[PATCH] mark struct file_operations const 5

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>

14 files changed, 15 insertions, 15 deletions

diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c
index 6cedc914077..4b8a95fba1e 100644
--- a/drivers/s390/block/dasd_eer.c
+++ b/drivers/s390/block/dasd_eer.c
@@ -650,7 +650,7 @@ static unsigned int dasd_eer_poll(struct file *filp, poll_table *ptable)
 	return mask;
 }
 
-static struct file_operations dasd_eer_fops = {
+static const struct file_operations dasd_eer_fops = {
 	.open		= &dasd_eer_open,
 	.release	= &dasd_eer_close,
 	.read		= &dasd_eer_read,
diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c
index 8b7e11815d7..8b3b0f4a157 100644
--- a/drivers/s390/block/dasd_proc.c
+++ b/drivers/s390/block/dasd_proc.c
@@ -147,7 +147,7 @@ static int dasd_devices_open(struct inode *inode, struct file *file)
 	return seq_open(file, &dasd_devices_seq_ops);
 }
 
-static struct file_operations dasd_devices_file_ops = {
+static const struct file_operations dasd_devices_file_ops = {
 	.open		= dasd_devices_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c
index e1a746269c4..ef36f2132aa 100644
--- a/drivers/s390/char/fs3270.c
+++ b/drivers/s390/char/fs3270.c
@@ -493,7 +493,7 @@ fs3270_close(struct inode *inode, struct file *filp)
 	return 0;
 }
 
-static struct file_operations fs3270_fops = {
+static const struct file_operations fs3270_fops = {
 	.owner		 = THIS_MODULE,		/* owner */
 	.read		 = fs3270_read,		/* read */
 	.write		 = fs3270_write,	/* write */
diff --git a/drivers/s390/char/monreader.c b/drivers/s390/char/monreader.c
index 3a1a958fb5f..8df7b1323c0 100644
--- a/drivers/s390/char/monreader.c
+++ b/drivers/s390/char/monreader.c
@@ -547,7 +547,7 @@ static unsigned int mon_poll(struct file *filp, struct poll_table_struct *p)
 	return 0;
 }
 
-static struct file_operations mon_fops = {
+static const struct file_operations mon_fops = {
 	.owner   = THIS_MODULE,
 	.open    = &mon_open,
 	.release = &mon_close,
diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c
index 9e451acc649..268598ef3ef 100644
--- a/drivers/s390/char/monwriter.c
+++ b/drivers/s390/char/monwriter.c
@@ -255,7 +255,7 @@ out_error:
 	return rc;
 }
 
-static struct file_operations monwrite_fops = {
+static const struct file_operations monwrite_fops = {
 	.owner	 = THIS_MODULE,
 	.open	 = &monwrite_open,
 	.release = &monwrite_close,
diff --git a/drivers/s390/char/tape_char.c b/drivers/s390/char/tape_char.c
index 9faea04e11e..b830a8cbef7 100644
--- a/drivers/s390/char/tape_char.c
+++ b/drivers/s390/char/tape_char.c
@@ -39,7 +39,7 @@ static int tapechar_ioctl(struct inode *, struct file *, unsigned int,
 static long tapechar_compat_ioctl(struct file *, unsigned int,
 			  unsigned long);
 
-static struct file_operations tape_fops =
+static const struct file_operations tape_fops =
 {
 	.owner = THIS_MODULE,
 	.read = tapechar_read,
diff --git a/drivers/s390/char/tape_proc.c b/drivers/s390/char/tape_proc.c
index 655d375ab22..cea49f001f8 100644
--- a/drivers/s390/char/tape_proc.c
+++ b/drivers/s390/char/tape_proc.c
@@ -109,7 +109,7 @@ static int tape_proc_open(struct inode *inode, struct file *file)
 	return seq_open(file, &tape_proc_seq);
 }
 
-static struct file_operations tape_proc_ops =
+static const struct file_operations tape_proc_ops =
 {
 	.open		= tape_proc_open,
 	.read		= seq_read,
diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c
index a420cd09904..fce3dac5cb3 100644
--- a/drivers/s390/char/vmcp.c
+++ b/drivers/s390/char/vmcp.c
@@ -173,7 +173,7 @@ static long vmcp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	}
 }
 
-static struct file_operations vmcp_fops = {
+static const struct file_operations vmcp_fops = {
 	.owner		= THIS_MODULE,
 	.open		= &vmcp_open,
 	.release	= &vmcp_release,
diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c
index 8432a76b961..b87d3b01993 100644
--- a/drivers/s390/char/vmlogrdr.c
+++ b/drivers/s390/char/vmlogrdr.c
@@ -88,7 +88,7 @@ static int vmlogrdr_release(struct inode *, struct file *);
 static ssize_t vmlogrdr_read (struct file *filp, char __user *data,
 			      size_t count, loff_t * ppos);
 
-static struct file_operations vmlogrdr_fops = {
+static const struct file_operations vmlogrdr_fops = {
 	.owner   = THIS_MODULE,
 	.open    = vmlogrdr_open,
 	.release = vmlogrdr_release,
diff --git a/drivers/s390/char/vmwatchdog.c b/drivers/s390/char/vmwatchdog.c
index 4b868f72fe8..680b9b58b80 100644
--- a/drivers/s390/char/vmwatchdog.c
+++ b/drivers/s390/char/vmwatchdog.c
@@ -228,7 +228,7 @@ static ssize_t vmwdt_write(struct file *f, const char __user *buf,
 	return count;
 }
 
-static struct file_operations vmwdt_fops = {
+static const struct file_operations vmwdt_fops = {
 	.open    = &vmwdt_open,
 	.release = &vmwdt_close,
 	.ioctl   = &vmwdt_ioctl,
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
index aa65df4dfce..ec0404874fa 100644
--- a/drivers/s390/cio/blacklist.c
+++ b/drivers/s390/cio/blacklist.c
@@ -364,7 +364,7 @@ cio_ignore_proc_open(struct inode *inode, struct file *file)
 	return seq_open(file, &cio_ignore_proc_seq_ops);
 }
 
-static struct file_operations cio_ignore_proc_fops = {
+static const struct file_operations cio_ignore_proc_fops = {
 	.open    = cio_ignore_proc_open,
 	.read    = seq_read,
 	.llseek  = seq_lseek,
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index 2c785148d21..99761391f34 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -807,7 +807,7 @@ static long zcrypt_compat_ioctl(struct file *filp, unsigned int cmd,
 /**
  * Misc device file operations.
  */
-static struct file_operations zcrypt_fops = {
+static const struct file_operations zcrypt_fops = {
 	.owner		= THIS_MODULE,
 	.read		= zcrypt_read,
 	.write		= zcrypt_write,
diff --git a/drivers/s390/net/qeth_proc.c b/drivers/s390/net/qeth_proc.c
index faa768e5925..81f805cc5ee 100644
--- a/drivers/s390/net/qeth_proc.c
+++ b/drivers/s390/net/qeth_proc.c
@@ -161,7 +161,7 @@ qeth_procfile_open(struct inode *inode, struct file *file)
 	return seq_open(file, &qeth_procfile_seq_ops);
 }
 
-static struct file_operations qeth_procfile_fops = {
+static const struct file_operations qeth_procfile_fops = {
 	.owner   = THIS_MODULE,
 	.open    = qeth_procfile_open,
 	.read    = seq_read,
@@ -273,7 +273,7 @@ qeth_perf_procfile_open(struct inode *inode, struct file *file)
 	return seq_open(file, &qeth_perf_procfile_seq_ops);
 }
 
-static struct file_operations qeth_perf_procfile_fops = {
+static const struct file_operations qeth_perf_procfile_fops = {
 	.owner   = THIS_MODULE,
 	.open    = qeth_perf_procfile_open,
 	.read    = seq_read,
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 39a88526679..1f9554e0801 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -60,7 +60,7 @@ static long zfcp_cfdc_dev_ioctl(struct file *, unsigned int, unsigned long);
 	_IOWR(ZFCP_CFDC_IOC_MAGIC, 0, struct zfcp_cfdc_sense_data)
 
 
-static struct file_operations zfcp_cfdc_fops = {
+static const struct file_operations zfcp_cfdc_fops = {
 	.unlocked_ioctl = zfcp_cfdc_dev_ioctl,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl = zfcp_cfdc_dev_ioctl