[PATCH] mark struct file_operations const 3

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.

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>

58 files changed, 83 insertions, 83 deletions

diff --git a/block/blktrace.c b/block/blktrace.c
index d36b32ed22f..3f0e7c37c05 100644
--- a/block/blktrace.c
+++ b/block/blktrace.c
@@ -264,7 +264,7 @@ static ssize_t blk_dropped_read(struct file *filp, char __user *buffer,
 	return simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
 }
 
-static struct file_operations blk_dropped_fops = {
+static const struct file_operations blk_dropped_fops = {
 	.owner =	THIS_MODULE,
 	.open =		blk_dropped_open,
 	.read =		blk_dropped_read,
diff --git a/crypto/proc.c b/crypto/proc.c
index dabce0676f6..102c751a124 100644
--- a/crypto/proc.c
+++ b/crypto/proc.c
@@ -101,7 +101,7 @@ static int crypto_info_open(struct inode *inode, struct file *file)
 	return seq_open(file, &crypto_seq_ops);
 }
         
-static struct file_operations proc_crypto_ops = {
+static const struct file_operations proc_crypto_ops = {
 	.open		= crypto_info_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/drivers/acorn/char/i2c.c b/drivers/acorn/char/i2c.c
index 9e584a7af43..157d8b73bb6 100644
--- a/drivers/acorn/char/i2c.c
+++ b/drivers/acorn/char/i2c.c
@@ -238,7 +238,7 @@ static int rtc_ioctl(struct inode *inode, struct file *file,
 	return -EINVAL;
 }
 
-static struct file_operations rtc_fops = {
+static const struct file_operations rtc_fops = {
 	.ioctl	= rtc_ioctl,
 };
 
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index 7b2fa3d8f61..92bf868ca05 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -7024,7 +7024,7 @@ static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
   return -EINVAL;
 }
 
-static struct file_operations DAC960_gam_fops = {
+static const struct file_operations DAC960_gam_fops = {
 	.owner		= THIS_MODULE,
 	.ioctl		= DAC960_gam_ioctl
 };
diff --git a/drivers/block/acsi_slm.c b/drivers/block/acsi_slm.c
index e04be94d195..e2e04329096 100644
--- a/drivers/block/acsi_slm.c
+++ b/drivers/block/acsi_slm.c
@@ -269,7 +269,7 @@ static int slm_get_pagesize( int device, int *w, int *h );
 
 static DEFINE_TIMER(slm_timer, slm_test_ready, 0, 0);
 
-static struct file_operations slm_fops = {
+static const struct file_operations slm_fops = {
 	.owner =	THIS_MODULE,
 	.read =		slm_read,
 	.write =	slm_write,
diff --git a/drivers/block/aoe/aoechr.c b/drivers/block/aoe/aoechr.c
index e22b4c9520a..39e563ea087 100644
--- a/drivers/block/aoe/aoechr.c
+++ b/drivers/block/aoe/aoechr.c
@@ -233,7 +233,7 @@ loop:
 	}
 }
 
-static struct file_operations aoe_fops = {
+static const struct file_operations aoe_fops = {
 	.write = aoechr_write,
 	.read = aoechr_read,
 	.open = aoechr_open,
diff --git a/drivers/block/paride/pg.c b/drivers/block/paride/pg.c
index 9970aedbb5d..d89e7d32a3b 100644
--- a/drivers/block/paride/pg.c
+++ b/drivers/block/paride/pg.c
@@ -227,7 +227,7 @@ static struct class *pg_class;
 
 /* kernel glue structures */
 
-static struct file_operations pg_fops = {
+static const struct file_operations pg_fops = {
 	.owner = THIS_MODULE,
 	.read = pg_read,
 	.write = pg_write,
diff --git a/drivers/block/paride/pt.c b/drivers/block/paride/pt.c
index c902b25e486..9f4e67ee1eb 100644
--- a/drivers/block/paride/pt.c
+++ b/drivers/block/paride/pt.c
@@ -232,7 +232,7 @@ static char pt_scratch[512];	/* scratch block buffer */
 
 /* kernel glue structures */
 
-static struct file_operations pt_fops = {
+static const struct file_operations pt_fops = {
 	.owner = THIS_MODULE,
 	.read = pt_read,
 	.write = pt_write,
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index c0e89490e3d..93fb6ed4ed5 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -435,7 +435,7 @@ static int pkt_debugfs_fops_open(struct inode *inode, struct file *file)
 	return single_open(file, pkt_debugfs_seq_show, inode->i_private);
 }
 
-static struct file_operations debug_fops = {
+static const struct file_operations debug_fops = {
 	.open		= pkt_debugfs_fops_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -2725,7 +2725,7 @@ static int pkt_seq_open(struct inode *inode, struct file *file)
 	return single_open(file, pkt_seq_show, PDE(inode)->data);
 }
 
-static struct file_operations pkt_proc_fops = {
+static const struct file_operations pkt_proc_fops = {
 	.open	= pkt_seq_open,
 	.read	= seq_read,
 	.llseek	= seq_lseek,
@@ -3052,7 +3052,7 @@ static int pkt_ctl_ioctl(struct inode *inode, struct file *file, unsigned int cm
 }
 
 
-static struct file_operations pkt_ctl_fops = {
+static const struct file_operations pkt_ctl_fops = {
 	.ioctl	 = pkt_ctl_ioctl,
 	.owner	 = THIS_MODULE,
 };
diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c
index a278d98a915..b71a5ccc587 100644
--- a/drivers/bluetooth/hci_vhci.c
+++ b/drivers/bluetooth/hci_vhci.c
@@ -332,7 +332,7 @@ static int vhci_fasync(int fd, struct file *file, int on)
 	return 0;
 }
 
-static struct file_operations vhci_fops = {
+static const struct file_operations vhci_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= vhci_llseek,
 	.read		= vhci_read,
diff --git a/drivers/cdrom/viocd.c b/drivers/cdrom/viocd.c
index 93fbf84dcc4..dc13ebacedf 100644
--- a/drivers/cdrom/viocd.c
+++ b/drivers/cdrom/viocd.c
@@ -176,7 +176,7 @@ static int proc_viocd_open(struct inode *inode, struct file *file)
 	return single_open(file, proc_viocd_show, NULL);
 }
 
-static struct file_operations proc_viocd_operations = {
+static const struct file_operations proc_viocd_operations = {
 	.open		= proc_viocd_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/drivers/char/briq_panel.c b/drivers/char/briq_panel.c
index 9f8082f8dd2..7f60a18ef76 100644
--- a/drivers/char/briq_panel.c
+++ b/drivers/char/briq_panel.c
@@ -187,7 +187,7 @@ static ssize_t briq_panel_write(struct file *file, const char __user *buf, size_
 	return len;
 }
 
-static struct file_operations briq_panel_fops = {
+static const struct file_operations briq_panel_fops = {
 	.owner		= THIS_MODULE,
 	.read		= briq_panel_read,
 	.write		= briq_panel_write,
diff --git a/drivers/char/drm/drm_drv.c b/drivers/char/drm/drm_drv.c
index a70af0de445..f5b9b2480c1 100644
--- a/drivers/char/drm/drm_drv.c
+++ b/drivers/char/drm/drm_drv.c
@@ -371,7 +371,7 @@ void drm_exit(struct drm_driver *driver)
 EXPORT_SYMBOL(drm_exit);
 
 /** File operations structure */
-static struct file_operations drm_stub_fops = {
+static const struct file_operations drm_stub_fops = {
 	.owner = THIS_MODULE,
 	.open = drm_stub_open
 };
diff --git a/drivers/char/drm/i810_dma.c b/drivers/char/drm/i810_dma.c
index 60cb4e45a75..603d17fd2d6 100644
--- a/drivers/char/drm/i810_dma.c
+++ b/drivers/char/drm/i810_dma.c
@@ -112,7 +112,7 @@ static int i810_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
 	return 0;
 }
 
-static struct file_operations i810_buffer_fops = {
+static const struct file_operations i810_buffer_fops = {
 	.open = drm_open,
 	.release = drm_release,
 	.ioctl = drm_ioctl,
diff --git a/drivers/char/drm/i830_dma.c b/drivers/char/drm/i830_dma.c
index 95224455ec0..3314a9fea9e 100644
--- a/drivers/char/drm/i830_dma.c
+++ b/drivers/char/drm/i830_dma.c
@@ -114,7 +114,7 @@ static int i830_mmap_buffers(struct file *filp, struct vm_area_struct *vma)
 	return 0;
 }
 
-static struct file_operations i830_buffer_fops = {
+static const struct file_operations i830_buffer_fops = {
 	.open = drm_open,
 	.release = drm_release,
 	.ioctl = drm_ioctl,
diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c
index 43ff5981651..2398e864c28 100644
--- a/drivers/char/generic_nvram.c
+++ b/drivers/char/generic_nvram.c
@@ -117,7 +117,7 @@ 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/char/mbcs.c b/drivers/char/mbcs.c
index 0afb7ba999c..57f9115a456 100644
--- a/drivers/char/mbcs.c
+++ b/drivers/char/mbcs.c
@@ -46,7 +46,7 @@ LIST_HEAD(soft_list);
 /*
  * file operations
  */
-struct file_operations mbcs_ops = {
+const struct file_operations mbcs_ops = {
 	.open = mbcs_open,
 	.llseek = mbcs_sram_llseek,
 	.read = mbcs_sram_read,
diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index 235e8922611..7ac30612068 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -291,7 +291,7 @@ uncached_mmap(struct file *file, struct vm_area_struct *vma)
 	return mspec_mmap(file, vma, MSPEC_UNCACHED);
 }
 
-static struct file_operations fetchop_fops = {
+static const struct file_operations fetchop_fops = {
 	.owner = THIS_MODULE,
 	.mmap = fetchop_mmap
 };
@@ -302,7 +302,7 @@ static struct miscdevice fetchop_miscdev = {
 	.fops = &fetchop_fops
 };
 
-static struct file_operations cached_fops = {
+static const struct file_operations cached_fops = {
 	.owner = THIS_MODULE,
 	.mmap = cached_mmap
 };
@@ -313,7 +313,7 @@ static struct miscdevice cached_miscdev = {
 	.fops = &cached_fops
 };
 
-static struct file_operations uncached_fops = {
+static const struct file_operations uncached_fops = {
 	.owner = THIS_MODULE,
 	.mmap = uncached_mmap
 };
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 13d0b1350a6..b9dc7aa1dfb 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1117,14 +1117,14 @@ random_ioctl(struct inode * inode, struct file * file,
 	}
 }
 
-struct file_operations random_fops = {
+const struct file_operations random_fops = {
 	.read  = random_read,
 	.write = random_write,
 	.poll  = random_poll,
 	.ioctl = random_ioctl,
 };
 
-struct file_operations urandom_fops = {
+const struct file_operations urandom_fops = {
 	.read  = urandom_read,
 	.write = random_write,
 	.ioctl = random_ioctl,
diff --git a/drivers/char/tpm/tpm_bios.c b/drivers/char/tpm/tpm_bios.c
index 7fca5f470be..4eba32b23b2 100644
--- a/drivers/char/tpm/tpm_bios.c
+++ b/drivers/char/tpm/tpm_bios.c
@@ -441,7 +441,7 @@ static int tpm_ascii_bios_measurements_open(struct inode *inode,
 	return err;
 }
 
-struct file_operations tpm_ascii_bios_measurements_ops = {
+const struct file_operations tpm_ascii_bios_measurements_ops = {
 	.open = tpm_ascii_bios_measurements_open,
 	.read = seq_read,
 	.llseek = seq_lseek,
@@ -474,7 +474,7 @@ static int tpm_binary_bios_measurements_open(struct inode *inode,
 	return err;
 }
 
-struct file_operations tpm_binary_bios_measurements_ops = {
+const struct file_operations tpm_binary_bios_measurements_ops = {
 	.open = tpm_binary_bios_measurements_open,
 	.read = seq_read,
 	.llseek = seq_lseek,
diff --git a/drivers/char/viotape.c b/drivers/char/viotape.c
index 9438512b17f..13faf8d1748 100644
--- a/drivers/char/viotape.c
+++ b/drivers/char/viotape.c
@@ -872,7 +872,7 @@ free_op:
 	return ret;
 }
 
-struct file_operations viotap_fops = {
+const struct file_operations viotap_fops = {
 	owner: THIS_MODULE,
 	read: viotap_read,
 	write: viotap_write,
diff --git a/drivers/char/watchdog/iTCO_wdt.c b/drivers/char/watchdog/iTCO_wdt.c
index 7eac922df86..fd8a44a08cd 100644
--- a/drivers/char/watchdog/iTCO_wdt.c
+++ b/drivers/char/watchdog/iTCO_wdt.c
@@ -539,7 +539,7 @@ static int iTCO_wdt_ioctl (struct inode *inode, struct file *file,
  *	Kernel Interfaces
  */
 
-static struct file_operations iTCO_wdt_fops = {
+static const struct file_operations iTCO_wdt_fops = {
 	.owner =	THIS_MODULE,
 	.llseek =	no_llseek,
 	.write =	iTCO_wdt_write,
diff --git a/drivers/char/watchdog/omap_wdt.c b/drivers/char/watchdog/omap_wdt.c
index 6c6f97332db..84074a697dc 100644
--- a/drivers/char/watchdog/omap_wdt.c
+++ b/drivers/char/watchdog/omap_wdt.c
@@ -230,7 +230,7 @@ omap_wdt_ioctl(struct inode *inode, struct file *file,
 	}
 }
 
-static struct file_operations omap_wdt_fops = {
+static const struct file_operations omap_wdt_fops = {
 	.owner = THIS_MODULE,
 	.write = omap_wdt_write,
 	.ioctl = omap_wdt_ioctl,
diff --git a/drivers/char/watchdog/pc87413_wdt.c b/drivers/char/watchdog/pc87413_wdt.c
index 1d447e32af4..a77a90717ad 100644
--- a/drivers/char/watchdog/pc87413_wdt.c
+++ b/drivers/char/watchdog/pc87413_wdt.c
@@ -526,7 +526,7 @@ static int pc87413_notify_sys(struct notifier_block *this,
 
 /* -- Module's structures ---------------------------------------*/
 
-static struct file_operations pc87413_fops = {
+static const struct file_operations pc87413_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.write		= pc87413_write,
diff --git a/drivers/char/watchdog/pnx4008_wdt.c b/drivers/char/watchdog/pnx4008_wdt.c
index 3a55fc6abcd..ff6f1ca1e5e 100644
--- a/drivers/char/watchdog/pnx4008_wdt.c
+++ b/drivers/char/watchdog/pnx4008_wdt.c
@@ -238,7 +238,7 @@ static int pnx4008_wdt_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static struct file_operations pnx4008_wdt_fops = {
+static const struct file_operations pnx4008_wdt_fops = {
 	.owner = THIS_MODULE,
 	.llseek = no_llseek,
 	.write = pnx4008_wdt_write,
diff --git a/drivers/char/watchdog/rm9k_wdt.c b/drivers/char/watchdog/rm9k_wdt.c
index 7576a13e86b..b4678839d3b 100644
--- a/drivers/char/watchdog/rm9k_wdt.c
+++ b/drivers/char/watchdog/rm9k_wdt.c
@@ -95,7 +95,7 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be disabled once started");
 
 
 /* Kernel interfaces */
-static struct file_operations fops = {
+static const struct file_operations fops = {
 	.owner		= THIS_MODULE,
 	.open		= wdt_gpi_open,
 	.release	= wdt_gpi_release,
diff --git a/drivers/char/watchdog/smsc37b787_wdt.c b/drivers/char/watchdog/smsc37b787_wdt.c
index 9f56913b484..a9681d580dd 100644
--- a/drivers/char/watchdog/smsc37b787_wdt.c
+++ b/drivers/char/watchdog/smsc37b787_wdt.c
@@ -510,7 +510,7 @@ static int wb_smsc_wdt_notify_sys(struct notifier_block *this, unsigned long cod
 
 /* -- Module's structures ---------------------------------------*/
 
-static struct file_operations wb_smsc_wdt_fops =
+static const struct file_operations wb_smsc_wdt_fops =
 {
 	.owner          = THIS_MODULE,
 	.llseek		= no_llseek,
diff --git a/drivers/char/watchdog/w83697hf_wdt.c b/drivers/char/watchdog/w83697hf_wdt.c
index 7768b55487c..c960ec110dd 100644
--- a/drivers/char/watchdog/w83697hf_wdt.c
+++ b/drivers/char/watchdog/w83697hf_wdt.c
@@ -323,7 +323,7 @@ wdt_notify_sys(struct notifier_block *this, unsigned long code,
  *	Kernel Interfaces
  */
 
-static struct file_operations wdt_fops = {
+static const struct file_operations wdt_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.write		= wdt_write,
diff --git a/drivers/i2c/chips/tps65010.c b/drivers/i2c/chips/tps65010.c
index 4ee56def61f..214fbb1423c 100644
--- a/drivers/i2c/chips/tps65010.c
+++ b/drivers/i2c/chips/tps65010.c
@@ -308,7 +308,7 @@ static int dbg_tps_open(struct inode *inode, struct file *file)
 	return single_open(file, dbg_show, inode->i_private);
 }
 
-static struct file_operations debug_fops = {
+static const struct file_operations debug_fops = {
 	.open		= dbg_tps_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index ac5bd2a7ca9..cb4fa9bef8c 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -392,7 +392,7 @@ static int i2cdev_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static struct file_operations i2cdev_fops = {
+static const struct file_operations i2cdev_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.read		= i2cdev_read,
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index ad49bd823eb..30a5780f418 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -548,7 +548,7 @@ static int ide_drivers_open(struct inode *inode, struct file *file)
 	return single_open(file, &ide_drivers_show, NULL);
 }
 
-static struct file_operations ide_drivers_operations = {
+static const struct file_operations ide_drivers_operations = {
 	.open		= ide_drivers_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index b3bcd1d7315..c6eec0413a6 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -4779,7 +4779,7 @@ static ide_driver_t idetape_driver = {
 /*
  *	Our character device supporting functions, passed to register_chrdev.
  */
-static struct file_operations idetape_fops = {
+static const struct file_operations idetape_fops = {
 	.owner		= THIS_MODULE,
 	.read		= idetape_chrdev_read,
 	.write		= idetape_chrdev_write,
diff --git a/drivers/ieee1394/dv1394.c b/drivers/ieee1394/dv1394.c
index 55d6ae664fd..dee9529aa8e 100644
--- a/drivers/ieee1394/dv1394.c
+++ b/drivers/ieee1394/dv1394.c
@@ -2147,7 +2147,7 @@ out:
 }
 
 static struct cdev dv1394_cdev;
-static struct file_operations dv1394_fops=
+static const struct file_operations dv1394_fops=
 {
 	.owner =	THIS_MODULE,
 	.poll =         dv1394_poll,
diff --git a/drivers/ieee1394/raw1394.c b/drivers/ieee1394/raw1394.c
index a77a832828c..aa9ca8385ec 100644
--- a/drivers/ieee1394/raw1394.c
+++ b/drivers/ieee1394/raw1394.c
@@ -3013,7 +3013,7 @@ static struct hpsb_highlevel raw1394_highlevel = {
 };
 
 static struct cdev raw1394_cdev;
-static struct file_operations raw1394_fops = {
+static const struct file_operations raw1394_fops = {
 	.owner = THIS_MODULE,
 	.read = raw1394_read,
 	.write = raw1394_write,
diff --git a/drivers/ieee1394/video1394.c b/drivers/ieee1394/video1394.c
index f4d1ec00af6..95ca26d7527 100644
--- a/drivers/ieee1394/video1394.c
+++ b/drivers/ieee1394/video1394.c
@@ -1277,7 +1277,7 @@ static long video1394_compat_ioctl(struct file *f, unsigned cmd, unsigned long a
 #endif
 
 static struct cdev video1394_cdev;
-static struct file_operations vide