[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>
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index c19ac15..e2a0ea5 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -158,7 +158,7 @@
extern const struct file_operations ext2_dir_operations;
/* file.c */
-extern struct inode_operations ext2_file_inode_operations;
+extern const struct inode_operations ext2_file_inode_operations;
extern const struct file_operations ext2_file_operations;
extern const struct file_operations ext2_xip_file_operations;
@@ -168,9 +168,9 @@
extern const struct address_space_operations ext2_nobh_aops;
/* namei.c */
-extern struct inode_operations ext2_dir_inode_operations;
-extern struct inode_operations ext2_special_inode_operations;
+extern const struct inode_operations ext2_dir_inode_operations;
+extern const struct inode_operations ext2_special_inode_operations;
/* symlink.c */
-extern struct inode_operations ext2_fast_symlink_inode_operations;
-extern struct inode_operations ext2_symlink_inode_operations;
+extern const struct inode_operations ext2_fast_symlink_inode_operations;
+extern const struct inode_operations ext2_symlink_inode_operations;
diff --git a/fs/ext2/file.c b/fs/ext2/file.c
index 2dba473..566d4e2 100644
--- a/fs/ext2/file.c
+++ b/fs/ext2/file.c
@@ -75,7 +75,7 @@
};
#endif
-struct inode_operations ext2_file_inode_operations = {
+const struct inode_operations ext2_file_inode_operations = {
.truncate = ext2_truncate,
#ifdef CONFIG_EXT2_FS_XATTR
.setxattr = generic_setxattr,
diff --git a/fs/ext2/namei.c b/fs/ext2/namei.c
index e1af5b4..e69beed 100644
--- a/fs/ext2/namei.c
+++ b/fs/ext2/namei.c
@@ -373,7 +373,7 @@
return err;
}
-struct inode_operations ext2_dir_inode_operations = {
+const struct inode_operations ext2_dir_inode_operations = {
.create = ext2_create,
.lookup = ext2_lookup,
.link = ext2_link,
@@ -393,7 +393,7 @@
.permission = ext2_permission,
};
-struct inode_operations ext2_special_inode_operations = {
+const struct inode_operations ext2_special_inode_operations = {
#ifdef CONFIG_EXT2_FS_XATTR
.setxattr = generic_setxattr,
.getxattr = generic_getxattr,
diff --git a/fs/ext2/symlink.c b/fs/ext2/symlink.c
index 1e67d87..4e2426e 100644
--- a/fs/ext2/symlink.c
+++ b/fs/ext2/symlink.c
@@ -28,7 +28,7 @@
return NULL;
}
-struct inode_operations ext2_symlink_inode_operations = {
+const struct inode_operations ext2_symlink_inode_operations = {
.readlink = generic_readlink,
.follow_link = page_follow_link_light,
.put_link = page_put_link,
@@ -40,7 +40,7 @@
#endif
};
-struct inode_operations ext2_fast_symlink_inode_operations = {
+const struct inode_operations ext2_fast_symlink_inode_operations = {
.readlink = generic_readlink,
.follow_link = ext2_follow_link,
#ifdef CONFIG_EXT2_FS_XATTR