[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>

2 files changed, 6 insertions, 6 deletions

diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index 839a34fa6fab..275445d17162 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -446,9 +446,9 @@ void __ecryptfs_printk(const char *fmt, ...);
 
 extern const struct file_operations ecryptfs_main_fops;
 extern const struct file_operations ecryptfs_dir_fops;
-extern struct inode_operations ecryptfs_main_iops;
-extern struct inode_operations ecryptfs_dir_iops;
-extern struct inode_operations ecryptfs_symlink_iops;
+extern const struct inode_operations ecryptfs_main_iops;
+extern const struct inode_operations ecryptfs_dir_iops;
+extern const struct inode_operations ecryptfs_symlink_iops;
 extern struct super_operations ecryptfs_sops;
 extern struct dentry_operations ecryptfs_dops;
 extern struct address_space_operations ecryptfs_aops;
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 91357183398d..9fa7e0b27a96 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -989,7 +989,7 @@ int ecryptfs_inode_set(struct inode *inode, void *lower_inode)
         return 0;
 }
 
-struct inode_operations ecryptfs_symlink_iops = {
+const struct inode_operations ecryptfs_symlink_iops = {
         .readlink = ecryptfs_readlink,
         .follow_link = ecryptfs_follow_link,
         .put_link = ecryptfs_put_link,
@@ -1001,7 +1001,7 @@ struct inode_operations ecryptfs_symlink_iops = {
         .removexattr = ecryptfs_removexattr
 };
 
-struct inode_operations ecryptfs_dir_iops = {
+const struct inode_operations ecryptfs_dir_iops = {
         .create = ecryptfs_create,
         .lookup = ecryptfs_lookup,
         .link = ecryptfs_link,
@@ -1019,7 +1019,7 @@ struct inode_operations ecryptfs_dir_iops = {
         .removexattr = ecryptfs_removexattr
 };
 
-struct inode_operations ecryptfs_main_iops = {
+const struct inode_operations ecryptfs_main_iops = {
         .permission = ecryptfs_permission,
         .setattr = ecryptfs_setattr,
         .setxattr = ecryptfs_setxattr,