diff options
author | Arjan van de Ven <arjan@infradead.org> | 2006-07-03 07:24:21 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-03 22:26:59 (GMT) |
commit | 62322d2554d2f9680c8ace7bbf1f97d8fa84ad1a (patch) | |
tree | 904f8b8354a4079cc1daaa355fe30200dcae9dc9 /drivers/char/mem.c | |
parent | d459ec0baa5d22e111dfb139c46d6d788a9eac20 (diff) | |
download | linux-fsl-qoriq-62322d2554d2f9680c8ace7bbf1f97d8fa84ad1a.tar.xz |
[PATCH] make more file_operation structs static
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>
Diffstat (limited to 'drivers/char/mem.c')
-rw-r--r-- | drivers/char/mem.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 70f3954..e97c32c 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -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 */ }; |