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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/ext2/dir.c
View file

@ -658,7 +658,7 @@ not_empty:
return 0;
}
struct file_operations ext2_dir_operations = {
const struct file_operations ext2_dir_operations = {
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = ext2_readdir,

6
fs/ext2/ext2.h
View file

@ -154,12 +154,12 @@ extern void ext2_write_super (struct super_block *);
*/
/* dir.c */
extern struct file_operations ext2_dir_operations;
extern const struct file_operations ext2_dir_operations;
/* file.c */
extern struct inode_operations ext2_file_inode_operations;
extern struct file_operations ext2_file_operations;
extern struct file_operations ext2_xip_file_operations;
extern const struct file_operations ext2_file_operations;
extern const struct file_operations ext2_xip_file_operations;
/* inode.c */
extern struct address_space_operations ext2_aops;

4
fs/ext2/file.c
View file

@ -39,7 +39,7 @@ static int ext2_release_file (struct inode * inode, struct file * filp)
* We have mostly NULL's here: the current defaults are ok for
* the ext2 filesystem.
*/
struct file_operations ext2_file_operations = {
const struct file_operations ext2_file_operations = {
.llseek = generic_file_llseek,
.read = generic_file_read,
.write = generic_file_write,
@ -56,7 +56,7 @@ struct file_operations ext2_file_operations = {
};
#ifdef CONFIG_EXT2_FS_XIP
struct file_operations ext2_xip_file_operations = {
const struct file_operations ext2_xip_file_operations = {
.llseek = generic_file_llseek,
.read = xip_file_read,
.write = xip_file_write,