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[PATCH] make more file_operation structs static

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Mark the static struct file_operations in drivers/char as const.  Making
them const prevents accidental bugs, and moves them to the .rodata section
so that they no longer do any false sharing; in addition with the proper
debug option they are then protected against corruption..

[akpm@osdl.org: build fix]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Arjan van de Ven
2006-07-03 00:24:21 -07:00
committed by Linus Torvalds
parent d459ec0baa
commit 62322d2554
97 changed files with 118 additions and 118 deletions
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18
drivers/char/mem.c
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@ -776,7 +776,7 @@ static int open_port(struct inode * inode, struct file * filp)
#define open_kmem open_mem
#define open_oldmem open_mem
static struct file_operations mem_fops = {
static const struct file_operations mem_fops = {
.llseek = memory_lseek,
.read = read_mem,
.write = write_mem,
@ -784,7 +784,7 @@ static struct file_operations mem_fops = {
.open = open_mem,
};
static struct file_operations kmem_fops = {
static const struct file_operations kmem_fops = {
.llseek = memory_lseek,
.read = read_kmem,
.write = write_kmem,
@ -792,7 +792,7 @@ static struct file_operations kmem_fops = {
.open = open_kmem,
};
static struct file_operations null_fops = {
static const struct file_operations null_fops = {
.llseek = null_lseek,
.read = read_null,
.write = write_null,
@ -800,7 +800,7 @@ static struct file_operations null_fops = {
};
#if defined(CONFIG_ISA) || !defined(__mc68000__)
static struct file_operations port_fops = {
static const struct file_operations port_fops = {
.llseek = memory_lseek,
.read = read_port,
.write = write_port,
@ -808,7 +808,7 @@ static struct file_operations port_fops = {
};
#endif
static struct file_operations zero_fops = {
static const struct file_operations zero_fops = {
.llseek = zero_lseek,
.read = read_zero,
.write = write_zero,
@ -819,14 +819,14 @@ static struct backing_dev_info zero_bdi = {
.capabilities = BDI_CAP_MAP_COPY,
};
static struct file_operations full_fops = {
static const struct file_operations full_fops = {
.llseek = full_lseek,
.read = read_full,
.write = write_full,
};
#ifdef CONFIG_CRASH_DUMP
static struct file_operations oldmem_fops = {
static const struct file_operations oldmem_fops = {
.read = read_oldmem,
.open = open_oldmem,
};
@ -853,7 +853,7 @@ static ssize_t kmsg_write(struct file * file, const char __user * buf,
return ret;
}
static struct file_operations kmsg_fops = {
static const struct file_operations kmsg_fops = {
.write = kmsg_write,
};
@ -903,7 +903,7 @@ static int memory_open(struct inode * inode, struct file * filp)
return 0;
}
static struct file_operations memory_fops = {
static const struct file_operations memory_fops = {
.open = memory_open, /* just a selector for the real open */
};