[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>

8 files changed, 8 insertions, 8 deletions

diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c
index e1a746269c4c..ef36f2132aa4 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 3a1a958fb5f2..8df7b1323c05 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 9e451acc6491..268598ef3efe 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 9faea04e11e9..b830a8cbef78 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 655d375ab22b..cea49f001f89 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 a420cd099041..fce3dac5cb3e 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 8432a76b961e..b87d3b019936 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 4b868f72fe89..680b9b58b80e 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,