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

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 <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 4 insertions, 4 deletions

diff --git a/fs/hfs/dir.c b/fs/hfs/dir.c
index 534e5a7480ef..7cd8cc03aea7 100644
--- a/fs/hfs/dir.c
+++ b/fs/hfs/dir.c
@@ -313,7 +313,7 @@ static int hfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         return res;
 }
 
-struct file_operations hfs_dir_operations = {
+const struct file_operations hfs_dir_operations = {
         .read           = generic_read_dir,
         .readdir        = hfs_readdir,
         .llseek         = generic_file_llseek,
diff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h
index 18ce47ab1b71..3ed8663a8db1 100644
--- a/fs/hfs/hfs_fs.h
+++ b/fs/hfs/hfs_fs.h
@@ -169,7 +169,7 @@ extern int hfs_cat_move(u32, struct inode *, struct qstr *,
 extern void hfs_cat_build_key(struct super_block *, btree_key *, u32, struct qstr *);
 
 /* dir.c */
-extern struct file_operations hfs_dir_operations;
+extern const struct file_operations hfs_dir_operations;
 extern struct inode_operations hfs_dir_inode_operations;
 
 /* extent.c */
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index 2c564701724f..2d4ced22201b 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -17,7 +17,7 @@
 #include "hfs_fs.h"
 #include "btree.h"
 
-static struct file_operations hfs_file_operations;
+static const struct file_operations hfs_file_operations;
 static struct inode_operations hfs_file_inode_operations;
 
 /*================ Variable-like macros ================*/
@@ -601,7 +601,7 @@ int hfs_inode_setattr(struct dentry *dentry, struct iattr * attr)
 }
 
 
-static struct file_operations hfs_file_operations = {
+static const struct file_operations hfs_file_operations = {
         .llseek         = generic_file_llseek,
         .read           = generic_file_read,
         .write          = generic_file_write,