[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>

3 files changed, 4 insertions, 4 deletions

diff --git a/fs/autofs/autofs_i.h b/fs/autofs/autofs_i.h
index 906ba5ce2261..4ef544434b51 100644
--- a/fs/autofs/autofs_i.h
+++ b/fs/autofs/autofs_i.h
@@ -142,8 +142,8 @@ struct autofs_dir_ent *autofs_expire(struct super_block *,struct autofs_sb_info
 
 /* Operations structures */
 
-extern struct inode_operations autofs_root_inode_operations;
-extern struct inode_operations autofs_symlink_inode_operations;
+extern const struct inode_operations autofs_root_inode_operations;
+extern const struct inode_operations autofs_symlink_inode_operations;
 extern const struct file_operations autofs_root_operations;
 
 /* Initializing function */
diff --git a/fs/autofs/root.c b/fs/autofs/root.c
index e698c51d2b02..f2597205939d 100644
--- a/fs/autofs/root.c
+++ b/fs/autofs/root.c
@@ -32,7 +32,7 @@ const struct file_operations autofs_root_operations = {
         .ioctl          = autofs_root_ioctl,
 };
 
-struct inode_operations autofs_root_inode_operations = {
+const struct inode_operations autofs_root_inode_operations = {
         .lookup         = autofs_root_lookup,
         .unlink         = autofs_root_unlink,
         .symlink        = autofs_root_symlink,
diff --git a/fs/autofs/symlink.c b/fs/autofs/symlink.c
index c74f2eb65775..7ce9cb2c9ce2 100644
--- a/fs/autofs/symlink.c
+++ b/fs/autofs/symlink.c
@@ -20,7 +20,7 @@ static void *autofs_follow_link(struct dentry *dentry, struct nameidata *nd)
         return NULL;
 }
 
-struct inode_operations autofs_symlink_inode_operations = {
+const struct inode_operations autofs_symlink_inode_operations = {
         .readlink       = generic_readlink,
         .follow_link    = autofs_follow_link
 };