[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>

4 files changed, 5 insertions, 5 deletions

diff --git a/fs/minix/file.c b/fs/minix/file.c
index 40eac2e60d25..f92baa1d7570 100644
--- a/fs/minix/file.c
+++ b/fs/minix/file.c
@@ -26,7 +26,7 @@ const struct file_operations minix_file_operations = {
         .sendfile       = generic_file_sendfile,
 };
 
-struct inode_operations minix_file_inode_operations = {
+const struct inode_operations minix_file_inode_operations = {
         .truncate       = minix_truncate,
         .getattr        = minix_getattr,
 };
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index 9ddfcc148287..e56822bff948 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -369,7 +369,7 @@ static const struct address_space_operations minix_aops = {
         .bmap = minix_bmap
 };
 
-static struct inode_operations minix_symlink_inode_operations = {
+static const struct inode_operations minix_symlink_inode_operations = {
         .readlink       = generic_readlink,
         .follow_link    = page_follow_link_light,
         .put_link       = page_put_link,
diff --git a/fs/minix/minix.h b/fs/minix/minix.h
index e016ee91d936..73ef84f8fb0b 100644
--- a/fs/minix/minix.h
+++ b/fs/minix/minix.h
@@ -75,8 +75,8 @@ extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**);
 extern ino_t minix_inode_by_name(struct dentry*);
 extern int minix_sync_file(struct file *, struct dentry *, int);
 
-extern struct inode_operations minix_file_inode_operations;
-extern struct inode_operations minix_dir_inode_operations;
+extern const struct inode_operations minix_file_inode_operations;
+extern const struct inode_operations minix_dir_inode_operations;
 extern const struct file_operations minix_file_operations;
 extern const struct file_operations minix_dir_operations;
 extern struct dentry_operations minix_dentry_operations;
diff --git a/fs/minix/namei.c b/fs/minix/namei.c
index 299bb66e3bde..f4aa7a939040 100644
--- a/fs/minix/namei.c
+++ b/fs/minix/namei.c
@@ -291,7 +291,7 @@ out:
 /*
  * directories can handle most operations...
  */
-struct inode_operations minix_dir_inode_operations = {
+const struct inode_operations minix_dir_inode_operations = {
         .create         = minix_create,
         .lookup         = minix_lookup,
         .link           = minix_link,