +.llseek = default_llseek, /* read accesses f_pos */ > }; > > @ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ > identifier fops0.fops; > identifier write.write_f; > @@ > // write fops use offset > struct file_operations fops = { > ... .write = write_f, ... > + .llseek = default_llseek, /* write accesses f_pos */ > }; > > // Use noop_llseek if neither read nor write accesses f_pos > /////////////////////////////////////////////////////////// > > @ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ > identifier fops0.fops; > identifier read_no_fpos.read_f; > identifier write_no_fpos.write_f; > @@ > // write fops use offset > struct file_operations fops = { > ... > .write = write_f, > .read = read_f, > ... > +.llseek = noop_llseek, /* read and write both use no f_pos */ > }; > > @ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ > identifier fops0.fops; > identifier write_no_fpos.write_f; > @@ > struct file_operations fops = { > ... .write = write_f, ... > +.llseek = noop_llseek, /* write uses no f_pos */ > }; > > @ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ > identifier fops0.fops; > identifier read_no_fpos.read_f; > @@ > struct file_operations fops = { > ... .read = read_f, ... > +.llseek = noop_llseek, /* read uses no f_pos */ > }; > > @ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ > identifier fops0.fops; > @@ > struct file_operations fops = { > ... > +.llseek = noop_llseek, /* no read or write fn */ > }; > ===== End semantic patch ===== > > Signed-off-by: Arnd Bergmann > Cc: Julia Lawall > Cc: Christoph Hellwig > --- > arch/arm/kernel/etm.c | 1 + > arch/arm/mach-msm/last_radio_log.c | 3 +- > arch/arm/mach-msm/smd_debug.c | 1 + > arch/arm/plat-mxc/audmux-v2.c | 1 + > arch/avr32/boards/mimc200/fram.c | 1 + > arch/blackfin/kernel/kgdb_test.c | 1 + > arch/blackfin/mach-bf561/coreb.c | 1 + > arch/cris/arch-v10/drivers/ds1302.c | 1 + > arch/cris/arch-v10/drivers/gpio.c | 1 + > arch/cris/arch-v10/drivers/i2c.c | 1 + > arch/cris/arch-v10/drivers/pcf8563.c | 1 + > arch/cris/arch-v10/drivers/sync_serial.c | 3 +- > arch/cris/arch-v32/drivers/cryptocop.c | 3 +- > arch/cris/arch-v32/drivers/i2c.c | 1 + > arch/cris/arch-v32/drivers/mach-a3/gpio.c | 1 + > arch/cris/arch-v32/drivers/mach-fs/gpio.c | 1 + > arch/cris/arch-v32/drivers/pcf8563.c | 1 + > arch/cris/arch-v32/drivers/sync_serial.c | 3 +- > arch/cris/kernel/profile.c | 1 + > arch/ia64/kernel/salinfo.c | 2 + > arch/ia64/sn/kernel/sn2/sn_hwperf.c | 1 + > arch/m68k/bvme6000/rtc.c | 1 + > arch/m68k/mvme16x/rtc.c | 1 + > arch/mips/kernel/rtlx.c | 3 +- > arch/mips/kernel/vpe.c | 3 +- > arch/mips/sibyte/common/sb_tbprof.c | 1 + > arch/powerpc/kernel/lparcfg.c | 1 + > arch/powerpc/kernel/rtas_flash.c | 3 ++ > arch/powerpc/kernel/rtasd.c | 1 + > arch/powerpc/platforms/iseries/mf.c | 1 + > arch/powerpc/platforms/pseries/reconfig.c | 3 +- > arch/powerpc/platforms/pseries/scanlog.c | 1 + > arch/s390/crypto/prng.c | 1 + > arch/s390/hypfs/hypfs_diag.c | 1 + > arch/s390/hypfs/hypfs_vm.c | 1 + > arch/s390/hypfs/inode.c | 1 + > arch/s390/kernel/debug.c | 1 + > arch/sh/boards/mach-landisk/gio.c | 1 + > arch/sparc/kernel/apc.c | 1 + > arch/sparc/kernel/mdesc.c | 1 + > arch/um/drivers/harddog_kern.c | 1 + > arch/um/drivers/mconsole_kern.c | 1 + > arch/um/drivers/mmapper_kern.c | 1 + > arch/um/drivers/random.c | 1 + > arch/x86/kernel/apm_32.c | 1 + > arch/x86/kernel/cpu/mcheck/mce-severity.c | 1 + > arch/x86/kernel/cpu/mcheck/mce.c | 1 + > arch/x86/kernel/kdebugfs.c | 1 + > arch/x86/kernel/microcode_core.c | 1 + > arch/x86/xen/debugfs.c | 1 + > block/bsg.c | 1 + > drivers/acpi/debug.c | 1 + > drivers/acpi/event.c | 1 + > drivers/acpi/system.c | 2 + > drivers/block/DAC960.c | 3 +- > drivers/block/aoe/aoechr.c | 1 + > drivers/block/paride/pg.c | 1 + > drivers/block/paride/pt.c | 1 + > drivers/block/pktcdvd.c | 1 + > drivers/bluetooth/btmrvl_debugfs.c | 10 +++++++ > drivers/bluetooth/hci_vhci.c | 1 + > drivers/char/apm-emulation.c | 1 + > drivers/char/bfin-otp.c | 1 + > drivers/char/briq_panel.c | 1 + > drivers/char/bsr.c | 1 + > drivers/char/cs5535_gpio.c | 3 +- > drivers/char/ds1302.c | 1 + > drivers/char/ds1620.c | 1 + > drivers/char/dsp56k.c | 1 + > drivers/char/dtlk.c | 1 + > drivers/char/genrtc.c | 1 + > drivers/char/hw_random/core.c | 1 + > drivers/char/ip2/ip2main.c | 1 + > drivers/char/ipmi/ipmi_devintf.c | 1 + > drivers/char/ipmi/ipmi_watchdog.c | 1 + > drivers/char/istallion.c | 1 + > drivers/char/lp.c | 1 + > drivers/char/mem.c | 3 ++ > drivers/char/misc.c | 1 + > drivers/char/mmtimer.c | 1 + > drivers/char/mspec.c | 9 ++++-- > drivers/char/mwave/mwavedd.c | 3 +- > drivers/char/nwbutton.c | 1 + > drivers/char/pc8736x_gpio.c | 1 + > drivers/char/pcmcia/cm4000_cs.c | 1 + > drivers/char/pcmcia/cm4040_cs.c | 1 + > drivers/char/random.c | 2 + > drivers/char/rio/rio_linux.c | 1 + > drivers/char/scx200_gpio.c | 1 + > drivers/char/snsc.c | 1 + > drivers/char/stallion.c | 1 + > drivers/char/sx.c | 1 + > drivers/char/sysrq.c | 1 + > drivers/char/tb0219.c | 1 + > drivers/char/tlclk.c | 1 + > drivers/char/toshiba.c | 1 + > drivers/char/uv_mmtimer.c | 1 + > drivers/char/virtio_console.c | 3 ++ > drivers/char/xilinx_hwicap/xilinx_hwicap.c | 1 + > drivers/dma/coh901318.c | 1 + > drivers/gpu/drm/drm_drv.c | 3 +- > drivers/gpu/drm/i810/i810_dma.c | 1 + > drivers/gpu/drm/i830/i830_dma.c | 1 + > drivers/gpu/drm/i915/i915_debugfs.c | 1 + > drivers/gpu/vga/vgaarb.c | 1 + > drivers/hid/hid-debug.c | 1 + > drivers/hid/hid-roccat.c | 1 + > drivers/hid/hidraw.c | 1 + > drivers/hid/usbhid/hiddev.c | 1 + > drivers/hwmon/asus_atk0110.c | 1 + > drivers/ide/ide-tape.c | 1 + > drivers/idle/i7300_idle.c | 1 + > drivers/infiniband/hw/cxgb4/device.c | 1 + > drivers/infiniband/hw/ipath/ipath_diag.c | 4 ++- > drivers/infiniband/hw/ipath/ipath_file_ops.c | 3 +- > drivers/infiniband/hw/ipath/ipath_fs.c | 3 ++ > drivers/infiniband/hw/qib/qib_diag.c | 4 ++- > drivers/infiniband/hw/qib/qib_file_ops.c | 3 +- > drivers/infiniband/hw/qib/qib_fs.c | 1 + > drivers/input/evdev.c | 3 +- > drivers/input/input.c | 1 + > drivers/input/joydev.c | 1 + > drivers/input/misc/uinput.c | 1 + > drivers/input/mousedev.c | 1 + > drivers/input/serio/serio_raw.c | 1 + > drivers/isdn/mISDN/timerdev.c | 1 + > drivers/lguest/lguest_user.c | 1 + > drivers/macintosh/ans-lcd.c | 1 + > drivers/macintosh/via-pmu.c | 1 + > drivers/md/dm-ioctl.c | 1 + > drivers/media/IR/imon.c | 6 +++- > drivers/media/dvb/bt8xx/dst_ca.c | 3 +- > drivers/media/dvb/dvb-core/dmxdev.c | 2 + > drivers/media/dvb/dvb-core/dvb_ca_en50221.c | 1 + > drivers/media/dvb/dvb-core/dvb_frontend.c | 3 +- > drivers/media/dvb/dvb-core/dvb_net.c | 1 + > drivers/media/dvb/dvb-core/dvbdev.c | 1 + > drivers/media/dvb/firewire/firedtv-ci.c | 1 + > drivers/media/dvb/ttpci/av7110.c | 1 + > drivers/media/dvb/ttpci/av7110_av.c | 2 + > drivers/media/dvb/ttpci/av7110_ca.c | 1 + > drivers/media/dvb/ttpci/av7110_ir.c | 1 + > drivers/mfd/ab3100-core.c | 1 + > drivers/misc/hpilo.c | 1 + > drivers/misc/phantom.c | 1 + > drivers/misc/sgi-gru/grufile.c | 1 + > drivers/mmc/core/debugfs.c | 1 + > drivers/mtd/ubi/cdev.c | 1 + > drivers/net/cxgb4/cxgb4_main.c | 1 + > drivers/net/ppp_generic.c | 3 +- > drivers/net/wimax/i2400m/debugfs.c | 2 + > drivers/net/wireless/airo.c | 24 ++++++++++++------ > drivers/net/wireless/ath/ath5k/debug.c | 6 ++++ > drivers/net/wireless/ath/ath9k/debug.c | 33 ++++++++++++++++-------- > drivers/net/wireless/ath/ath9k/htc_drv_main.c | 9 ++++-- > drivers/net/wireless/iwlwifi/iwl-3945-rs.c | 1 + > drivers/net/wireless/iwlwifi/iwl-agn-rs.c | 3 ++ > drivers/net/wireless/iwmc3200wifi/debugfs.c | 4 +++ > drivers/net/wireless/iwmc3200wifi/sdio.c | 1 + > drivers/net/wireless/libertas/debugfs.c | 1 + > drivers/net/wireless/ray_cs.c | 2 + > drivers/net/wireless/rt2x00/rt2x00debug.c | 4 +++ > drivers/net/wireless/wl12xx/wl1251_debugfs.c | 2 + > drivers/net/wireless/wl12xx/wl1271_debugfs.c | 4 ++- > drivers/oprofile/oprofile_files.c | 8 +++++- > drivers/oprofile/oprofilefs.c | 3 ++ > drivers/pci/pcie/aer/aer_inject.c | 1 + > drivers/pcmcia/pcmcia_ioctl.c | 1 + > drivers/platform/x86/sony-laptop.c | 1 + > drivers/rtc/rtc-m41t80.c | 1 + > drivers/s390/block/dasd_eer.c | 1 + > drivers/s390/char/fs3270.c | 1 + > drivers/s390/char/monreader.c | 1 + > drivers/s390/char/monwriter.c | 1 + > drivers/s390/char/tape_char.c | 1 + > drivers/s390/char/vmcp.c | 1 + > drivers/s390/char/vmlogrdr.c | 1 + > drivers/s390/char/vmwatchdog.c | 1 + > drivers/s390/char/zcore.c | 2 + > drivers/s390/cio/chsc_sch.c | 1 + > drivers/s390/cio/css.c | 1 + > drivers/s390/crypto/zcrypt_api.c | 3 +- > drivers/s390/scsi/zfcp_cfdc.c | 3 +- > drivers/sbus/char/display7seg.c | 1 + > drivers/sbus/char/envctrl.c | 1 + > drivers/scsi/3w-9xxx.c | 3 +- > drivers/scsi/3w-sas.c | 3 +- > drivers/scsi/3w-xxxx.c | 3 +- > drivers/scsi/aacraid/linit.c | 1 + > drivers/scsi/ch.c | 1 + > drivers/scsi/dpt_i2o.c | 1 + > drivers/scsi/gdth.c | 1 + > drivers/scsi/megaraid.c | 1 + > drivers/scsi/megaraid/megaraid_mm.c | 1 + > drivers/scsi/megaraid/megaraid_sas.c | 1 + > drivers/scsi/mpt2sas/mpt2sas_ctl.c | 1 + > drivers/scsi/osd/osd_uld.c | 1 + > drivers/scsi/pmcraid.c | 1 + > drivers/scsi/qla2xxx/qla_os.c | 1 + > drivers/scsi/scsi_tgt_if.c | 1 + > drivers/scsi/sg.c | 1 + > drivers/spi/dw_spi.c | 1 + > drivers/spi/spidev.c | 1 + > drivers/staging/batman-adv/device.c | 1 + > drivers/staging/comedi/comedi_fops.c | 1 + > drivers/staging/crystalhd/crystalhd_lnx.c | 1 + > drivers/staging/dream/camera/msm_camera.c | 3 ++ > drivers/staging/dream/pmem.c | 2 + > drivers/staging/dream/qdsp5/adsp_driver.c | 1 + > drivers/staging/dream/qdsp5/audio_aac.c | 1 + > drivers/staging/dream/qdsp5/audio_amrnb.c | 1 + > drivers/staging/dream/qdsp5/audio_evrc.c | 1 + > drivers/staging/dream/qdsp5/audio_in.c | 2 + > drivers/staging/dream/qdsp5/audio_mp3.c | 1 + > drivers/staging/dream/qdsp5/audio_out.c | 2 + > drivers/staging/dream/qdsp5/audio_qcelp.c | 1 + > drivers/staging/dream/qdsp5/evlog.h | 1 + > drivers/staging/dream/qdsp5/snd.c | 1 + > drivers/staging/dt3155/dt3155_drv.c | 3 +- > drivers/staging/frontier/alphatrack.c | 1 + > drivers/staging/frontier/tranzport.c | 1 + > drivers/staging/iio/industrialio-core.c | 1 + > drivers/staging/iio/industrialio-ring.c | 1 + > drivers/staging/memrar/memrar_handler.c | 1 + > drivers/staging/panel/panel.c | 1 + > drivers/staging/sep/sep_driver.c | 1 + > drivers/telephony/ixj.c | 3 +- > drivers/telephony/phonedev.c | 1 + > drivers/uio/uio.c | 1 + > drivers/usb/class/cdc-wdm.c | 3 +- > drivers/usb/class/usblp.c | 1 + > drivers/usb/class/usbtmc.c | 1 + > drivers/usb/core/file.c | 1 + > drivers/usb/gadget/f_hid.c | 1 + > drivers/usb/gadget/printer.c | 3 +- > drivers/usb/host/ehci-dbg.c | 3 ++ > drivers/usb/host/ohci-dbg.c | 3 ++ > drivers/usb/image/mdc800.c | 1 + > drivers/usb/misc/adutux.c | 1 + > drivers/usb/misc/idmouse.c | 1 + > drivers/usb/misc/iowarrior.c | 1 + > drivers/usb/misc/ldusb.c | 1 + > drivers/usb/misc/rio500.c | 1 + > drivers/usb/misc/usblcd.c | 1 + > drivers/usb/usb-skeleton.c | 1 + > drivers/vhost/net.c | 1 + > drivers/video/fbmem.c | 1 + > drivers/video/mbx/mbxdebugfs.c | 6 ++++ > drivers/watchdog/ar7_wdt.c | 1 + > drivers/watchdog/cpwd.c | 1 + > drivers/watchdog/ep93xx_wdt.c | 1 + > drivers/watchdog/omap_wdt.c | 1 + > drivers/xen/evtchn.c | 1 + > drivers/xen/xenfs/super.c | 1 + > drivers/xen/xenfs/xenbus.c | 1 + > fs/afs/mntpt.c | 1 + > fs/autofs4/dev-ioctl.c | 1 + > fs/binfmt_misc.c | 3 ++ > fs/btrfs/super.c | 1 + > fs/cachefiles/daemon.c | 1 + > fs/char_dev.c | 1 + > fs/coda/pioctl.c | 1 + > fs/coda/psdev.c | 1 + > fs/debugfs/file.c | 3 ++ > fs/dlm/debug_fs.c | 3 +- > fs/dlm/plock.c | 3 +- > fs/dlm/user.c | 3 ++ > fs/ecryptfs/file.c | 1 + > fs/ecryptfs/miscdev.c | 1 + > fs/eventfd.c | 1 + > fs/eventpoll.c | 3 +- > fs/fifo.c | 1 + > fs/fuse/control.c | 4 +++ > fs/fuse/cuse.c | 1 + > fs/gfs2/file.c | 2 + > fs/hppfs/hppfs.c | 1 + > fs/hugetlbfs/inode.c | 1 + > fs/logfs/dir.c | 1 + > fs/nfsd/nfsctl.c | 1 + > fs/no-block.c | 1 + > fs/notify/inotify/inotify_user.c | 1 + > fs/ntfs/file.c | 3 +- > fs/ocfs2/dlmfs/dlmfs.c | 1 + > fs/ocfs2/stack_user.c | 1 + > fs/proc/base.c | 7 +++++ > fs/proc/proc_sysctl.c | 1 + > fs/proc/root.c | 1 + > fs/proc/task_mmu.c | 1 + > fs/romfs/super.c | 1 + > fs/signalfd.c | 1 + > fs/squashfs/dir.c | 3 +- > fs/timerfd.c | 1 + > fs/ubifs/debug.c | 1 + > ipc/mqueue.c | 1 + > ipc/shm.c | 2 + > kernel/configs.c | 1 + > kernel/gcov/fs.c | 1 + > kernel/kprobes.c | 1 + > kernel/pm_qos_params.c | 1 + > kernel/profile.c | 1 + > kernel/trace/blktrace.c | 2 + > kernel/trace/ftrace.c | 2 + > kernel/trace/ring_buffer.c | 1 + > kernel/trace/trace_events.c | 7 +++++ > kernel/trace/trace_ksym.c | 1 + > kernel/trace/trace_stack.c | 1 + > kernel/trace/trace_sysprof.c | 1 + > lib/dma-debug.c | 1 + > net/atm/proc.c | 1 + > net/dccp/probe.c | 1 + > net/ipv4/tcp_probe.c | 1 + > net/mac80211/debugfs.c | 19 ++++++++++---- > net/mac80211/rate.c | 1 + > net/mac80211/rc80211_minstrel_debugfs.c | 1 + > net/mac80211/rc80211_pid_debugfs.c | 1 + > net/netfilter/xt_recent.c | 1 + > net/nonet.c | 1 + > net/rfkill/core.c | 1 + > net/sctp/probe.c | 1 + > net/socket.c | 1 + > net/sunrpc/cache.c | 2 + > net/wireless/debugfs.c | 1 + > samples/tracepoints/tracepoint-sample.c | 1 + > security/inode.c | 1 + > security/smack/smackfs.c | 5 ++++ > security/tomoyo/common.c | 1 + > sound/core/seq/oss/seq_oss.c | 1 + > sound/core/sound.c | 3 +- > sound/oss/au1550_ac97.c | 2 + > sound/oss/msnd_pinnacle.c | 1 + > sound/oss/sh_dac_audio.c | 1 + > sound/soc/soc-core.c | 1 + > sound/soc/soc-dapm.c | 1 + > sound/sound_core.c | 1 + > virt/kvm/kvm_main.c | 3 ++ > 335 files changed, 528 insertions(+), 69 deletions(-) > > diff --git a/arch/arm/kernel/etm.c b/arch/arm/kernel/etm.c > index 8277539..88f48c7 100644 > --- a/arch/arm/kernel/etm.c > +++ b/arch/arm/kernel/etm.c > @@ -314,6 +314,7 @@ static const struct file_operations etb_fops = { > .read = etb_read, > .open = etb_open, > .release = etb_release, > + .llseek = no_llseek,/* open uses nonseekable */ > }; > > static struct miscdevice etb_miscdev = { > diff --git a/arch/arm/mach-msm/last_radio_log.c b/arch/arm/mach-msm/last_radio_log.c > index b64ba5a..81058a3 100644 > --- a/arch/arm/mach-msm/last_radio_log.c > +++ b/arch/arm/mach-msm/last_radio_log.c > @@ -48,7 +48,8 @@ static ssize_t last_radio_log_read(struct file *file, char __user *buf, > } > > static struct file_operations last_radio_log_fops = { > - .read = last_radio_log_read > + .read = last_radio_log_read, > + .llseek = default_llseek,/* read accesses f_pos */ > }; > > void msm_init_last_radio_log(struct module *owner) > diff --git a/arch/arm/mach-msm/smd_debug.c b/arch/arm/mach-msm/smd_debug.c > index 3b2dd71..e01a1ef 100644 > --- a/arch/arm/mach-msm/smd_debug.c > +++ b/arch/arm/mach-msm/smd_debug.c > @@ -212,6 +212,7 @@ static int debug_open(struct inode *inode, struct file *file) > static const struct file_operations debug_ops = { > .read = debug_read, > .open = debug_open, > + .llseek = default_llseek,/* read accesses f_pos */ > }; > > static void debug_create(const char *name, mode_t mode, > diff --git a/arch/arm/plat-mxc/audmux-v2.c b/arch/arm/plat-mxc/audmux-v2.c > index 0c2cc5c..7de36c6 100644 > --- a/arch/arm/plat-mxc/audmux-v2.c > +++ b/arch/arm/plat-mxc/audmux-v2.c > @@ -141,6 +141,7 @@ static ssize_t audmux_read_file(struct file *file, char __user *user_buf, > static const struct file_operations audmux_debugfs_fops = { > .open = audmux_open_file, > .read = audmux_read_file, > + .llseek = default_llseek,/* read accesses f_pos */ > }; > > static void audmux_debugfs_init(void) > diff --git a/arch/avr32/boards/mimc200/fram.c b/arch/avr32/boards/mimc200/fram.c > index 54fbd95..a34cf5d 100644 > --- a/arch/avr32/boards/mimc200/fram.c > +++ b/arch/avr32/boards/mimc200/fram.c > @@ -41,6 +41,7 @@ static int fram_mmap(struct file *filp, struct vm_area_struct *vma) > static const struct file_operations fram_fops = { > .owner = THIS_MODULE, > .mmap = fram_mmap, > + .llseek = noop_llseek,/* no read or write fn */ > }; > > #define FRAM_MINOR 0 > diff --git a/arch/blackfin/kernel/kgdb_test.c b/arch/blackfin/kernel/kgdb_test.c > index 9a4b075..1a5fae7 100644 > --- a/arch/blackfin/kernel/kgdb_test.c > +++ b/arch/blackfin/kernel/kgdb_test.c > @@ -88,6 +88,7 @@ static const struct file_operations kgdb_test_proc_fops = { > .owner = THIS_MODULE, > .read = kgdb_test_proc_read, > .write = kgdb_test_proc_write, > + .llseek = noop_llseek,/* read and write both use no f_pos */ > }; > > static int __init kgdbtest_init(void) > diff --git a/arch/blackfin/mach-bf561/coreb.c b/arch/blackfin/mach-bf561/coreb.c > index deb2271..0cb1f77 100644 > --- a/arch/blackfin/mach-bf561/coreb.c > +++ b/arch/blackfin/mach-bf561/coreb.c > @@ -51,6 +51,7 @@ coreb_ioctl(struct file *file, unsigned int cmd, unsigned long arg) > static const struct file_operations coreb_fops = { > .owner = THIS_MODULE, > .unlocked_ioctl = coreb_ioctl, > + .llseek = noop_llseek,/* no read or write fn */ > }; > > static struct miscdevice coreb_dev = { > diff --git a/arch/cris/arch-v10/drivers/ds1302.c b/arch/cris/arch-v10/drivers/ds1302.c > index 8842756..b6d8d33 100644 > --- a/arch/cris/arch-v10/drivers/ds1302.c > +++ b/arch/cris/arch-v10/drivers/ds1302.c > @@ -387,6 +387,7 @@ print_rtc_status(void) > static const struct file_operations rtc_fops = { > .owner = THIS_MODULE, > .unlocked_ioctl = rtc_unlocked_ioctl, > + .llseek = noop_llseek,/* no read or write fn */ > }; > > /* Probe for the chip by writing something to its RAM and try reading it back. */ > diff --git a/arch/cris/arch-v10/drivers/gpio.c b/arch/cris/arch-v10/drivers/gpio.c > index 4b0f65f..2516c2e 100644 > --- a/arch/cris/arch-v10/drivers/gpio.c > +++ b/arch/cris/arch-v10/drivers/gpio.c > @@ -719,6 +719,7 @@ static const struct file_operations gpio_fops = { > .write = gpio_write, > .open = gpio_open, > .release = gpio_release, > + .llseek = noop_llseek,/* write uses no f_pos */ > }; > > static void ioif_watcher(const unsigned int gpio_in_available, > diff --git a/arch/cris/arch-v10/drivers/i2c.c b/arch/cris/arch-v10/drivers/i2c.c > index a8737a8..fc25b5f 100644 > --- a/arch/cris/arch-v10/drivers/i2c.c > +++ b/arch/cris/arch-v10/drivers/i2c.c > @@ -622,6 +622,7 @@ static const struct file_operations i2c_fops = { > .ioctl = i2c_ioctl, > .open = i2c_open, > .release = i2c_release, > + .llseek = noop_llseek,/* no read or write fn */ > }; > > int __init > diff --git a/arch/cris/arch-v10/drivers/pcf8563.c b/arch/cris/arch-v10/drivers/pcf8563.c > index 7dcb1f8..fbf135b 100644 > --- a/arch/cris/arch-v10/drivers/pcf8563.c > +++ b/arch/cris/arch-v10/drivers/pcf8563.c > @@ -64,6 +64,7 @@ static int voltage_low; > static const struct file_operations pcf8563_fops = { > .owner = THIS_MODULE, > .unlocked_ioctl = pcf8563_unlocked_ioctl, > + .llseek = noop_llseek,/* no read or write fn */ > }; > > unsigned char > diff --git a/arch/cris/arch-v10/drivers/sync_serial.c b/arch/cris/arch-v10/drivers/sync_serial.c > index 109dcd8..dd9b18b 100644 > --- a/arch/cris/arch-v10/drivers/sync_serial.c > +++ b/arch/cris/arch-v10/drivers/sync_serial.c > @@ -250,7 +250,8 @@ static const struct file_operations sync_serial_fops = { > .poll = sync_serial_poll, > .ioctl = sync_serial_ioctl, > .open = sync_serial_open, > - .release = sync_serial_release > + .release = sync_serial_release, > + .llseek = noop_llseek,/* read and write both use no f_pos */ > }; > > static int __init etrax_sync_serial_init(void) > diff --git a/arch/cris/arch-v32/drivers/cryptocop.c b/arch/cris/arch-v32/drivers/cryptocop.c > index b70fb34..540d94d 100644 > --- a/arch/cris/arch-v32/drivers/cryptocop.c > +++ b/arch/cris/arch-v32/drivers/cryptocop.c > @@ -282,7 +282,8 @@ const struct file_operations cryptocop_fops = { > .owner = THIS_MODULE, > .open = cryptocop_open, > .release = cryptocop_release, > - .ioctl = cryptocop_ioctl > + .ioctl = cryptocop_ioctl, > + .llseek = noop_llseek,/* no read or write fn */ > }; > > > diff --git a/arch/cris/arch-v32/drivers/i2c.c b/arch/cris/arch-v32/drivers/i2c.c > index 2fd6a74..69a1d9a 100644 > --- a/arch/cris/arch-v32/drivers/i2c.c > +++ b/arch/cris/arch-v32/drivers/i2c.c > @@ -698,6 +698,7 @@ static const struct file_operations i2c_fops = { > .unlocked_ioctl = i2c_ioctl, > .open = i2c_open, > .release = i2c_release, > + .llseek = noop_llseek,/* no read or write fn */ > }; > > static int __init i2c_init(void) > diff --git a/arch/cris/arch-v32/drivers/mach-a3/gpio.c b/arch/cris/arch-v32/drivers/mach-a3/gpio.c > index 97357cf..13bf637 100644 > --- a/arch/cris/arch-v32/drivers/mach-a3/gpio.c > +++ b/arch/cris/arch-v32/drivers/mach-a3/gpio.c > @@ -883,6 +883,7 @@ static const struct file_operations gpio_fops = { > .write = gpio_write, > .open = gpio_open, > .release = gpio_release, > + .llseek = noop_llseek,/* write uses no f_pos */ > }; > > #ifdef CONFIG_ETRAX_VIRTUAL_GPIO > I only got up to here in the email. (See ml sig below) Do you have this on git or better gitweb somewhere? Boaz > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >