[PATCH] mark struct file_operations const 2

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@osdl.org: sparc64 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>

59 files changed, 94 insertions, 94 deletions

diff --git a/arch/arm/common/rtctime.c b/arch/arm/common/rtctime.c
index 4e5445cfb0e..bf1075e1f57 100644
--- a/arch/arm/common/rtctime.c
+++ b/arch/arm/common/rtctime.c
@@ -329,7 +329,7 @@ static int rtc_fasync(int fd, struct file *file, int on)
 	return fasync_helper(fd, file, on, &rtc_async_queue);
 }
 
-static struct file_operations rtc_fops = {
+static const struct file_operations rtc_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.read		= rtc_read,
diff --git a/arch/arm/mach-at91rm9200/clock.c b/arch/arm/mach-at91rm9200/clock.c
index 4dee21fefe5..36a8e4d1cc6 100644
--- a/arch/arm/mach-at91rm9200/clock.c
+++ b/arch/arm/mach-at91rm9200/clock.c
@@ -407,7 +407,7 @@ static int at91_clk_open(struct inode *inode, struct file *file)
 	return single_open(file, at91_clk_show, NULL);
 }
 
-static struct file_operations at91_clk_operations = {
+static const struct file_operations at91_clk_operations = {
 	.open		= at91_clk_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/arch/avr32/mm/tlb.c b/arch/avr32/mm/tlb.c
index 7b073052203..56672018e42 100644
--- a/arch/avr32/mm/tlb.c
+++ b/arch/avr32/mm/tlb.c
@@ -360,7 +360,7 @@ static int tlb_open(struct inode *inode, struct file *file)
 	return seq_open(file, &tlb_ops);
 }
 
-static struct file_operations proc_tlb_operations = {
+static const struct file_operations proc_tlb_operations = {
 	.open		= tlb_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/arch/cris/arch-v10/drivers/ds1302.c b/arch/cris/arch-v10/drivers/ds1302.c
index 3cf4f23de1d..88eff7f54ea 100644
--- a/arch/cris/arch-v10/drivers/ds1302.c
+++ b/arch/cris/arch-v10/drivers/ds1302.c
@@ -499,7 +499,7 @@ print_rtc_status(void)
 
 /* The various file operations we support. */
 
-static struct file_operations rtc_fops = {
+static const struct file_operations rtc_fops = {
 	.owner =	THIS_MODULE,
 	.ioctl =	rtc_ioctl,
 }; 
diff --git a/arch/cris/arch-v10/drivers/eeprom.c b/arch/cris/arch-v10/drivers/eeprom.c
index 284ebfda03f..be35a70798a 100644
--- a/arch/cris/arch-v10/drivers/eeprom.c
+++ b/arch/cris/arch-v10/drivers/eeprom.c
@@ -172,7 +172,7 @@ static const char eeprom_name[] = "eeprom";
 static struct eeprom_type eeprom;
 
 /* This is the exported file-operations structure for this device. */
-struct file_operations eeprom_fops =
+const struct file_operations eeprom_fops =
 {
   .llseek  = eeprom_lseek,
   .read    = eeprom_read,
diff --git a/arch/cris/arch-v10/drivers/gpio.c b/arch/cris/arch-v10/drivers/gpio.c
index 9aba18b931d..f389ed6998f 100644
--- a/arch/cris/arch-v10/drivers/gpio.c
+++ b/arch/cris/arch-v10/drivers/gpio.c
@@ -838,7 +838,7 @@ gpio_leds_ioctl(unsigned int cmd, unsigned long arg)
 	return 0;
 }
 
-struct file_operations gpio_fops = {
+const struct file_operations gpio_fops = {
 	.owner       = THIS_MODULE,
 	.poll        = gpio_poll,
 	.ioctl       = gpio_ioctl,
diff --git a/arch/cris/arch-v10/drivers/i2c.c b/arch/cris/arch-v10/drivers/i2c.c
index 092c724a645..aca81ddaf60 100644
--- a/arch/cris/arch-v10/drivers/i2c.c
+++ b/arch/cris/arch-v10/drivers/i2c.c
@@ -692,7 +692,7 @@ i2c_ioctl(struct inode *inode, struct file *file,
 	return 0;
 }
 
-static struct file_operations i2c_fops = {
+static const struct file_operations i2c_fops = {
 	.owner    = THIS_MODULE,
 	.ioctl    = i2c_ioctl,
 	.open     = i2c_open,
diff --git a/arch/cris/arch-v10/drivers/pcf8563.c b/arch/cris/arch-v10/drivers/pcf8563.c
index 8c830eefc89..107796e5014 100644
--- a/arch/cris/arch-v10/drivers/pcf8563.c
+++ b/arch/cris/arch-v10/drivers/pcf8563.c
@@ -56,7 +56,7 @@ static const unsigned char days_in_month[] =
 
 int pcf8563_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
 
-static struct file_operations pcf8563_fops = {
+static const struct file_operations pcf8563_fops = {
 	.owner = THIS_MODULE,
 	.ioctl = pcf8563_ioctl,
 };
diff --git a/arch/cris/arch-v32/drivers/cryptocop.c b/arch/cris/arch-v32/drivers/cryptocop.c
index 2449637e6fc..1a071f17446 100644
--- a/arch/cris/arch-v32/drivers/cryptocop.c
+++ b/arch/cris/arch-v32/drivers/cryptocop.c
@@ -266,7 +266,7 @@ static void print_user_dma_lists(struct cryptocop_dma_list_operation *dma_op);
 
 
 
-struct file_operations cryptocop_fops = {
+const struct file_operations cryptocop_fops = {
 	owner: THIS_MODULE,
 	open: cryptocop_open,
 	release: cryptocop_release,
diff --git a/arch/cris/arch-v32/drivers/gpio.c b/arch/cris/arch-v32/drivers/gpio.c
index 08d36f0955c..d82c5c56113 100644
--- a/arch/cris/arch-v32/drivers/gpio.c
+++ b/arch/cris/arch-v32/drivers/gpio.c
@@ -705,7 +705,7 @@ gpio_leds_ioctl(unsigned int cmd, unsigned long arg)
 	return 0;
 }
 
-struct file_operations gpio_fops = {
+const struct file_operations gpio_fops = {
 	.owner       = THIS_MODULE,
 	.poll        = gpio_poll,
 	.ioctl       = gpio_ioctl,
diff --git a/arch/cris/arch-v32/drivers/i2c.c b/arch/cris/arch-v32/drivers/i2c.c
index 95f00188c62..5d6c52737df 100644
--- a/arch/cris/arch-v32/drivers/i2c.c
+++ b/arch/cris/arch-v32/drivers/i2c.c
@@ -573,7 +573,7 @@ i2c_ioctl(struct inode *inode, struct file *file,
 	return 0;
 }
 
-static struct file_operations i2c_fops = {
+static const struct file_operations i2c_fops = {
 	owner:    THIS_MODULE,
 	ioctl:    i2c_ioctl,
 	open:     i2c_open,
diff --git a/arch/cris/arch-v32/drivers/pcf8563.c b/arch/cris/arch-v32/drivers/pcf8563.c
index 2fc7d75a35d..544ab017941 100644
--- a/arch/cris/arch-v32/drivers/pcf8563.c
+++ b/arch/cris/arch-v32/drivers/pcf8563.c
@@ -50,7 +50,7 @@ int pcf8563_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
 int pcf8563_open(struct inode *, struct file *);
 int pcf8563_release(struct inode *, struct file *);
 
-static struct file_operations pcf8563_fops = {
+static const struct file_operations pcf8563_fops = {
 	owner: THIS_MODULE,
 	ioctl: pcf8563_ioctl,
 	open: pcf8563_open,
diff --git a/arch/cris/arch-v32/drivers/sync_serial.c b/arch/cris/arch-v32/drivers/sync_serial.c
index 424eb0eb1cd..df89298aafc 100644
--- a/arch/cris/arch-v32/drivers/sync_serial.c
+++ b/arch/cris/arch-v32/drivers/sync_serial.c
@@ -187,7 +187,7 @@ static struct sync_port ports[]=
 
 #define NUMBER_OF_PORTS (sizeof(ports)/sizeof(sync_port))
 
-static struct file_operations sync_serial_fops = {
+static const struct file_operations sync_serial_fops = {
 	.owner   = THIS_MODULE,
 	.write   = sync_serial_write,
 	.read    = sync_serial_read,
diff --git a/arch/cris/kernel/profile.c b/arch/cris/kernel/profile.c
index f60ab785f23..4cfcae62050 100644
--- a/arch/cris/kernel/profile.c
+++ b/arch/cris/kernel/profile.c
@@ -50,7 +50,7 @@ write_cris_profile(struct file *file, const char __user *buf,
   memset(sample_buffer, 0, SAMPLE_BUFFER_SIZE);
 }
 
-static struct file_operations cris_proc_profile_operations = {
+static const struct file_operations cris_proc_profile_operations = {
 	.read		= read_cris_profile,
 	.write		= write_cris_profile,
 };
diff --git a/arch/i386/kernel/apm.c b/arch/i386/kernel/apm.c
index 19901692754..db99a8948da 100644
--- a/arch/i386/kernel/apm.c
+++ b/arch/i386/kernel/apm.c
@@ -1894,7 +1894,7 @@ static int __init apm_setup(char *str)
 __setup("apm=", apm_setup);
 #endif
 
-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/arch/i386/kernel/cpu/mtrr/if.c b/arch/i386/kernel/cpu/mtrr/if.c
index 5ae1705eafa..ee771f305f9 100644
--- a/arch/i386/kernel/cpu/mtrr/if.c
+++ b/arch/i386/kernel/cpu/mtrr/if.c
@@ -339,7 +339,7 @@ static int mtrr_open(struct inode *inode, struct file *file)
 	return single_open(file, mtrr_seq_show, NULL);
 }
 
-static struct file_operations mtrr_fops = {
+static const struct file_operations mtrr_fops = {
 	.owner   = THIS_MODULE,
 	.open	 = mtrr_open, 
 	.read    = seq_read,
diff --git a/arch/i386/kernel/cpuid.c b/arch/i386/kernel/cpuid.c
index 51130b39cd2..4da75fa3208 100644
--- a/arch/i386/kernel/cpuid.c
+++ b/arch/i386/kernel/cpuid.c
@@ -148,7 +148,7 @@ static int cpuid_open(struct inode *inode, struct file *file)
 /*
  * File operations we support
  */
-static struct file_operations cpuid_fops = {
+static const struct file_operations cpuid_fops = {
 	.owner = THIS_MODULE,
 	.llseek = cpuid_seek,
 	.read = cpuid_read,
diff --git a/arch/i386/kernel/microcode.c b/arch/i386/kernel/microcode.c
index c8fa13721bc..381252bae3d 100644
--- a/arch/i386/kernel/microcode.c
+++ b/arch/i386/kernel/microcode.c
@@ -451,7 +451,7 @@ static ssize_t microcode_write (struct file *file, const char __user *buf, size_
 	return ret;
 }
 
-static struct file_operations microcode_fops = {
+static const struct file_operations microcode_fops = {
 	.owner		= THIS_MODULE,
 	.write		= microcode_write,
 	.open		= microcode_open,
diff --git a/arch/i386/kernel/msr.c b/arch/i386/kernel/msr.c
index 4a472a17d1c..4e14264f392 100644
--- a/arch/i386/kernel/msr.c
+++ b/arch/i386/kernel/msr.c
@@ -230,7 +230,7 @@ static int msr_open(struct inode *inode, struct file *file)
 /*
  * File operations we support
  */
-static struct file_operations msr_fops = {
+static const struct file_operations msr_fops = {
 	.owner = THIS_MODULE,
 	.llseek = msr_seek,
 	.read = msr_read,
diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index ce49fe3a3b5..c1dca226b47 100644
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -1881,7 +1881,7 @@ ioc_open(struct inode *inode, struct file *file)
 	return seq_open(file, &ioc_seq_ops);
 }
 
-static struct file_operations ioc_fops = {
+static const struct file_operations ioc_fops = {
 	.open    = ioc_open,
 	.read    = seq_read,
 	.llseek  = seq_lseek,
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 86e144f321f..9860794a68f 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -621,7 +621,7 @@ EXPORT_PER_CPU_SYMBOL_GPL(pfm_syst_info);
 
 
 /* forward declaration */
-static struct file_operations pfm_file_ops;
+static const struct file_operations pfm_file_ops;
 
 /*
  * forward declarations
@@ -2126,7 +2126,7 @@ pfm_no_open(struct inode *irrelevant, struct file *dontcare)
 
 
 
-static struct file_operations pfm_file_ops = {
+static const struct file_operations pfm_file_ops = {
 	.llseek   = no_llseek,
 	.read     = pfm_read,
 	.write    = pfm_write,
@@ -6596,7 +6596,7 @@ found:
 	return 0;
 }
 
-static struct file_operations pfm_proc_fops = {
+static const struct file_operations pfm_proc_fops = {
 	.open		= pfm_proc_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/arch/ia64/kernel/salinfo.c b/arch/ia64/kernel/salinfo.c
index e375a2f0f2c..af9f8754d84 100644
--- a/arch/ia64/kernel/salinfo.c
+++ b/arch/ia64/kernel/salinfo.c
@@ -352,7 +352,7 @@ retry:
 	return size;
 }
 
-static struct file_operations salinfo_event_fops = {
+static const struct file_operations salinfo_event_fops = {
 	.open  = salinfo_event_open,
 	.read  = salinfo_event_read,
 };
@@ -568,7 +568,7 @@ salinfo_log_write(struct file *file, const char __user *buffer, size_t count, lo
 	return count;
 }
 
-static struct file_operations salinfo_data_fops = {
+static const struct file_operations salinfo_data_fops = {
 	.open    = salinfo_log_open,
 	.release = salinfo_log_release,
 	.read    = salinfo_log_read,
diff --git a/arch/ia64/sn/kernel/sn2/sn2_smp.c b/arch/ia64/sn/kernel/sn2/sn2_smp.c
index d9d306c79f2..601747b1e22 100644
--- a/arch/ia64/sn/kernel/sn2/sn2_smp.c
+++ b/arch/ia64/sn/kernel/sn2/sn2_smp.c
@@ -455,7 +455,7 @@ static int sn2_ptc_proc_open(struct inode *inode, struct file *file)
 	return seq_open(file, &sn2_ptc_seq_ops);
 }
 
-static struct file_operations proc_sn2_ptc_operations = {
+static const struct file_operations proc_sn2_ptc_operations = {
 	.open = sn2_ptc_proc_open,
 	.read = seq_read,
 	.llseek = seq_lseek,
diff --git a/arch/ia64/sn/kernel/sn2/sn_hwperf.c b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
index 33367996d72..6da9854751c 100644
--- a/arch/ia64/sn/kernel/sn2/sn_hwperf.c
+++ b/arch/ia64/sn/kernel/sn2/sn_hwperf.c
@@ -865,7 +865,7 @@ error:
 	return r;
 }
 
-static struct file_operations sn_hwperf_fops = {
+static const struct file_operations sn_hwperf_fops = {
 	.ioctl = sn_hwperf_ioctl,
 };
 
diff --git a/arch/m68k/bvme6000/rtc.c b/arch/m68k/bvme6000/rtc.c
index 15c16b62dff..a812d03879f 100644
--- a/arch/m68k/bvme6000/rtc.c
+++ b/arch/m68k/bvme6000/rtc.c
@@ -159,7 +159,7 @@ static int rtc_release(struct inode *inode, struct file *file)
  *	The various file operations we support.
  */
 
-static struct file_operations rtc_fops = {
+static const struct file_operations rtc_fops = {
 	.ioctl =	rtc_ioctl,
 	.open =		rtc_open,
 	.release =	rtc_release,
diff --git a/arch/m68k/mvme16x/rtc.c b/arch/m68k/mvme16x/rtc.c
index b0e4c084df8..272d47eac58 100644
--- a/arch/m68k/mvme16x/rtc.c
+++ b/arch/m68k/mvme16x/rtc.c
@@ -147,7 +147,7 @@ static int rtc_release(struct inode *inode, struct file *file)
  *	The various file operations we support.
  */
 
-static struct file_operations rtc_fops = {
+static const struct file_operations rtc_fops = {
 	.ioctl =	rtc_ioctl,
 	.open =		rtc_open,
 	.release =	rtc_release,
diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c
index f29e93c6ccf..d92c48e0d7a 100644
--- a/arch/mips/kernel/rtlx.c
+++ b/arch/mips/kernel/rtlx.c
@@ -478,7 +478,7 @@ static ssize_t file_write(struct file *file, const char __user * buffer,
 	return rtlx_write(minor, (void *)buffer, count, 1);
 }
 
-static struct file_operations rtlx_fops = {
+static const struct file_operations rtlx_fops = {
 	.owner =   THIS_MODULE,
 	.open =    file_open,
 	.release = file_release,
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 4e832da48c6..9aca871a307 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -1208,7 +1208,7 @@ static ssize_t vpe_write(struct file *file, const char __user * buffer,
 	return ret;
 }
 
-static struct file_operations vpe_fops = {
+static const struct file_operations vpe_fops = {
 	.owner = THIS_MODULE,
 	.open = vpe_open,
 	.release = vpe_release,
diff --git a/arch/mips/sibyte/sb1250/bcm1250_tbprof.c b/arch/mips/sibyte/sb1250/bcm1250_tbprof.c
index d1a906e683b..212547c5731 100644
--- a/arch/mips/sibyte/sb1250/bcm1250_tbprof.c
+++ b/arch/mips/sibyte/sb1250/bcm1250_tbprof.c
@@ -374,7 +374,7 @@ static long sbprof_tb_ioctl(struct file *filp,
 	return error;
 }
 
-static struct file_operations sbprof_tb_fops = {
+static const struct file_operations sbprof_tb_fops = {
 	.owner		= THIS_MODULE,
 	.open		= sbprof_tb_open,
 	.release	= sbprof_tb_release,
diff --git a/arch/parisc/kernel/perf.c b/arch/parisc/kernel/perf.c
index ac8ee205c35..a46bc62b643 100644
--- a/arch/parisc/kernel/perf.c
+++ b/arch/parisc/kernel/perf.c
@@ -479,7 +479,7 @@ static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	return error;
 }
 
-static struct file_operations perf_fops = {
+static const struct file_operations perf_fops = {
 	.llseek = no_llseek,
 	.read = perf_read,
 	.write = perf_write,
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 0de5a08cf9b..89486b63128 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -571,7 +571,7 @@ static int lparcfg_open(struct inode *inode, struct file *file)
 	return single_open(file, lparcfg_data, NULL);
 }
 
-struct file_operations lparcfg_fops = {
+const struct file_operations lparcfg_fops = {
 	.owner		= THIS_MODULE,
 	.read		= seq_read,
 	.write		= lparcfg_write,
diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c
index 869cebbba96..f9676f52c6d 100644
--- a/arch/powerpc/kernel/nvram_64.c
+++ b/arch/powerpc/kernel/nvram_64.c
@@ -179,7 +179,7 @@ static int dev_nvram_ioctl(struct inode *inode, struct file *file,
 	}
 }
 
-struct file_operations nvram_fops = {
+const struct file_operations nvram_fops = {
 	.owner =	THIS_MODULE,
 	.llseek =	dev_nvram_llseek,
 	.read =		dev_nvram_read,
diff --git a/arch/powerpc/kernel/proc_ppc64.c b/arch/powerpc/kernel/proc_ppc64.c
index 3d437c32546..f78dfce1b77 100644
--- a/arch/powerpc/kernel/proc_ppc64.c
+++ b/arch/powerpc/kernel/proc_ppc64.c
@@ -33,7 +33,7 @@ static ssize_t page_map_read( struct file *file, char __user *buf, size_t nbytes
 			      loff_t *ppos);
 static int     page_map_mmap( struct file *file, struct vm_area_struct *vma );
 
-static struct file_operations page_map_fops = {
+static const struct file_operations page_map_fops = {
 	.llseek	= page_map_seek,
 	.read	= page_map_read,
 	.mmap	= page_map_mmap
diff --git a/arch/powerpc/kernel/rtas-proc.c b/arch/powerpc/kernel/rtas-proc.c
index 2fe82abf1c5..6cbf2ae5d7a 100644
--- a/arch/powerpc/kernel/rtas-proc.c
+++ b/arch/powerpc/kernel/rtas-proc.c
@@ -160,7 +160,7 @@ static int sensors_open(struct inode *inode, struct file *file)
 	return single_open(file, ppc_rtas_sensors_show, NULL);
 }
 
-struct file_operations ppc_rtas_sensors_operations = {
+const struct file_operations ppc_rtas_sensors_operations = {
 	.open		= sensors_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
@@ -172,7 +172,7 @@ static int poweron_open(struct inode *inode, struct file *file)
 	return single_open(file, ppc_rtas_poweron_show, NULL);
 }
 
-struct file_operations ppc_rtas_poweron_operations = {
+const struct file_operations ppc_rtas_poweron_operations = {
 	.op