[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>
diff --git a/fs/jfs/file.c b/fs/jfs/file.c
index aa9132d..f7f8eff 100644
--- a/fs/jfs/file.c
+++ b/fs/jfs/file.c
@@ -88,7 +88,7 @@
return 0;
}
-struct inode_operations jfs_file_inode_operations = {
+const struct inode_operations jfs_file_inode_operations = {
.truncate = jfs_truncate,
.setxattr = jfs_setxattr,
.getxattr = jfs_getxattr,
diff --git a/fs/jfs/jfs_inode.h b/fs/jfs/jfs_inode.h
index 0d06ccf..6802837 100644
--- a/fs/jfs/jfs_inode.h
+++ b/fs/jfs/jfs_inode.h
@@ -35,10 +35,10 @@
extern int jfs_get_block(struct inode *, sector_t, struct buffer_head *, int);
extern const struct address_space_operations jfs_aops;
-extern struct inode_operations jfs_dir_inode_operations;
+extern const struct inode_operations jfs_dir_inode_operations;
extern const struct file_operations jfs_dir_operations;
-extern struct inode_operations jfs_file_inode_operations;
+extern const struct inode_operations jfs_file_inode_operations;
extern const struct file_operations jfs_file_operations;
-extern struct inode_operations jfs_symlink_inode_operations;
+extern const struct inode_operations jfs_symlink_inode_operations;
extern struct dentry_operations jfs_ci_dentry_operations;
#endif /* _H_JFS_INODE */
diff --git a/fs/jfs/namei.c b/fs/jfs/namei.c
index 7ab4756..41c2047 100644
--- a/fs/jfs/namei.c
+++ b/fs/jfs/namei.c
@@ -1503,7 +1503,7 @@
return parent;
}
-struct inode_operations jfs_dir_inode_operations = {
+const struct inode_operations jfs_dir_inode_operations = {
.create = jfs_create,
.lookup = jfs_lookup,
.link = jfs_link,
diff --git a/fs/jfs/symlink.c b/fs/jfs/symlink.c
index cee43f3..4af1a05 100644
--- a/fs/jfs/symlink.c
+++ b/fs/jfs/symlink.c
@@ -29,7 +29,7 @@
return NULL;
}
-struct inode_operations jfs_symlink_inode_operations = {
+const struct inode_operations jfs_symlink_inode_operations = {
.readlink = generic_readlink,
.follow_link = jfs_follow_link,
.setxattr = jfs_setxattr,