[PATCH] mark struct inode_operations const 3

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/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c
index b935a3dd4b65..2f14774a124f 100644
--- a/fs/ramfs/file-mmu.c
+++ b/fs/ramfs/file-mmu.c
@@ -45,6 +45,6 @@ const struct file_operations ramfs_file_operations = {
         .llseek         = generic_file_llseek,
 };
 
-struct inode_operations ramfs_file_inode_operations = {
+const struct inode_operations ramfs_file_inode_operations = {
         .getattr        = simple_getattr,
 };
diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
index d05e09ac9a99..d3fd7c6732d2 100644
--- a/fs/ramfs/file-nommu.c
+++ b/fs/ramfs/file-nommu.c
@@ -47,7 +47,7 @@ const struct file_operations ramfs_file_operations = {
         .llseek                 = generic_file_llseek,
 };
 
-struct inode_operations ramfs_file_inode_operations = {
+const struct inode_operations ramfs_file_inode_operations = {
         .setattr                = ramfs_nommu_setattr,
         .getattr                = simple_getattr,
 };
diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c
index 2faf4cdf61b0..7a96b1d662a2 100644
--- a/fs/ramfs/inode.c
+++ b/fs/ramfs/inode.c
@@ -41,7 +41,7 @@
 #define RAMFS_MAGIC     0x858458f6
 
 static struct super_operations ramfs_ops;
-static struct inode_operations ramfs_dir_inode_operations;
+static const struct inode_operations ramfs_dir_inode_operations;
 
 static struct backing_dev_info ramfs_backing_dev_info = {
         .ra_pages       = 0,    /* No readahead */
@@ -143,7 +143,7 @@ static int ramfs_symlink(struct inode * dir, struct dentry *dentry, const char *
         return error;
 }
 
-static struct inode_operations ramfs_dir_inode_operations = {
+static const struct inode_operations ramfs_dir_inode_operations = {
         .create         = ramfs_create,
         .lookup         = simple_lookup,
         .link           = simple_link,
diff --git a/fs/ramfs/internal.h b/fs/ramfs/internal.h
index c2bb58e74653..af7cc074a476 100644
--- a/fs/ramfs/internal.h
+++ b/fs/ramfs/internal.h
@@ -12,4 +12,4 @@
 
 extern const struct address_space_operations ramfs_aops;
 extern const struct file_operations ramfs_file_operations;
-extern struct inode_operations ramfs_file_inode_operations;
+extern const struct inode_operations ramfs_file_inode_operations;