[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.

[[e-mail]: sparc64 fix]
Signed-off-by: Arjan van de Ven <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

arch/arm/common/rtctime.c

···
 	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,

arch/arm/mach-at91rm9200/clock.c

···
 	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,

arch/avr32/mm/tlb.c

···
 	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,

arch/cris/arch-v10/drivers/ds1302.c

···
 
 /* 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,
 }; 

arch/cris/arch-v10/drivers/eeprom.c

···
 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,

arch/cris/arch-v10/drivers/gpio.c

···
 	return 0;
 }
 
-struct file_operations gpio_fops = {
+const struct file_operations gpio_fops = {
 	.owner       = THIS_MODULE,
 	.poll        = gpio_poll,
 	.ioctl       = gpio_ioctl,

arch/cris/arch-v10/drivers/i2c.c

···
 	return 0;
 }
 
-static struct file_operations i2c_fops = {
+static const struct file_operations i2c_fops = {
 	.owner    = THIS_MODULE,
 	.ioctl    = i2c_ioctl,
 	.open     = i2c_open,

arch/cris/arch-v10/drivers/pcf8563.c

···
 
 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,
 };

arch/cris/arch-v32/drivers/cryptocop.c

···
 
 
 
-struct file_operations cryptocop_fops = {
+const struct file_operations cryptocop_fops = {
 	owner: THIS_MODULE,
 	open: cryptocop_open,
 	release: cryptocop_release,

arch/cris/arch-v32/drivers/gpio.c

···
 	return 0;
 }
 
-struct file_operations gpio_fops = {
+const struct file_operations gpio_fops = {
 	.owner       = THIS_MODULE,
 	.poll        = gpio_poll,
 	.ioctl       = gpio_ioctl,

arch/cris/arch-v32/drivers/i2c.c

···
 	return 0;
 }
 
-static struct file_operations i2c_fops = {
+static const struct file_operations i2c_fops = {
 	owner:    THIS_MODULE,
 	ioctl:    i2c_ioctl,
 	open:     i2c_open,

arch/cris/arch-v32/drivers/pcf8563.c

···
 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,

arch/cris/arch-v32/drivers/sync_serial.c

···
 
 #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,

arch/cris/kernel/profile.c

···
   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,
 };

arch/i386/kernel/apm.c

···
 __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,

arch/i386/kernel/cpu/mtrr/if.c

···
 	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,

arch/i386/kernel/cpuid.c

···
 /*
  * 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,

arch/i386/kernel/microcode.c

···
 	return ret;
 }
 
-static struct file_operations microcode_fops = {
+static const struct file_operations microcode_fops = {
 	.owner		= THIS_MODULE,
 	.write		= microcode_write,
 	.open		= microcode_open,

arch/i386/kernel/msr.c

···
 /*
  * 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,

arch/ia64/hp/common/sba_iommu.c

···
 	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,

arch/ia64/kernel/perfmon.c

···
 
 
 /* forward declaration */
-static struct file_operations pfm_file_ops;
+static const struct file_operations pfm_file_ops;
 
 /*
  * forward declarations
···
 
 
 
-static struct file_operations pfm_file_ops = {
+static const struct file_operations pfm_file_ops = {
 	.llseek   = no_llseek,
 	.read     = pfm_read,
 	.write    = pfm_write,
···
 	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,

arch/ia64/kernel/salinfo.c

···
 	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,
 };
···
 	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,

arch/ia64/sn/kernel/sn2/sn2_smp.c

···
 	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,

arch/ia64/sn/kernel/sn2/sn_hwperf.c

···
 	return r;
 }
 
-static struct file_operations sn_hwperf_fops = {
+static const struct file_operations sn_hwperf_fops = {
 	.ioctl = sn_hwperf_ioctl,
 };
 

arch/m68k/bvme6000/rtc.c

···
  *	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,

arch/m68k/mvme16x/rtc.c

···
  *	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,

arch/mips/kernel/rtlx.c

···
 	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,

arch/mips/kernel/vpe.c

···
 	return ret;
 }
 
-static struct file_operations vpe_fops = {
+static const struct file_operations vpe_fops = {
 	.owner = THIS_MODULE,
 	.open = vpe_open,
 	.release = vpe_release,

arch/mips/sibyte/sb1250/bcm1250_tbprof.c

···
 	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,

arch/parisc/kernel/perf.c

···
 	return error;
 }
 
-static struct file_operations perf_fops = {
+static const struct file_operations perf_fops = {
 	.llseek = no_llseek,
 	.read = perf_read,
 	.write = perf_write,

arch/powerpc/kernel/lparcfg.c

···
 	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,

arch/powerpc/kernel/nvram_64.c

···
 	}
 }
 
-struct file_operations nvram_fops = {
+const struct file_operations nvram_fops = {
 	.owner =	THIS_MODULE,
 	.llseek =	dev_nvram_llseek,
 	.read =		dev_nvram_read,

arch/powerpc/kernel/proc_ppc64.c

···
 			      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

arch/powerpc/kernel/rtas-proc.c

···
 	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,
···
 	return single_open(file, ppc_rtas_poweron_show, NULL);
 }
 
-struct file_operations ppc_rtas_poweron_operations = {
+const struct file_operations ppc_rtas_poweron_operations = {
 	.open		= poweron_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
···
 	return single_open(file, ppc_rtas_progress_show, NULL);
 }
 
-struct file_operations ppc_rtas_progress_operations = {
+const struct file_operations ppc_rtas_progress_operations = {
 	.open		= progress_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
···
 	return single_open(file, ppc_rtas_clock_show, NULL);
 }
 
-struct file_operations ppc_rtas_clock_operations = {
+const struct file_operations ppc_rtas_clock_operations = {
 	.open		= clock_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
···
 	return single_open(file, ppc_rtas_tone_freq_show, NULL);
 }
 
-struct file_operations ppc_rtas_tone_freq_operations = {
+const struct file_operations ppc_rtas_tone_freq_operations = {
 	.open		= tone_freq_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
···
 	return single_open(file, ppc_rtas_tone_volume_show, NULL);
 }
 
-struct file_operations ppc_rtas_tone_volume_operations = {
+const struct file_operations ppc_rtas_tone_volume_operations = {
 	.open		= tone_volume_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
···
 	return single_open(file, ppc_rtas_rmo_buf_show, NULL);
 }
 
-struct file_operations ppc_rtas_rmo_buf_ops = {
+const struct file_operations ppc_rtas_rmo_buf_ops = {
 	.open		= rmo_buf_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,

arch/powerpc/kernel/rtas_flash.c

···
 }
 
 static struct proc_dir_entry *create_flash_pde(const char *filename,
-					       struct file_operations *fops)
+					       const struct file_operations *fops)
 {
 	struct proc_dir_entry *ent = NULL;
 
···
 	return ent;
 }
 
-static struct file_operations rtas_flash_operations = {
+static const struct file_operations rtas_flash_operations = {
 	.read		= rtas_flash_read,
 	.write		= rtas_flash_write,
 	.open		= rtas_excl_open,
 	.release	= rtas_flash_release,
 };
 
-static struct file_operations manage_flash_operations = {
+static const struct file_operations manage_flash_operations = {
 	.read		= manage_flash_read,
 	.write		= manage_flash_write,
 	.open		= rtas_excl_open,
 	.release	= rtas_excl_release,
 };
 
-static struct file_operations validate_flash_operations = {
+static const struct file_operations validate_flash_operations = {
 	.read		= validate_flash_read,
 	.write		= validate_flash_write,
 	.open		= rtas_excl_open,

arch/powerpc/platforms/cell/spufs/file.c

···
 	return 0;
 }
 
-static struct file_operations spufs_mem_fops = {
+static const struct file_operations spufs_mem_fops = {
 	.open	 = spufs_mem_open,
 	.read    = spufs_mem_read,
 	.write   = spufs_mem_write,
···
 					spufs_cntl_set, "0x%08lx");
 }
 
-static struct file_operations spufs_cntl_fops = {
+static const struct file_operations spufs_cntl_fops = {
 	.open = spufs_cntl_open,
 	.release = simple_attr_close,
 	.read = simple_attr_read,
···
 	return ret;
 }
 
-static struct file_operations spufs_regs_fops = {
+static const struct file_operations spufs_regs_fops = {
 	.open	 = spufs_regs_open,
 	.read    = spufs_regs_read,
 	.write   = spufs_regs_write,
···
 	return ret;
 }
 
-static struct file_operations spufs_fpcr_fops = {
+static const struct file_operations spufs_fpcr_fops = {
 	.open = spufs_regs_open,
 	.read = spufs_fpcr_read,
 	.write = spufs_fpcr_write,
···
 	return count;
 }
 
-static struct file_operations spufs_mbox_fops = {
+static const struct file_operations spufs_mbox_fops = {
 	.open	= spufs_pipe_open,
 	.read	= spufs_mbox_read,
 };
···
 	return 4;
 }
 
-static struct file_operations spufs_mbox_stat_fops = {
+static const struct file_operations spufs_mbox_stat_fops = {
 	.open	= spufs_pipe_open,
 	.read	= spufs_mbox_stat_read,
 };
···
 	return mask;
 }
 
-static struct file_operations spufs_ibox_fops = {
+static const struct file_operations spufs_ibox_fops = {
 	.open	= spufs_pipe_open,
 	.read	= spufs_ibox_read,
 	.poll	= spufs_ibox_poll,
···
 	return 4;
 }
 
-static struct file_operations spufs_ibox_stat_fops = {
+static const struct file_operations spufs_ibox_stat_fops = {
 	.open	= spufs_pipe_open,
 	.read	= spufs_ibox_stat_read,
 };
···
 	return mask;
 }
 
-static struct file_operations spufs_wbox_fops = {
+static const struct file_operations spufs_wbox_fops = {
 	.open	= spufs_pipe_open,
 	.write	= spufs_wbox_write,
 	.poll	= spufs_wbox_poll,
···
 	return 4;
 }
 
-static struct file_operations spufs_wbox_stat_fops = {
+static const struct file_operations spufs_wbox_stat_fops = {
 	.open	= spufs_pipe_open,
 	.read	= spufs_wbox_stat_read,
 };
···
 	return 0;
 }
 
-static struct file_operations spufs_signal1_fops = {
+static const struct file_operations spufs_signal1_fops = {
 	.open = spufs_signal1_open,
 	.read = spufs_signal1_read,
 	.write = spufs_signal1_write,
···
 #define spufs_signal2_mmap NULL
 #endif /* !SPUFS_MMAP_4K */
 
-static struct file_operations spufs_signal2_fops = {
+static const struct file_operations spufs_signal2_fops = {
 	.open = spufs_signal2_open,
 	.read = spufs_signal2_read,
 	.write = spufs_signal2_write,
···
 	return nonseekable_open(inode, file);
 }
 
-static struct file_operations spufs_mss_fops = {
+static const struct file_operations spufs_mss_fops = {
 	.open	 = spufs_mss_open,
 	.mmap	 = spufs_mss_mmap,
 };
···
 	return nonseekable_open(inode, file);
 }
 
-static struct file_operations spufs_psmap_fops = {
+static const struct file_operations spufs_psmap_fops = {
 	.open	 = spufs_psmap_open,
 	.mmap	 = spufs_psmap_mmap,
 };
···
 	return fasync_helper(fd, file, on, &ctx->mfc_fasync);
 }
 
-static struct file_operations spufs_mfc_fops = {
+static const struct file_operations spufs_mfc_fops = {
 	.open	 = spufs_mfc_open,
 	.read	 = spufs_mfc_read,
 	.write	 = spufs_mfc_write,
···
 	return ret;
 }
 
-static struct file_operations spufs_mbox_info_fops = {
+static const struct file_operations spufs_mbox_info_fops = {
 	.open = spufs_info_open,
 	.read = spufs_mbox_info_read,
 	.llseek  = generic_file_llseek,
···
 	return ret;
 }
 
-static struct file_operations spufs_ibox_info_fops = {
+static const struct file_operations spufs_ibox_info_fops = {
 	.open = spufs_info_open,
 	.read = spufs_ibox_info_read,
 	.llseek  = generic_file_llseek,
···
 	return ret;
 }
 
-static struct file_operations spufs_wbox_info_fops = {
+static const struct file_operations spufs_wbox_info_fops = {
 	.open = spufs_info_open,
 	.read = spufs_wbox_info_read,
 	.llseek  = generic_file_llseek,
···
 	return ret;
 }
 
-static struct file_operations spufs_dma_info_fops = {
+static const struct file_operations spufs_dma_info_fops = {
 	.open = spufs_info_open,
 	.read = spufs_dma_info_read,
 };
···
 	return ret;
 }
 
-static struct file_operations spufs_proxydma_info_fops = {
+static const struct file_operations spufs_proxydma_info_fops = {
 	.open = spufs_info_open,
 	.read = spufs_proxydma_info_read,
 };

arch/powerpc/platforms/cell/spufs/inode.c

···
 	.lookup = simple_lookup,
 };
 
-struct file_operations spufs_context_fops = {
+const struct file_operations spufs_context_fops = {
 	.open		= dcache_dir_open,
 	.release	= spufs_dir_close,
 	.llseek		= dcache_dir_lseek,
···
 	return dcache_dir_close(inode, file);
 }
 
-struct file_operations spufs_gang_fops = {
+const struct file_operations spufs_gang_fops = {
 	.open		= dcache_dir_open,
 	.release	= spufs_gang_close,
 	.llseek		= dcache_dir_lseek,

arch/powerpc/platforms/iseries/lpevents.c

···
 	return single_open(file, proc_lpevents_show, NULL);
 }
 
-static struct file_operations proc_lpevents_operations = {
+static const struct file_operations proc_lpevents_operations = {
 	.open		= proc_lpevents_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,

arch/powerpc/platforms/iseries/mf.c

···
 	return rc;
 }
 
-static struct file_operations proc_vmlinux_operations = {
+static const struct file_operations proc_vmlinux_operations = {
 	.write		= proc_mf_change_vmlinux,
 };
 

arch/powerpc/platforms/iseries/proc.c

···
 	return single_open(file, proc_titantod_show, NULL);
 }
 
-static struct file_operations proc_titantod_operations = {
+static const struct file_operations proc_titantod_operations = {
 	.open		= proc_titantod_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,

arch/powerpc/platforms/iseries/viopath.c

···
 	return single_open(file, proc_viopath_show, NULL);
 }
 
-static struct file_operations proc_viopath_operations = {
+static const struct file_operations proc_viopath_operations = {
 	.open		= proc_viopath_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,

arch/powerpc/platforms/pseries/eeh.c

···
 	return single_open(file, proc_eeh_show, NULL);
 }
 
-static struct file_operations proc_eeh_operations = {
+static const struct file_operations proc_eeh_operations = {
 	.open      = proc_eeh_open,
 	.read      = seq_read,
 	.llseek    = seq_lseek,

arch/powerpc/platforms/pseries/hvCall_inst.c

···
 	return rc;
 }
 
-static struct file_operations hcall_inst_seq_fops = {
+static const struct file_operations hcall_inst_seq_fops = {
 	.open = hcall_inst_seq_open,
 	.read = seq_read,
 	.llseek = seq_lseek,

arch/powerpc/platforms/pseries/reconfig.c

···
 	return rv ? rv : count;
 }
 
-static struct file_operations ofdt_fops = {
+static const struct file_operations ofdt_fops = {
 	.write = ofdt_write
 };
 

arch/powerpc/platforms/pseries/rtasd.c

···
 	return 0;
 }
 
-struct file_operations proc_rtas_log_operations = {
+const struct file_operations proc_rtas_log_operations = {
 	.read =		rtas_log_read,
 	.poll =		rtas_log_poll,
 	.open =		rtas_log_open,

arch/powerpc/platforms/pseries/scanlog.c

···
 	return 0;
 }
 
-struct file_operations scanlog_fops = {
+const struct file_operations scanlog_fops = {
 	.owner		= THIS_MODULE,
 	.read		= scanlog_read,
 	.write		= scanlog_write,

arch/ppc/8xx_io/cs4218_tdm.c

···
 }
 
 
-static struct file_operations mixer_fops =
+static const struct file_operations mixer_fops =
 {
 	.owner =	THIS_MODULE,
 	.llseek =	sound_lseek,
···
 
 
 
-static struct file_operations sq_fops =
+static const struct file_operations sq_fops =
 {
 	.owner =	THIS_MODULE,
 	.llseek =	sound_lseek,
···
 }
 
 
-static struct file_operations state_fops =
+static const struct file_operations state_fops =
 {
 	.owner =	THIS_MODULE,
 	.llseek =	sound_lseek,

arch/s390/hypfs/inode.c

···
 	struct mutex lock;		/* lock to protect update process */
 };
 
-static struct file_operations hypfs_file_ops;
+static const struct file_operations hypfs_file_ops;
 static struct file_system_type hypfs_type;
 static struct super_operations hypfs_s_ops;
 
···
 	return dentry;
 }
 
-static struct file_operations hypfs_file_ops = {
+static const struct file_operations hypfs_file_ops = {
 	.open		= hypfs_open,
 	.release	= hypfs_release,
 	.read		= do_sync_read,

arch/s390/kernel/debug.c

···
 
 static int initialized;
 
-static struct file_operations debug_file_ops = {
+static const struct file_operations debug_file_ops = {
 	.owner   = THIS_MODULE,
 	.read    = debug_output,
 	.write   = debug_input,

arch/sh/boards/landisk/landisk_pwb.c

···
 	return IRQ_HANDLED;
 }
 
-static struct file_operations swdrv_fops = {
+static const struct file_operations swdrv_fops = {
 	.read = swdrv_read,	/* read */
 	.write = swdrv_write,	/* write */
 	.open = swdrv_open,	/* open */

arch/sh/mm/cache-debugfs.c

···
 	return single_open(file, cache_seq_show, inode->i_private);
 }
 
-static struct file_operations cache_debugfs_fops = {
+static const struct file_operations cache_debugfs_fops = {
 	.owner		= THIS_MODULE,
 	.open		= cache_debugfs_open,
 	.read		= seq_read,

arch/sh/mm/pmb.c

···
 	return single_open(file, pmb_seq_show, NULL);
 }
 
-static struct file_operations pmb_debugfs_fops = {
+static const struct file_operations pmb_debugfs_fops = {
 	.owner		= THIS_MODULE,
 	.open		= pmb_debugfs_open,
 	.read		= seq_read,

arch/sh/oprofile/op_model_sh7750.c

···
 	return count;
 }
 
-static struct file_operations count_fops = {
+static const struct file_operations count_fops = {
 	.read		= sh7750_read_count,
 	.write		= sh7750_write_count,
 };

arch/sparc/kernel/apc.c

···
 	return 0;
 }
 
-static struct file_operations apc_fops = {
+static const struct file_operations apc_fops = {
 	.ioctl =	apc_ioctl,
 	.open =		apc_open,
 	.release =	apc_release,

arch/sparc64/kernel/time.c

···
 }
 
 
-static struct file_operations mini_rtc_fops = {
+static const struct file_operations mini_rtc_fops = {
 	.owner		= THIS_MODULE,
 	.ioctl		= mini_rtc_ioctl,
 	.open		= mini_rtc_open,

arch/sparc64/solaris/socksys.c

···
 	return mask;
 }
 	
-static struct file_operations socksys_fops = {
+static const struct file_operations socksys_fops = {
 	.open =		socksys_open,
 	.release =	socksys_release,
 };

arch/um/drivers/harddog_kern.c

···
 	}
 }
 
-static struct file_operations harddog_fops = {
+static const struct file_operations harddog_fops = {
 	.owner		= THIS_MODULE,
 	.write		= harddog_write,
 	.ioctl		= harddog_ioctl,

arch/v850/kernel/rte_cb_leds.c

···
 	return 0;
 }
 
-static struct file_operations leds_fops = {
+static const struct file_operations leds_fops = {
 	.read		= leds_dev_read,
 	.write		= leds_dev_write,
 	.llseek		= leds_dev_lseek

arch/x86_64/kernel/mce.c

···
 	} 
 }
 
-static struct file_operations mce_chrdev_ops = {
+static const struct file_operations mce_chrdev_ops = {
 	.read = mce_read,
 	.ioctl = mce_ioctl,
 };