[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/udf/dir.c b/fs/udf/dir.c
index f5222527fe39..8c28efa3b8ff 100644
--- a/fs/udf/dir.c
+++ b/fs/udf/dir.c
@@ -42,7 +42,7 @@ static int do_udf_readdir(struct inode *, struct file *, filldir_t, void *);
 
 /* readdir and lookup functions */
 
-struct file_operations udf_dir_operations = {
+const struct file_operations udf_dir_operations = {
         .read                   = generic_read_dir,
         .readdir                = udf_readdir,
         .ioctl                  = udf_ioctl,
diff --git a/fs/udf/file.c b/fs/udf/file.c
index a6f2acc1f15c..e34b00e303f1 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -248,7 +248,7 @@ static int udf_release_file(struct inode * inode, struct file * filp)
         return 0;
 }
 
-struct file_operations udf_file_operations = {
+const struct file_operations udf_file_operations = {
         .read                   = generic_file_read,
         .ioctl                  = udf_ioctl,
         .open                   = generic_file_open,
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index 1d5800e0cbe7..023e19ba5a2e 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -44,9 +44,9 @@ struct buffer_head;
 struct super_block;
 
 extern struct inode_operations udf_dir_inode_operations;
-extern struct file_operations udf_dir_operations;
+extern const struct file_operations udf_dir_operations;
 extern struct inode_operations udf_file_inode_operations;
-extern struct file_operations udf_file_operations;
+extern const struct file_operations udf_file_operations;
 extern struct address_space_operations udf_aops;
 extern struct address_space_operations udf_adinicb_aops;
 extern struct address_space_operations udf_symlink_aops;