locks: introduce locks_lock_inode_wait()

Users of the locks API commonly call either posix_lock_file_wait() or
flock_lock_file_wait() depending upon the lock type.  Add a new function
locks_lock_inode_wait() which will check and call the correct function for
the type of lock passed in.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 72d8a844c692..b064d4c0b233 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1059,6 +1059,7 @@ extern int vfs_test_lock(struct file *, struct file_lock *);
 extern int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_lock *);
 extern int vfs_cancel_lock(struct file *filp, struct file_lock *fl);
 extern int flock_lock_inode_wait(struct inode *inode, struct file_lock *fl);
+extern int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl);
 extern int __break_lease(struct inode *inode, unsigned int flags, unsigned int type);
 extern void lease_get_mtime(struct inode *, struct timespec *time);
 extern int generic_setlease(struct file *, long, struct file_lock **, void **priv);
@@ -1177,6 +1178,11 @@ static inline int flock_lock_inode_wait(struct inode *inode,
         return -ENOLCK;
 }
 
+static inline int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl)
+{
+        return -ENOLCK;
+}
+
 static inline int __break_lease(struct inode *inode, unsigned int mode, unsigned int type)
 {
         return 0;
@@ -1225,6 +1231,11 @@ static inline int flock_lock_file_wait(struct file *filp, struct file_lock *fl)
         return flock_lock_inode_wait(file_inode(filp), fl);
 }
 
+static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl)
+{
+        return locks_lock_inode_wait(file_inode(filp), fl);
+}
+
 struct fasync_struct {
         spinlock_t              fa_lock;
         int                     magic;