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authorNicolai Stange <nicstange@gmail.com>2017-10-31 02:15:52 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-11-07 22:25:02 +0300
commitc9afbec27089cd6b4e621b639f41c7fc726c3bf1 (patch)
treebb66d582f6668101cdbca5e6a3592f2398271443 /include/linux/debugfs.h
parent7cda7b8f97da9382bb945d541a85cde58d5dac27 (diff)
downloadlinux-c9afbec27089cd6b4e621b639f41c7fc726c3bf1.tar.xz
debugfs: purge obsolete SRCU based removal protection
Purge the SRCU based file removal race protection in favour of the new, refcount based debugfs_file_get()/debugfs_file_put() API. Fixes: 49d200deaa68 ("debugfs: prevent access to removed files' private data") Signed-off-by: Nicolai Stange <nicstange@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/debugfs.h')
-rw-r--r--include/linux/debugfs.h19
1 files changed, 0 insertions, 19 deletions
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index c5eda259b9d6..9f821a43bb0d 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -23,7 +23,6 @@
struct device;
struct file_operations;
-struct srcu_struct;
struct debugfs_blob_wrapper {
void *data;
@@ -43,8 +42,6 @@ struct debugfs_regset32 {
extern struct dentry *arch_debugfs_dir;
-extern struct srcu_struct debugfs_srcu;
-
#define DEFINE_DEBUGFS_ATTRIBUTE(__fops, __get, __set, __fmt) \
static int __fops ## _open(struct inode *inode, struct file *file) \
{ \
@@ -90,11 +87,6 @@ struct dentry *debugfs_create_automount(const char *name,
void debugfs_remove(struct dentry *dentry);
void debugfs_remove_recursive(struct dentry *dentry);
-int debugfs_use_file_start(const struct dentry *dentry, int *srcu_idx)
- __acquires(&debugfs_srcu);
-
-void debugfs_use_file_finish(int srcu_idx) __releases(&debugfs_srcu);
-
const struct file_operations *debugfs_real_fops(const struct file *filp);
int debugfs_file_get(struct dentry *dentry);
@@ -227,17 +219,6 @@ static inline void debugfs_remove(struct dentry *dentry)
static inline void debugfs_remove_recursive(struct dentry *dentry)
{ }
-static inline int debugfs_use_file_start(const struct dentry *dentry,
- int *srcu_idx)
- __acquires(&debugfs_srcu)
-{
- return 0;
-}
-
-static inline void debugfs_use_file_finish(int srcu_idx)
- __releases(&debugfs_srcu)
-{ }
-
static inline int debugfs_file_get(struct dentry *dentry)
{
return 0;