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/sysv/file.c

diff --git a/fs/sysv/file.c b/fs/sysv/file.c
index 47a4b72..0732ddb 100644
--- a/fs/sysv/file.c
+++ b/fs/sysv/file.c
@@ -30,7 +30,7 @@
 	.sendfile	= generic_file_sendfile,
 };
 
-struct inode_operations sysv_file_inode_operations = {
+const struct inode_operations sysv_file_inode_operations = {
 	.truncate	= sysv_truncate,
 	.getattr	= sysv_getattr,
 };

fs/sysv/inode.c

diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index ead9864..13dd75c 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -142,7 +142,7 @@
 	}
 }
 
-static struct inode_operations sysv_symlink_inode_operations = {
+static const struct inode_operations sysv_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= page_follow_link_light,
 	.put_link	= page_put_link,

fs/sysv/namei.c

diff --git a/fs/sysv/namei.c b/fs/sysv/namei.c
index f7c08db..4e48abb 100644
--- a/fs/sysv/namei.c
+++ b/fs/sysv/namei.c
@@ -292,7 +292,7 @@
 /*
  * directories can handle most operations...
  */
-struct inode_operations sysv_dir_inode_operations = {
+const struct inode_operations sysv_dir_inode_operations = {
 	.create		= sysv_create,
 	.lookup		= sysv_lookup,
 	.link		= sysv_link,

fs/sysv/symlink.c

diff --git a/fs/sysv/symlink.c b/fs/sysv/symlink.c
index b85ce61..00d2f8a 100644
--- a/fs/sysv/symlink.c
+++ b/fs/sysv/symlink.c
@@ -14,7 +14,7 @@
 	return NULL;
 }
 
-struct inode_operations sysv_fast_symlink_inode_operations = {
+const struct inode_operations sysv_fast_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= sysv_follow_link,
 };

fs/sysv/sysv.h

diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h
index dcb18b2..a320edc 100644
--- a/fs/sysv/sysv.h
+++ b/fs/sysv/sysv.h
@@ -159,9 +159,9 @@
 extern ino_t sysv_inode_by_name(struct dentry *);
 
 
-extern struct inode_operations sysv_file_inode_operations;
-extern struct inode_operations sysv_dir_inode_operations;
-extern struct inode_operations sysv_fast_symlink_inode_operations;
+extern const struct inode_operations sysv_file_inode_operations;
+extern const struct inode_operations sysv_dir_inode_operations;
+extern const struct inode_operations sysv_fast_symlink_inode_operations;
 extern const struct file_operations sysv_file_operations;
 extern const struct file_operations sysv_dir_operations;
 extern const struct address_space_operations sysv_aops;