[PATCH] mark struct file_operations const 4

Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

[akpm@sdl.org: dvb fix]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

67 files changed, 78 insertions, 78 deletions

diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c
index 7cec6de5e2b..f729eebf771 100644
--- a/drivers/macintosh/adb.c
+++ b/drivers/macintosh/adb.c
@@ -885,7 +885,7 @@ out:
 	return ret;
 }
 
-static struct file_operations adb_fops = {
+static const struct file_operations adb_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.read		= adb_read,
diff --git a/drivers/macintosh/ans-lcd.c b/drivers/macintosh/ans-lcd.c
index 2b8a6e821d4..cdd5a0f72e3 100644
--- a/drivers/macintosh/ans-lcd.c
+++ b/drivers/macintosh/ans-lcd.c
@@ -121,7 +121,7 @@ anslcd_open( struct inode * inode, struct file * file )
 	return 0;
 }
 
-struct file_operations anslcd_fops = {
+const struct file_operations anslcd_fops = {
 	.write	= anslcd_write,
 	.ioctl	= anslcd_ioctl,
 	.open	= anslcd_open,
diff --git a/drivers/macintosh/apm_emu.c b/drivers/macintosh/apm_emu.c
index 4300c628f8a..a6d50f4fabd 100644
--- a/drivers/macintosh/apm_emu.c
+++ b/drivers/macintosh/apm_emu.c
@@ -501,7 +501,7 @@ static int apm_emu_get_info(char *buf, char **start, off_t fpos, int length)
 	return p - buf;
 }
 
-static struct file_operations apm_bios_fops = {
+static const struct file_operations apm_bios_fops = {
 	.owner		= THIS_MODULE,
 	.read		= do_read,
 	.poll		= do_poll,
diff --git a/drivers/macintosh/nvram.c b/drivers/macintosh/nvram.c
index 30791875fc9..b195d753d2e 100644
--- a/drivers/macintosh/nvram.c
+++ b/drivers/macintosh/nvram.c
@@ -100,7 +100,7 @@ static int nvram_ioctl(struct inode *inode, struct file *file,
 	return 0;
 }
 
-struct file_operations nvram_fops = {
+const struct file_operations nvram_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= nvram_llseek,
 	.read		= read_nvram,
diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c
index 6f30459b938..3096836d8bd 100644
--- a/drivers/macintosh/smu.c
+++ b/drivers/macintosh/smu.c
@@ -1277,7 +1277,7 @@ static int smu_release(struct inode *inode, struct file *file)
 }
 
 
-static struct file_operations smu_device_fops = {
+static const struct file_operations smu_device_fops = {
 	.llseek		= no_llseek,
 	.read		= smu_read,
 	.write		= smu_write,
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index eb6653f69ce..96bea4b62c4 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -2672,7 +2672,7 @@ pmu_ioctl(struct inode * inode, struct file *filp,
 	return error;
 }
 
-static struct file_operations pmu_device_fops = {
+static const struct file_operations pmu_device_fops = {
 	.read		= pmu_read,
 	.write		= pmu_write,
 	.poll		= pmu_fpoll,
diff --git a/drivers/macintosh/via-pmu68k.c b/drivers/macintosh/via-pmu68k.c
index 93e6ef9233f..4f5b6fa196c 100644
--- a/drivers/macintosh/via-pmu68k.c
+++ b/drivers/macintosh/via-pmu68k.c
@@ -1040,7 +1040,7 @@ static int pmu_ioctl(struct inode * inode, struct file *filp,
 	return -EINVAL;
 }
 
-static struct file_operations pmu_device_fops = {
+static const struct file_operations pmu_device_fops = {
 	.read		= pmu_read,
 	.write		= pmu_write,
 	.ioctl		= pmu_ioctl,
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index cd6a184536a..b441d82c338 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1473,7 +1473,7 @@ static int ctl_ioctl(struct inode *inode, struct file *file,
 	return r;
 }
 
-static struct file_operations _ctl_fops = {
+static const struct file_operations _ctl_fops = {
 	.ioctl	 = ctl_ioctl,
 	.owner	 = THIS_MODULE,
 };
diff --git a/drivers/md/md.c b/drivers/md/md.c
index e8807ea5377..e85fa75a791 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4920,7 +4920,7 @@ static unsigned int mdstat_poll(struct file *filp, poll_table *wait)
 	return mask;
 }
 
-static struct file_operations md_seq_fops = {
+static const struct file_operations md_seq_fops = {
 	.owner		= THIS_MODULE,
 	.open           = md_seq_open,
 	.read           = seq_read,
diff --git a/drivers/media/common/saa7146_fops.c b/drivers/media/common/saa7146_fops.c
index d867a6a9e43..b8dcfa16526 100644
--- a/drivers/media/common/saa7146_fops.c
+++ b/drivers/media/common/saa7146_fops.c
@@ -416,7 +416,7 @@ static ssize_t fops_write(struct file *file, const char __user *data, size_t cou
 	}
 }
 
-static struct file_operations video_fops =
+static const struct file_operations video_fops =
 {
 	.owner		= THIS_MODULE,
 	.open		= fops_open,
diff --git a/drivers/media/radio/dsbr100.c b/drivers/media/radio/dsbr100.c
index db865a0667e..df8d0520d1d 100644
--- a/drivers/media/radio/dsbr100.c
+++ b/drivers/media/radio/dsbr100.c
@@ -144,7 +144,7 @@ struct dsbr100_device {
 
 
 /* File system interface */
-static struct file_operations usb_dsbr100_fops = {
+static const struct file_operations usb_dsbr100_fops = {
 	.owner =	THIS_MODULE,
 	.open =		usb_dsbr100_open,
 	.release =     	usb_dsbr100_close,
diff --git a/drivers/media/radio/miropcm20-radio.c b/drivers/media/radio/miropcm20-radio.c
index c4312fa0e2f..c7c9d1dc069 100644
--- a/drivers/media/radio/miropcm20-radio.c
+++ b/drivers/media/radio/miropcm20-radio.c
@@ -216,7 +216,7 @@ static struct pcm20_device pcm20_unit = {
 	.muted  = 1,
 };
 
-static struct file_operations pcm20_fops = {
+static const struct file_operations pcm20_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/miropcm20-rds.c b/drivers/media/radio/miropcm20-rds.c
index c1b1db65e66..c93490ec96b 100644
--- a/drivers/media/radio/miropcm20-rds.c
+++ b/drivers/media/radio/miropcm20-rds.c
@@ -105,7 +105,7 @@ static ssize_t rds_f_read(struct file *file, char __user *buffer, size_t length,
 	}
 }
 
-static struct file_operations rds_fops = {
+static const struct file_operations rds_fops = {
 	.owner		= THIS_MODULE,
 	.read		= rds_f_read,
 	.open		= rds_f_open,
diff --git a/drivers/media/radio/radio-aimslab.c b/drivers/media/radio/radio-aimslab.c
index 3368a89bfad..b2e88ad2897 100644
--- a/drivers/media/radio/radio-aimslab.c
+++ b/drivers/media/radio/radio-aimslab.c
@@ -358,7 +358,7 @@ static int rt_ioctl(struct inode *inode, struct file *file,
 
 static struct rt_device rtrack_unit;
 
-static struct file_operations rtrack_fops = {
+static const struct file_operations rtrack_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/radio-aztech.c b/drivers/media/radio/radio-aztech.c
index 3ba5fa8cf7e..19d45cc940b 100644
--- a/drivers/media/radio/radio-aztech.c
+++ b/drivers/media/radio/radio-aztech.c
@@ -314,7 +314,7 @@ static int az_ioctl(struct inode *inode, struct file *file,
 
 static struct az_device aztech_unit;
 
-static struct file_operations aztech_fops = {
+static const struct file_operations aztech_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/radio-cadet.c b/drivers/media/radio/radio-cadet.c
index 69d4b7919c5..8fbf0d8bd27 100644
--- a/drivers/media/radio/radio-cadet.c
+++ b/drivers/media/radio/radio-cadet.c
@@ -507,7 +507,7 @@ cadet_poll(struct file *file, struct poll_table_struct *wait)
 }
 
 
-static struct file_operations cadet_fops = {
+static const struct file_operations cadet_fops = {
 	.owner		= THIS_MODULE,
 	.open		= cadet_open,
 	.release       	= cadet_release,
diff --git a/drivers/media/radio/radio-gemtek-pci.c b/drivers/media/radio/radio-gemtek-pci.c
index eb14106f66f..05e5aa77025 100644
--- a/drivers/media/radio/radio-gemtek-pci.c
+++ b/drivers/media/radio/radio-gemtek-pci.c
@@ -346,7 +346,7 @@ MODULE_DEVICE_TABLE( pci, gemtek_pci_id );
 
 static int mx = 1;
 
-static struct file_operations gemtek_pci_fops = {
+static const struct file_operations gemtek_pci_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/radio-gemtek.c b/drivers/media/radio/radio-gemtek.c
index 730fe16126c..36c4be6622c 100644
--- a/drivers/media/radio/radio-gemtek.c
+++ b/drivers/media/radio/radio-gemtek.c
@@ -296,7 +296,7 @@ static int gemtek_ioctl(struct inode *inode, struct file *file,
 
 static struct gemtek_device gemtek_unit;
 
-static struct file_operations gemtek_fops = {
+static const struct file_operations gemtek_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/radio-maestro.c b/drivers/media/radio/radio-maestro.c
index e8ce5f75cf1..9bba6eb1092 100644
--- a/drivers/media/radio/radio-maestro.c
+++ b/drivers/media/radio/radio-maestro.c
@@ -99,7 +99,7 @@ static struct pci_driver maestro_r_driver = {
 	.remove		= __devexit_p(maestro_remove),
 };
 
-static struct file_operations maestro_fops = {
+static const struct file_operations maestro_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/radio-maxiradio.c b/drivers/media/radio/radio-maxiradio.c
index c2eeae7a10d..00a2f31d2af 100644
--- a/drivers/media/radio/radio-maxiradio.c
+++ b/drivers/media/radio/radio-maxiradio.c
@@ -91,7 +91,7 @@ module_param(radio_nr, int, 0);
 static int radio_ioctl(struct inode *inode, struct file *file,
 		       unsigned int cmd, unsigned long arg);
 
-static struct file_operations maxiradio_fops = {
+static const struct file_operations maxiradio_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/radio-rtrack2.c b/drivers/media/radio/radio-rtrack2.c
index b9e98483e58..f6683872251 100644
--- a/drivers/media/radio/radio-rtrack2.c
+++ b/drivers/media/radio/radio-rtrack2.c
@@ -262,7 +262,7 @@ static int rt_ioctl(struct inode *inode, struct file *file,
 
 static struct rt_device rtrack2_unit;
 
-static struct file_operations rtrack2_fops = {
+static const struct file_operations rtrack2_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/radio-sf16fmi.c b/drivers/media/radio/radio-sf16fmi.c
index ecc854b4ba3..f4619e4dda4 100644
--- a/drivers/media/radio/radio-sf16fmi.c
+++ b/drivers/media/radio/radio-sf16fmi.c
@@ -265,7 +265,7 @@ static int fmi_ioctl(struct inode *inode, struct file *file,
 
 static struct fmi_device fmi_unit;
 
-static struct file_operations fmi_fops = {
+static const struct file_operations fmi_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/radio-sf16fmr2.c b/drivers/media/radio/radio-sf16fmr2.c
index 4444dce864a..b96fafe1f9d 100644
--- a/drivers/media/radio/radio-sf16fmr2.c
+++ b/drivers/media/radio/radio-sf16fmr2.c
@@ -410,7 +410,7 @@ static int fmr2_ioctl(struct inode *inode, struct file *file,
 
 static struct fmr2_device fmr2_unit;
 
-static struct file_operations fmr2_fops = {
+static const struct file_operations fmr2_fops = {
 	.owner          = THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/radio-terratec.c b/drivers/media/radio/radio-terratec.c
index f539491a0d7..d59a27accb8 100644
--- a/drivers/media/radio/radio-terratec.c
+++ b/drivers/media/radio/radio-terratec.c
@@ -338,7 +338,7 @@ static int tt_ioctl(struct inode *inode, struct file *file,
 
 static struct tt_device terratec_unit;
 
-static struct file_operations terratec_fops = {
+static const struct file_operations terratec_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/radio-trust.c b/drivers/media/radio/radio-trust.c
index bb03ad5a203..6d7f1e7116e 100644
--- a/drivers/media/radio/radio-trust.c
+++ b/drivers/media/radio/radio-trust.c
@@ -325,7 +325,7 @@ static int tr_ioctl(struct inode *inode, struct file *file,
 	return video_usercopy(inode, file, cmd, arg, tr_do_ioctl);
 }
 
-static struct file_operations trust_fops = {
+static const struct file_operations trust_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/radio-typhoon.c b/drivers/media/radio/radio-typhoon.c
index 4a72b4d4e62..3031fef178c 100644
--- a/drivers/media/radio/radio-typhoon.c
+++ b/drivers/media/radio/radio-typhoon.c
@@ -318,7 +318,7 @@ static struct typhoon_device typhoon_unit =
 	.mutefreq	= CONFIG_RADIO_TYPHOON_MUTEFREQ,
 };
 
-static struct file_operations typhoon_fops = {
+static const struct file_operations typhoon_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/radio/radio-zoltrix.c b/drivers/media/radio/radio-zoltrix.c
index 671fe1b1e5b..ec08491fb7c 100644
--- a/drivers/media/radio/radio-zoltrix.c
+++ b/drivers/media/radio/radio-zoltrix.c
@@ -373,7 +373,7 @@ static int zol_ioctl(struct inode *inode, struct file *file,
 
 static struct zol_device zoltrix_unit;
 
-static struct file_operations zoltrix_fops =
+static const struct file_operations zoltrix_fops =
 {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
diff --git a/drivers/media/video/arv.c b/drivers/media/video/arv.c
index 4861799eb43..649f52f9ad2 100644
--- a/drivers/media/video/arv.c
+++ b/drivers/media/video/arv.c
@@ -742,7 +742,7 @@ void ar_release(struct video_device *vfd)
  * Video4Linux Module functions
  *
  ****************************************************************************/
-static struct file_operations ar_fops = {
+static const struct file_operations ar_fops = {
 	.owner		= THIS_MODULE,
 	.open		= video_exclusive_open,
 	.release	= video_exclusive_release,
diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index ab8f970760f..41fd09d7d11 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/drivers/media/video/bt8xx/bttv-driver.c
@@ -3174,7 +3174,7 @@ bttv_mmap(struct file *file, struct vm_area_struct *vma)
 	return videobuf_mmap_mapper(bttv_queue(fh),vma);
 }
 
-static struct file_operations bttv_fops =
+static const struct file_operations bttv_fops =
 {
 	.owner	  = THIS_MODULE,
 	.open	  = bttv_open,
@@ -3332,7 +3332,7 @@ static unsigned int radio_poll(struct file *file, poll_table *wait)
 	return cmd.result;
 }
 
-static struct file_operations radio_fops =
+static const struct file_operations radio_fops =
 {
 	.owner	  = THIS_MODULE,
 	.open	  = radio_open,
diff --git a/drivers/media/video/bw-qcam.c b/drivers/media/video/bw-qcam.c
index 7d0b6e59c6e..7d47cbe6ad2 100644
--- a/drivers/media/video/bw-qcam.c
+++ b/drivers/media/video/bw-qcam.c
@@ -871,7 +871,7 @@ static ssize_t qcam_read(struct file *file, char __user *buf,
 	return len;
 }
 
-static struct file_operations qcam_fops = {
+static const struct file_operations qcam_fops = {
 	.owner		= THIS_MODULE,
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
diff --git a/drivers/media/video/c-qcam.c b/drivers/media/video/c-qcam.c
index a3989bd2f81..925ff17efbb 100644
--- a/drivers/media/video/c-qcam.c
+++ b/drivers/media/video/c-qcam.c
@@ -684,7 +684,7 @@ static ssize_t qcam_read(struct file *file, char __user *buf,
 }
 
 /* video device template */
-static struct file_operations qcam_fops = {
+static const struct file_operations qcam_fops = {
 	.owner		= THIS_MODULE,