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[PATCH] Make most file operations structs in fs/ const

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This is a conversion to make the various file_operations structs in fs/
const.  Basically a regexp job, with a few manual fixups

The goal is both to increase correctness (harder to accidentally write to
shared datastructures) and reducing the false sharing of cachelines with
things that get dirty in .data (while .rodata is nicely read only and thus
cache clean)

Signed-off-by: Arjan van de Ven <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Arjan van de Ven 2006-03-28 01:56:42 -08:00 • committed by Linus Torvalds
commit 4b6f5d20b0
139 changed files with 225 additions and 225 deletions
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2
fs/fuse/dev.c
View file

@ -922,7 +922,7 @@ static int fuse_dev_release(struct inode *inode, struct file *file)
return 0;
}
struct file_operations fuse_dev_operations = {
const struct file_operations fuse_dev_operations = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = fuse_dev_read,

2
fs/fuse/dir.c
View file

@ -1170,7 +1170,7 @@ static struct inode_operations fuse_dir_inode_operations = {
.removexattr = fuse_removexattr,
};
static struct file_operations fuse_dir_operations = {
static const struct file_operations fuse_dir_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = fuse_readdir,

6
fs/fuse/file.c
View file

@ -12,7 +12,7 @@
#include <linux/slab.h>
#include <linux/kernel.h>
static struct file_operations fuse_direct_io_file_operations;
static const struct file_operations fuse_direct_io_file_operations;
static int fuse_send_open(struct inode *inode, struct file *file, int isdir,
struct fuse_open_out *outargp)
@ -611,7 +611,7 @@ static int fuse_set_page_dirty(struct page *page)
return 0;
}
static struct file_operations fuse_file_operations = {
static const struct file_operations fuse_file_operations = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.write = generic_file_write,
@ -623,7 +623,7 @@ static struct file_operations fuse_file_operations = {
.sendfile = generic_file_sendfile,
};
static struct file_operations fuse_direct_io_file_operations = {
static const struct file_operations fuse_direct_io_file_operations = {
.llseek = generic_file_llseek,
.read = fuse_direct_read,
.write = fuse_direct_write,

2
fs/fuse/fuse_i.h
View file

@ -346,7 +346,7 @@ static inline u64 get_node_id(struct inode *inode)
}
/** Device operations */
extern struct file_operations fuse_dev_operations;
extern const struct file_operations fuse_dev_operations;
/**
* This is the single global spinlock which protects FUSE's structures