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authorArjan van de Ven <arjan@linux.intel.com>2007-02-12 00:55:36 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-12 09:48:46 -0800
commitda7071d7e32d15149cc513f096a3638097b66387 (patch)
treef56fb200090ad55b2e2a72c379b1eeea29795670 /net/sunrpc/cache.c
parent9a32144e9d7b4e21341174b1a83b82a82353be86 (diff)
downloadop-kernel-dev-da7071d7e32d15149cc513f096a3638097b66387.zip
op-kernel-dev-da7071d7e32d15149cc513f096a3638097b66387.tar.gz
[PATCH] mark struct file_operations const 8
Many struct file_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>
Diffstat (limited to 'net/sunrpc/cache.c')
-rw-r--r--net/sunrpc/cache.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index c80df45..8612044 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -282,9 +282,9 @@ static DEFINE_SPINLOCK(cache_list_lock);
static struct cache_detail *current_detail;
static int current_index;
-static struct file_operations cache_file_operations;
-static struct file_operations content_file_operations;
-static struct file_operations cache_flush_operations;
+static const struct file_operations cache_file_operations;
+static const struct file_operations content_file_operations;
+static const struct file_operations cache_flush_operations;
static void do_cache_clean(struct work_struct *work);
static DECLARE_DELAYED_WORK(cache_cleaner, do_cache_clean);
@@ -887,7 +887,7 @@ cache_release(struct inode *inode, struct file *filp)
-static struct file_operations cache_file_operations = {
+static const struct file_operations cache_file_operations = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.read = cache_read,
@@ -1245,7 +1245,7 @@ static int content_release(struct inode *inode, struct file *file)
return seq_release(inode, file);
}
-static struct file_operations content_file_operations = {
+static const struct file_operations content_file_operations = {
.open = content_open,
.read = seq_read,
.llseek = seq_lseek,
@@ -1297,7 +1297,7 @@ static ssize_t write_flush(struct file * file, const char __user * buf,
return count;
}
-static struct file_operations cache_flush_operations = {
+static const struct file_operations cache_flush_operations = {
.open = nonseekable_open,
.read = read_flush,
.write = write_flush,
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