[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>

2 files changed, 8 insertions, 8 deletions

diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index f40a84807d75..60f47bf2e8e8 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -1115,7 +1115,7 @@ static int gfs2_removexattr(struct dentry *dentry, const char *name)
         return gfs2_ea_remove(GFS2_I(dentry->d_inode), &er);
 }
 
-struct inode_operations gfs2_file_iops = {
+const struct inode_operations gfs2_file_iops = {
         .permission = gfs2_permission,
         .setattr = gfs2_setattr,
         .getattr = gfs2_getattr,
@@ -1125,7 +1125,7 @@ struct inode_operations gfs2_file_iops = {
         .removexattr = gfs2_removexattr,
 };
 
-struct inode_operations gfs2_dev_iops = {
+const struct inode_operations gfs2_dev_iops = {
         .permission = gfs2_permission,
         .setattr = gfs2_setattr,
         .getattr = gfs2_getattr,
@@ -1135,7 +1135,7 @@ struct inode_operations gfs2_dev_iops = {
         .removexattr = gfs2_removexattr,
 };
 
-struct inode_operations gfs2_dir_iops = {
+const struct inode_operations gfs2_dir_iops = {
         .create = gfs2_create,
         .lookup = gfs2_lookup,
         .link = gfs2_link,
@@ -1154,7 +1154,7 @@ struct inode_operations gfs2_dir_iops = {
         .removexattr = gfs2_removexattr,
 };
 
-struct inode_operations gfs2_symlink_iops = {
+const struct inode_operations gfs2_symlink_iops = {
         .readlink = gfs2_readlink,
         .follow_link = gfs2_follow_link,
         .permission = gfs2_permission,
diff --git a/fs/gfs2/ops_inode.h b/fs/gfs2/ops_inode.h
index b15acb4fd34c..34f0caac1a03 100644
--- a/fs/gfs2/ops_inode.h
+++ b/fs/gfs2/ops_inode.h
@@ -12,9 +12,9 @@
 
 #include <linux/fs.h>
 
-extern struct inode_operations gfs2_file_iops;
-extern struct inode_operations gfs2_dir_iops;
-extern struct inode_operations gfs2_symlink_iops;
-extern struct inode_operations gfs2_dev_iops;
+extern const struct inode_operations gfs2_file_iops;
+extern const struct inode_operations gfs2_dir_iops;
+extern const struct inode_operations gfs2_symlink_iops;
+extern const struct inode_operations gfs2_dev_iops;
 
 #endif /* __OPS_INODE_DOT_H__ */