From d0677992d2af3d65f1c1c21de3323d09d4891537 Mon Sep 17 00:00:00 2001 From: Steve French Date: Tue, 16 Jul 2019 18:55:38 -0500 Subject: cifs: add support for flock The flock system call locks the whole file rather than a byte range and so is currently emulated by various other file systems by simply sending a byte range lock for the whole file. Add flock handling for cifs.ko in similar way. xfstest generic/504 passes with this as well Signed-off-by: Steve French Reviewed-by: Pavel Shilovsky Reviewed-by: Ronnie Sahlberg --- fs/cifs/cifsfs.h | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/cifs/cifsfs.h') diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index bc4ca94137f2..93c757265105 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -108,6 +108,7 @@ extern ssize_t cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to); extern ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from); extern ssize_t cifs_direct_writev(struct kiocb *iocb, struct iov_iter *from); extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from); +extern int cifs_flock(struct file *pfile, int cmd, struct file_lock *plock); extern int cifs_lock(struct file *, int, struct file_lock *); extern int cifs_fsync(struct file *, loff_t, loff_t, int); extern int cifs_strict_fsync(struct file *, loff_t, loff_t, int); -- cgit v1.2.3-59-g8ed1b