[PATCH] Make most file operations structs in fs/ const

This is a conversion to make the various file_operations structs in fs/
const.  Basically a regexp job, with a few manual fixups

The goal is both to increase correctness (harder to accidentally write to
shared datastructures) and reducing the false sharing of cachelines with
things that get dirty in .data (while .rodata is nicely read only and thus
cache clean)

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

4 files changed, 6 insertions, 6 deletions

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 0c9a2ee54c91..23d1f52eb1b8 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -922,7 +922,7 @@ static int fuse_dev_release(struct inode *inode, struct file *file)
         return 0;
 }
 
-struct file_operations fuse_dev_operations = {
+const struct file_operations fuse_dev_operations = {
         .owner          = THIS_MODULE,
         .llseek         = no_llseek,
         .read           = fuse_dev_read,
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index c72a8a97935c..256355b80256 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1170,7 +1170,7 @@ static struct inode_operations fuse_dir_inode_operations = {
         .removexattr    = fuse_removexattr,
 };
 
-static struct file_operations fuse_dir_operations = {
+static const struct file_operations fuse_dir_operations = {
         .llseek         = generic_file_llseek,
         .read           = generic_read_dir,
         .readdir        = fuse_readdir,
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 6f05379b0a0d..975f2697e866 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -12,7 +12,7 @@
 #include <linux/slab.h>
 #include <linux/kernel.h>
 
-static struct file_operations fuse_direct_io_file_operations;
+static const struct file_operations fuse_direct_io_file_operations;
 
 static int fuse_send_open(struct inode *inode, struct file *file, int isdir,
                           struct fuse_open_out *outargp)
@@ -611,7 +611,7 @@ static int fuse_set_page_dirty(struct page *page)
         return 0;
 }
 
-static struct file_operations fuse_file_operations = {
+static const struct file_operations fuse_file_operations = {
         .llseek         = generic_file_llseek,
         .read           = generic_file_read,
         .write          = generic_file_write,
@@ -623,7 +623,7 @@ static struct file_operations fuse_file_operations = {
         .sendfile       = generic_file_sendfile,
 };
 
-static struct file_operations fuse_direct_io_file_operations = {
+static const struct file_operations fuse_direct_io_file_operations = {
         .llseek         = generic_file_llseek,
         .read           = fuse_direct_read,
         .write          = fuse_direct_write,
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 4a83adfec968..a16a04fcf41e 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -346,7 +346,7 @@ static inline u64 get_node_id(struct inode *inode)
 }
 
 /** Device operations */
-extern struct file_operations fuse_dev_operations;
+extern const struct file_operations fuse_dev_operations;
 
 /**
  * This is the single global spinlock which protects FUSE's structures