commit c5ef1c42c51b1b5b4a401a6517bdda30933ddbaf
author Arjan van de Ven <arjan@linux.intel.com> Mon Feb 12 00:55:40 2007 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> Mon Feb 12 09:48:46 2007 -0800
tree e1a9804a8af427f700aaba4b386cf8679b317e83
parent 92e1d5be91a0e3ffa5c4697eeb09b2aa22792122

[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>

fs/ramfs/file-mmu.c

diff --git a/fs/ramfs/file-mmu.c b/fs/ramfs/file-mmu.c
index b935a3d..2f14774 100644
--- a/fs/ramfs/file-mmu.c
+++ b/fs/ramfs/file-mmu.c
@@ -45,6 +45,6 @@
 	.llseek		= generic_file_llseek,
 };
 
-struct inode_operations ramfs_file_inode_operations = {
+const struct inode_operations ramfs_file_inode_operations = {
 	.getattr	= simple_getattr,
 };

fs/ramfs/file-nommu.c

diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
index d05e09ac..d3fd7c6 100644
--- a/fs/ramfs/file-nommu.c
+++ b/fs/ramfs/file-nommu.c
@@ -47,7 +47,7 @@
 	.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,
 };

fs/ramfs/inode.c

diff --git a/fs/ramfs/inode.c b/fs/ramfs/inode.c
index 2faf4cd..7a96b1d6 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 @@
 	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,

fs/ramfs/internal.h

diff --git a/fs/ramfs/internal.h b/fs/ramfs/internal.h
index c2bb58e..af7cc07 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;