[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, 5 insertions, 5 deletions

diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 3bbc24b58785..3c6c1fd2be90 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -125,7 +125,7 @@ const struct file_operations ext4_file_operations = {
         .splice_write   = generic_file_splice_write,
 };
 
-struct inode_operations ext4_file_inode_operations = {
+const struct inode_operations ext4_file_inode_operations = {
         .truncate       = ext4_truncate,
         .setattr        = ext4_setattr,
 #ifdef CONFIG_EXT4DEV_FS_XATTR
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 34b3448b40f9..e7e1d79a7d75 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2363,7 +2363,7 @@ end_rename:
 /*
  * directories can handle most operations...
  */
-struct inode_operations ext4_dir_inode_operations = {
+const struct inode_operations ext4_dir_inode_operations = {
         .create         = ext4_create,
         .lookup         = ext4_lookup,
         .link           = ext4_link,
@@ -2383,7 +2383,7 @@ struct inode_operations ext4_dir_inode_operations = {
         .permission     = ext4_permission,
 };
 
-struct inode_operations ext4_special_inode_operations = {
+const struct inode_operations ext4_special_inode_operations = {
         .setattr        = ext4_setattr,
 #ifdef CONFIG_EXT4DEV_FS_XATTR
         .setxattr       = generic_setxattr,
diff --git a/fs/ext4/symlink.c b/fs/ext4/symlink.c
index fcf527286d75..e6f9da4287c4 100644
--- a/fs/ext4/symlink.c
+++ b/fs/ext4/symlink.c
@@ -30,7 +30,7 @@ static void * ext4_follow_link(struct dentry *dentry, struct nameidata *nd)
         return NULL;
 }
 
-struct inode_operations ext4_symlink_inode_operations = {
+const struct inode_operations ext4_symlink_inode_operations = {
         .readlink       = generic_readlink,
         .follow_link    = page_follow_link_light,
         .put_link       = page_put_link,
@@ -42,7 +42,7 @@ struct inode_operations ext4_symlink_inode_operations = {
 #endif
 };
 
-struct inode_operations ext4_fast_symlink_inode_operations = {
+const struct inode_operations ext4_fast_symlink_inode_operations = {
         .readlink       = generic_readlink,
         .follow_link    = ext4_follow_link,
 #ifdef CONFIG_EXT4DEV_FS_XATTR