[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/bfs/bfs.h b/fs/bfs/bfs.h
index 31973bbbf057..130f6c66c5ba 100644
--- a/fs/bfs/bfs.h
+++ b/fs/bfs/bfs.h
@@ -48,12 +48,12 @@ static inline struct bfs_inode_info *BFS_I(struct inode *inode)
 
 
 /* file.c */
-extern struct inode_operations bfs_file_inops;
+extern const struct inode_operations bfs_file_inops;
 extern const struct file_operations bfs_file_operations;
 extern const struct address_space_operations bfs_aops;
 
 /* dir.c */
-extern struct inode_operations bfs_dir_inops;
+extern const struct inode_operations bfs_dir_inops;
 extern const struct file_operations bfs_dir_operations;
 
 #endif /* _FS_BFS_BFS_H */
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index 2a746e688df5..097f1497f743 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -260,7 +260,7 @@ end_rename:
         return error;
 }
 
-struct inode_operations bfs_dir_inops = {
+const struct inode_operations bfs_dir_inops = {
         .create                 = bfs_create,
         .lookup                 = bfs_lookup,
         .link                   = bfs_link,
diff --git a/fs/bfs/file.c b/fs/bfs/file.c
index a9164a87f8de..ef4d1fa04e65 100644
--- a/fs/bfs/file.c
+++ b/fs/bfs/file.c
@@ -164,4 +164,4 @@ const struct address_space_operations bfs_aops = {
         .bmap           = bfs_bmap,
 };
 
-struct inode_operations bfs_file_inops;
+const struct inode_operations bfs_file_inops;