[PATCH] mark struct inode_operations const 2

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/hpfs/file.c b/fs/hpfs/file.c
index fb4c8915010a..b4eafc0f1e54 100644
--- a/fs/hpfs/file.c
+++ b/fs/hpfs/file.c
@@ -132,7 +132,7 @@ const struct file_operations hpfs_file_ops =
         .sendfile       = generic_file_sendfile,
 };
 
-struct inode_operations hpfs_file_iops =
+const struct inode_operations hpfs_file_iops =
 {
         .truncate       = hpfs_truncate,
         .setattr        = hpfs_notify_change,
diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h
index 1c07aa82d327..42ff60ccf2a9 100644
--- a/fs/hpfs/hpfs_fn.h
+++ b/fs/hpfs/hpfs_fn.h
@@ -266,7 +266,7 @@ void hpfs_set_ea(struct inode *, struct fnode *, char *, char *, int);
 
 int hpfs_file_fsync(struct file *, struct dentry *, int);
 extern const struct file_operations hpfs_file_ops;
-extern struct inode_operations hpfs_file_iops;
+extern const struct inode_operations hpfs_file_iops;
 extern const struct address_space_operations hpfs_aops;
 
 /* inode.c */
@@ -302,7 +302,7 @@ void hpfs_decide_conv(struct inode *, unsigned char *, unsigned);
 
 /* namei.c */
 
-extern struct inode_operations hpfs_dir_iops;
+extern const struct inode_operations hpfs_dir_iops;
 extern const struct address_space_operations hpfs_symlink_aops;
 
 static inline struct hpfs_inode_info *hpfs_i(struct inode *inode)
diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
index 2507e7393f3c..9953cf9a2f16 100644
--- a/fs/hpfs/namei.c
+++ b/fs/hpfs/namei.c
@@ -659,7 +659,7 @@ end1:
         return err;
 }
 
-struct inode_operations hpfs_dir_iops =
+const struct inode_operations hpfs_dir_iops =
 {
         .create         = hpfs_create,
         .lookup         = hpfs_lookup,