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[PATCH] mark struct inode_operations const 3

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Many struct inode_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 <[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 2007-02-12 00:55:40 -08:00 • committed by Linus Torvalds
commit c5ef1c42c5
48 changed files with 103 additions and 103 deletions
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2
fs/ramfs/file-mmu.c
View file

@ -45,6 +45,6 @@ const struct file_operations ramfs_file_operations = {
.llseek = generic_file_llseek,
};
struct inode_operations ramfs_file_inode_operations = {
const struct inode_operations ramfs_file_inode_operations = {
.getattr = simple_getattr,
};

2
fs/ramfs/file-nommu.c
View file

@ -47,7 +47,7 @@ const struct file_operations ramfs_file_operations = {
.llseek = generic_file_llseek,
};
struct inode_operations ramfs_file_inode_operations = {
const struct inode_operations ramfs_file_inode_operations = {
.setattr = ramfs_nommu_setattr,
.getattr = simple_getattr,
};

4
fs/ramfs/inode.c
View file

@ -41,7 +41,7 @@
#define RAMFS_MAGIC 0x858458f6
static struct super_operations ramfs_ops;
static struct inode_operations ramfs_dir_inode_operations;
static const struct inode_operations ramfs_dir_inode_operations;
static struct backing_dev_info ramfs_backing_dev_info = {
.ra_pages = 0, /* No readahead */
@ -143,7 +143,7 @@ static int ramfs_symlink(struct inode * dir, struct dentry *dentry, const char *
return error;
}
static struct inode_operations ramfs_dir_inode_operations = {
static const struct inode_operations ramfs_dir_inode_operations = {
.create = ramfs_create,
.lookup = simple_lookup,
.link = simple_link,

2
fs/ramfs/internal.h
View file

@ -12,4 +12,4 @@
extern const struct address_space_operations ramfs_aops;
extern const struct file_operations ramfs_file_operations;
extern struct inode_operations ramfs_file_inode_operations;
extern const struct inode_operations ramfs_file_inode_operations;