commit 754661f143e70d66eae6c48532ca245aa05dec0e
author Arjan van de Ven <arjan@linux.intel.com> Mon Feb 12 00:55:38 2007 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> Mon Feb 12 09:48:46 2007 -0800
tree c3ed0f7f96061931e497ed92d2b21294756b4831
parent 9c2e08c592cd357a8330c34def1e8ecfdcf53275

[PATCH] mark struct inode_operations const 1

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 <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/adfs/adfs.h

diff --git a/fs/adfs/adfs.h b/fs/adfs/adfs.h
index 29217ff..936f2af 100644
--- a/fs/adfs/adfs.h
+++ b/fs/adfs/adfs.h
@@ -84,7 +84,7 @@
  */
 
 /* dir_*.c */
-extern struct inode_operations adfs_dir_inode_operations;
+extern const struct inode_operations adfs_dir_inode_operations;
 extern const struct file_operations adfs_dir_operations;
 extern struct dentry_operations adfs_dentry_operations;
 extern struct adfs_dir_ops adfs_f_dir_ops;
@@ -93,7 +93,7 @@
 extern int adfs_dir_update(struct super_block *sb, struct object_info *obj);
 
 /* file.c */
-extern struct inode_operations adfs_file_inode_operations;
+extern const struct inode_operations adfs_file_inode_operations;
 extern const struct file_operations adfs_file_operations;
 
 static inline __u32 signed_asl(__u32 val, signed int shift)

fs/adfs/dir.c

diff --git a/fs/adfs/dir.c b/fs/adfs/dir.c
index 2b89038..fc1a8dc 100644
--- a/fs/adfs/dir.c
+++ b/fs/adfs/dir.c
@@ -295,7 +295,7 @@
 /*
  * directories can handle most operations...
  */
-struct inode_operations adfs_dir_inode_operations = {
+const struct inode_operations adfs_dir_inode_operations = {
 	.lookup		= adfs_lookup,
 	.setattr	= adfs_notify_change,
 };

fs/adfs/file.c

diff --git a/fs/adfs/file.c b/fs/adfs/file.c
index 6101ea6..f544a28 100644
--- a/fs/adfs/file.c
+++ b/fs/adfs/file.c
@@ -36,6 +36,6 @@
 	.sendfile	= generic_file_sendfile,
 };
 
-struct inode_operations adfs_file_inode_operations = {
+const struct inode_operations adfs_file_inode_operations = {
 	.setattr	= adfs_notify_change,
 };