Add helper locks_any_blockers to check if there is any blockers
for a file_lock.
Signed-off-by: Dai Ngo <dai.ngo@xxxxxxxxxx>
---
include/linux/fs.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 831b20430d6e..7f5756bfcc13 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1200,6 +1200,11 @@ extern void lease_unregister_notifier(struct notifier_block *);
struct files_struct;
extern void show_fd_locks(struct seq_file *f,
struct file *filp, struct files_struct *files);
+
+static inline bool locks_has_blockers_locked(struct file_lock *lck)
+{
+ return !list_empty(&lck->fl_blocked_requests);
+}
#else /* !CONFIG_FILE_LOCKING */
static inline int fcntl_getlk(struct file *file, unsigned int cmd,
struct flock __user *user)
@@ -1335,6 +1340,11 @@ static inline int lease_modify(struct file_lock *fl, int arg,
struct files_struct;
static inline void show_fd_locks(struct seq_file *f,
struct file *filp, struct files_struct *files) {}
+
+static inline bool locks_has_blockers_locked(struct file_lock *lck)
+{
+ return false;
+}
#endif /* !CONFIG_FILE_LOCKING */
static inline struct inode *file_inode(const struct file *f)
--
2.9.5
