[3/3] nfsd: clients don't need to break their own delegations

Commit Message

J. Bruce Fields Sept. 7, 2017, 10:01 p.m. UTC

On Mon, Aug 28, 2017 at 02:32:53PM +1000, NeilBrown wrote:
> /* legacy typedef, should eventually be removed */
> typedef void *fl_owner_t;
> 
> 
> Maybe you could do the world a favor and remove fl_owner_t in a
> preliminary patch :-)

Partly scripted, still a bit tedious, but I think it's right.  Honestly
I don't know what the motivation for the comment was, though.  Are there
no documentation or type-checking benefits to having the typdef?

The main annoyance was having this defined as a files_struct pointer,
which Christoph fixed some time ago.

--b.

Comments

NeilBrown Sept. 8, 2017, 5:06 a.m. UTC | #1

On Thu, Sep 07 2017, J. Bruce Fields wrote:

> On Mon, Aug 28, 2017 at 02:32:53PM +1000, NeilBrown wrote:
>> /* legacy typedef, should eventually be removed */
>> typedef void *fl_owner_t;
>> 
>> 
>> Maybe you could do the world a favor and remove fl_owner_t in a
>> preliminary patch :-)
>
> Partly scripted, still a bit tedious, but I think it's right.  Honestly
> I don't know what the motivation for the comment was, though.  Are there
> no documentation or type-checking benefits to having the typdef?

If it was an established practice throughout the kernel to use typedefs
to differentiate different 'void *', then maybe there would be a
documentation benefit.  Given the wide use of casts (you removed 9 I
think), I don't think there are significant type-checking benefits.

I don't like fl_owner_t because when you see it in the general context
of the kernel, you are likely to think that it means something
important.  Then you go hunting and find "Oh, it is just a void*". (That
is what happened to me:-).  The second reason that I don't like it is
that it requires all those casts that you removed.

Reviewed-by: NeilBrown <[e-mail]>

Thanks,
NeilBrown


>
> The main annoyance was having this defined as a files_struct pointer,
> which Christoph fixed some time ago.
>
> --b.
>

Patch

diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index 73e7d91f03dc..758ca1591b0c 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -864,7 +864,7 @@  struct file_operations {
 	int (*mmap) (struct file *, struct vm_area_struct *);
 	int (*mremap)(struct file *, struct vm_area_struct *);
 	int (*open) (struct inode *, struct file *);
-	int (*flush) (struct file *, fl_owner_t id);
+	int (*flush) (struct file *, void *id);
 	int (*release) (struct inode *, struct file *);
 	int (*fsync) (struct file *, loff_t, loff_t, int datasync);
 	int (*fasync) (int, struct file *, int);
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 09f86ebfcc7b..35a185ac0de3 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -1809,7 +1809,7 @@  pfm_syswide_cleanup_other_cpu(pfm_context_t *ctx)
  * When caller is self-monitoring, the context is unloaded.
  */
 static int
-pfm_flush(struct file *filp, fl_owner_t id)
+pfm_flush(struct file *filp, void *id)
 {
 	pfm_context_t *ctx;
 	struct task_struct *task;
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index ae2f740a82f1..8783335b3b85 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -1720,7 +1720,7 @@  static unsigned int spufs_mfc_poll(struct file *file,poll_table *wait)
 	return mask;
 }
 
-static int spufs_mfc_flush(struct file *file, fl_owner_t id)
+static int spufs_mfc_flush(struct file *file, void *id)
 {
 	struct spu_context *ctx = file->private_data;
 	int ret;
diff --git a/arch/tile/kernel/hardwall.c b/arch/tile/kernel/hardwall.c
index 2fd1694ac1d0..b2cf21d1edb0 100644
--- a/arch/tile/kernel/hardwall.c
+++ b/arch/tile/kernel/hardwall.c
@@ -1030,7 +1030,7 @@  static long hardwall_compat_ioctl(struct file *file,
 #endif
 
 /* The user process closed the file; revoke access to user networks. */
-static int hardwall_flush(struct file *file, fl_owner_t owner)
+static int hardwall_flush(struct file *file, void *owner)
 {
 	struct hardwall_info *info = file->private_data;
 	struct task_struct *task, *tmp;
diff --git a/drivers/android/binder.c b/drivers/android/binder.c
index f7665c31feca..02bfce18c912 100644
--- a/drivers/android/binder.c
+++ b/drivers/android/binder.c
@@ -3503,7 +3503,7 @@  static int binder_open(struct inode *nodp, struct file *filp)
 	return 0;
 }
 
-static int binder_flush(struct file *filp, fl_owner_t id)
+static int binder_flush(struct file *filp, void *id)
 {
 	struct binder_proc *proc = filp->private_data;
 
diff --git a/drivers/char/ps3flash.c b/drivers/char/ps3flash.c
index b526dc15c271..5a03dd0eb2f1 100644
--- a/drivers/char/ps3flash.c
+++ b/drivers/char/ps3flash.c
@@ -281,7 +281,7 @@  static ssize_t ps3flash_kernel_write(const void *buf, size_t count,
 	return res;
 }
 
-static int ps3flash_flush(struct file *file, fl_owner_t id)
+static int ps3flash_flush(struct file *file, void *id)
 {
 	return ps3flash_writeback(ps3flash_dev);
 }
diff --git a/drivers/char/xillybus/xillybus_core.c b/drivers/char/xillybus/xillybus_core.c
index b6c9cdead7f3..7e04a9df51e3 100644
--- a/drivers/char/xillybus/xillybus_core.c
+++ b/drivers/char/xillybus/xillybus_core.c
@@ -1156,7 +1156,7 @@  static int xillybus_myflush(struct xilly_channel *channel, long timeout)
 	return rc;
 }
 
-static int xillybus_flush(struct file *filp, fl_owner_t id)
+static int xillybus_flush(struct file *filp, void *id)
 {
 	if (!(filp->f_mode & FMODE_WRITE))
 		return 0;
diff --git a/drivers/firmware/efi/capsule-loader.c b/drivers/firmware/efi/capsule-loader.c
index ec8ac5c4dd84..f4d0c4805ec7 100644
--- a/drivers/firmware/efi/capsule-loader.c
+++ b/drivers/firmware/efi/capsule-loader.c
@@ -225,7 +225,7 @@  static ssize_t efi_capsule_write(struct file *file, const char __user *buff,
  *	will be treated as upload termination and will free those completed
  *	buffer pages and -ECANCELED will be returned.
  **/
-static int efi_capsule_flush(struct file *file, fl_owner_t id)
+static int efi_capsule_flush(struct file *file, void *id)
 {
 	int ret = 0;
 	struct capsule_info *cap_info = file->private_data;
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 925571475005..85117fecc292 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -342,7 +342,7 @@  static int evdev_fasync(int fd, struct file *file, int on)
 	return fasync_helper(fd, file, on, &client->fasync);
 }
 
-static int evdev_flush(struct file *file, fl_owner_t id)
+static int evdev_flush(struct file *file, void *id)
 {
 	struct evdev_client *client = file->private_data;
 	struct evdev *evdev = client->evdev;
diff --git a/drivers/misc/mic/scif/scif_fd.c b/drivers/misc/mic/scif/scif_fd.c
index f7e826142a72..c446a1450714 100644
--- a/drivers/misc/mic/scif/scif_fd.c
+++ b/drivers/misc/mic/scif/scif_fd.c
@@ -48,7 +48,7 @@  static unsigned int scif_fdpoll(struct file *f, poll_table *wait)
 	return __scif_pollfd(f, wait, priv);
 }
 
-static int scif_fdflush(struct file *f, fl_owner_t id)
+static int scif_fdflush(struct file *f, void *id)
 {
 	struct scif_endpt *ep = f->private_data;
 
diff --git a/drivers/scsi/osst.c b/drivers/scsi/osst.c
index 929ee7e88120..366bc57f0bfb 100644
--- a/drivers/scsi/osst.c
+++ b/drivers/scsi/osst.c
@@ -4822,7 +4822,7 @@  static int os_scsi_tape_open(struct inode * inode, struct file * filp)
 
 
 /* Flush the tape buffer before close */
-static int os_scsi_tape_flush(struct file * filp, fl_owner_t id)
+static int os_scsi_tape_flush(struct file * filp, void *id)
 {
 	int		      result = 0, result2;
 	struct osst_tape    * STp    = filp->private_data;
diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
index 8e5013d9cad4..7d97641fcca9 100644
--- a/drivers/scsi/st.c
+++ b/drivers/scsi/st.c
@@ -1338,7 +1338,7 @@  static int st_open(struct inode *inode, struct file *filp)
 
 
 /* Flush the tape buffer before close */
-static int st_flush(struct file *filp, fl_owner_t id)
+static int st_flush(struct file *filp, void *id)
 {
 	int result = 0, result2;
 	unsigned char cmd[MAX_COMMAND_SIZE];
diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index ab1c85c1ed38..5f12ea3f26d3 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -2278,7 +2278,7 @@  static loff_t ll_file_seek(struct file *file, loff_t offset, int origin)
 					ll_file_maxbytes(inode), eof);
 }
 
-static int ll_flush(struct file *file, fl_owner_t id)
+static int ll_flush(struct file *file, void *id)
 {
 	struct inode *inode = file_inode(file);
 	struct ll_inode_info *lli = ll_i2info(inode);
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 8f972247b1c1..cb248f3d9565 100644
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -582,7 +582,7 @@  static ssize_t wdm_read
 	return rv;
 }
 
-static int wdm_flush(struct file *file, fl_owner_t id)
+static int wdm_flush(struct file *file, void *id)
 {
 	struct wdm_device *desc = file->private_data;
 
diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c
index bb0bd732e29a..547fe43678e8 100644
--- a/drivers/usb/usb-skeleton.c
+++ b/drivers/usb/usb-skeleton.c
@@ -136,7 +136,7 @@  static int skel_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static int skel_flush(struct file *file, fl_owner_t id)
+static int skel_flush(struct file *file, void *id)
 {
 	struct usb_skel *dev;
 	int res;
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 82e16556afea..210838d2fa85 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -728,7 +728,7 @@  extern int afs_writepages(struct address_space *, struct writeback_control *);
 extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *);
 extern ssize_t afs_file_write(struct kiocb *, struct iov_iter *);
 extern int afs_writeback_all(struct afs_vnode *);
-extern int afs_flush(struct file *, fl_owner_t);
+extern int afs_flush(struct file *, void *);
 extern int afs_fsync(struct file *, loff_t, loff_t, int);
 
 /*
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 2d2fccd5044b..a38f03bd6859 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -767,7 +767,7 @@  int afs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
  * Flush out all outstanding writes on a file opened for writing when it is
  * closed.
  */
-int afs_flush(struct file *file, fl_owner_t id)
+int afs_flush(struct file *file, void *id)
 {
 	_enter("");
 
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 30bf89b1fd9a..914e5af73d32 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -108,7 +108,7 @@  extern ssize_t cifs_strict_writev(struct kiocb *iocb, struct iov_iter *from);
 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);
-extern int cifs_flush(struct file *, fl_owner_t id);
+extern int cifs_flush(struct file *, void *id);
 extern int cifs_file_mmap(struct file * , struct vm_area_struct *);
 extern int cifs_file_strict_mmap(struct file * , struct vm_area_struct *);
 extern const struct file_operations cifs_dir_ops;
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index bc09df6b473a..bda1fdf46937 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1165,7 +1165,7 @@  cifs_push_mandatory_locks(struct cifsFileInfo *cfile)
 }
 
 static __u32
-hash_lockowner(fl_owner_t owner)
+hash_lockowner(void *owner)
 {
 	return cifs_lock_secret ^ hash32_ptr((const void *)owner);
 }
@@ -2399,7 +2399,7 @@  int cifs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
  * As file closes, flush all cached write data for this inode checking
  * for write behind errors.
  */
-int cifs_flush(struct file *file, fl_owner_t id)
+int cifs_flush(struct file *file, void *id)
 {
 	struct inode *inode = file_inode(file);
 	int rc = 0;
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index ca4e83750214..535039b38da8 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -290,7 +290,7 @@  static int ecryptfs_dir_open(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static int ecryptfs_flush(struct file *file, fl_owner_t td)
+static int ecryptfs_flush(struct file *file, void *td)
 {
 	struct file *lower_file = ecryptfs_file_to_lower(file);
 
diff --git a/fs/exofs/file.c b/fs/exofs/file.c
index 28645f0640f7..d9e3c7ca3a0c 100644
--- a/fs/exofs/file.c
+++ b/fs/exofs/file.c
@@ -58,7 +58,7 @@  static int exofs_file_fsync(struct file *filp, loff_t start, loff_t end,
 	return ret;
 }
 
-static int exofs_flush(struct file *file, fl_owner_t id)
+static int exofs_flush(struct file *file, void *id)
 {
 	int ret = vfs_fsync(file, 0);
 	/* TODO: Flush the OSD target */
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 3ee4fdc3da9e..89fe98020374 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -254,8 +254,7 @@  void fuse_release_common(struct file *file, int opcode)
 	if (ff->flock) {
 		struct fuse_release_in *inarg = &req->misc.release.in;
 		inarg->release_flags |= FUSE_RELEASE_FLOCK_UNLOCK;
-		inarg->lock_owner = fuse_lock_owner_id(ff->fc,
-						       (fl_owner_t) file);
+		inarg->lock_owner = fuse_lock_owner_id(ff->fc, file);
 	}
 	/* Hold inode until release is finished */
 	req->misc.release.inode = igrab(file_inode(file));
@@ -307,7 +306,7 @@  EXPORT_SYMBOL_GPL(fuse_sync_release);
  * Scramble the ID space with XTEA, so that the value of the files_struct
  * pointer is not exposed to userspace.
  */
-u64 fuse_lock_owner_id(struct fuse_conn *fc, fl_owner_t id)
+u64 fuse_lock_owner_id(struct fuse_conn *fc, void *id)
 {
 	u32 *k = fc->scramble_key;
 	u64 v = (unsigned long) id;
@@ -390,7 +389,7 @@  static void fuse_sync_writes(struct inode *inode)
 	fuse_release_nowrite(inode);
 }
 
-static int fuse_flush(struct file *file, fl_owner_t id)
+static int fuse_flush(struct file *file, void *id)
 {
 	struct inode *inode = file_inode(file);
 	struct fuse_conn *fc = get_fuse_conn(inode);
@@ -643,7 +642,7 @@  static size_t fuse_async_req_send(struct fuse_conn *fc, struct fuse_req *req,
 }
 
 static size_t fuse_send_read(struct fuse_req *req, struct fuse_io_priv *io,
-			     loff_t pos, size_t count, fl_owner_t owner)
+			     loff_t pos, size_t count, void *owner)
 {
 	struct file *file = io->file;
 	struct fuse_file *ff = file->private_data;
@@ -955,7 +954,7 @@  static void fuse_write_fill(struct fuse_req *req, struct fuse_file *ff,
 }
 
 static size_t fuse_send_write(struct fuse_req *req, struct fuse_io_priv *io,
-			      loff_t pos, size_t count, fl_owner_t owner)
+			      loff_t pos, size_t count, void *owner)
 {
 	struct file *file = io->file;
 	struct fuse_file *ff = file->private_data;
@@ -1348,7 +1347,7 @@  ssize_t fuse_direct_io(struct fuse_io_priv *io, struct iov_iter *iter,
 
 	while (count) {
 		size_t nres;
-		fl_owner_t owner = current->files;
+		void *owner = current->files;
 		size_t nbytes = min(count, nmax);
 		err = fuse_get_user_pages(req, iter, &nbytes, write);
 		if (err && !nbytes)
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index 1bd7ffdad593..5f28f493b40a 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -900,7 +900,7 @@  int fuse_valid_type(int m);
  */
 int fuse_allow_current_process(struct fuse_conn *fc);
 
-u64 fuse_lock_owner_id(struct fuse_conn *fc, fl_owner_t id);
+u64 fuse_lock_owner_id(struct fuse_conn *fc, void *id);
 
 void fuse_update_ctime(struct inode *inode);
 
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index 066ac313ae5c..1734c05f3182 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -81,7 +81,7 @@  static inline uint32_t __nlm_alloc_pid(struct nlm_host *host)
 	return res;
 }
 
-static struct nlm_lockowner *__nlm_find_lockowner(struct nlm_host *host, fl_owner_t owner)
+static struct nlm_lockowner *__nlm_find_lockowner(struct nlm_host *host, void *owner)
 {
 	struct nlm_lockowner *lockowner;
 	list_for_each_entry(lockowner, &host->h_lockowners, list) {
@@ -92,7 +92,7 @@  static struct nlm_lockowner *__nlm_find_lockowner(struct nlm_host *host, fl_owne
 	return NULL;
 }
 
-static struct nlm_lockowner *nlm_find_lockowner(struct nlm_host *host, fl_owner_t owner)
+static struct nlm_lockowner *nlm_find_lockowner(struct nlm_host *host, void *owner)
 {
 	struct nlm_lockowner *res, *new = NULL;
 
diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c
index 82925f17ec45..2d72631ea968 100644
--- a/fs/lockd/svc4proc.c
+++ b/fs/lockd/svc4proc.c
@@ -45,7 +45,7 @@  nlm4svc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
 
 		/* Set up the missing parts of the file_lock structure */
 		lock->fl.fl_file  = file->f_file;
-		lock->fl.fl_owner = (fl_owner_t) host;
+		lock->fl.fl_owner = host;
 		lock->fl.fl_lmops = &nlmsvc_lock_operations;
 	}
 
diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
index 07915162581d..655a8daee20e 100644
--- a/fs/lockd/svcproc.c
+++ b/fs/lockd/svcproc.c
@@ -75,7 +75,7 @@  nlmsvc_retrieve_args(struct svc_rqst *rqstp, struct nlm_args *argp,
 
 		/* Set up the missing parts of the file_lock structure */
 		lock->fl.fl_file  = file->f_file;
-		lock->fl.fl_owner = (fl_owner_t) host;
+		lock->fl.fl_owner = host;
 		lock->fl.fl_lmops = &nlmsvc_lock_operations;
 	}
 
diff --git a/fs/locks.c b/fs/locks.c
index a3de5b96c81c..9a3c476f163a 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -2429,7 +2429,7 @@  int fcntl_setlk64(unsigned int fd, struct file *filp, unsigned int cmd,
  * from the task's fd array.  POSIX locks belonging to this task
  * are deleted at this time.
  */
-void locks_remove_posix(struct file *filp, fl_owner_t owner)
+void locks_remove_posix(struct file *filp, void *owner)
 {
 	int error;
 	struct inode *inode = locks_inode(filp);
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index af330c31f627..bca440fc09ff 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -136,7 +136,7 @@  EXPORT_SYMBOL_GPL(nfs_file_llseek);
  * Flush all dirty pages, and check for write errors.
  */
 static int
-nfs_file_flush(struct file *file, fl_owner_t id)
+nfs_file_flush(struct file *file, void *id)
 {
 	struct inode	*inode = file_inode(file);
 
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 109279d6d91b..bb2cc33c3753 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -901,7 +901,7 @@  struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry,
 	ctx->mode = f_mode;
 	ctx->flags = 0;
 	ctx->error = 0;
-	ctx->flock_owner = (fl_owner_t)filp;
+	ctx->flock_owner = filp;
 	nfs_init_lock_context(&ctx->lock_context);
 	ctx->lock_context.open_context = ctx;
 	INIT_LIST_HEAD(&ctx->list);
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 40bd05f05e74..0fbe16684519 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -145,7 +145,7 @@  struct nfs4_lock_state {
 	struct nfs_seqid_counter	ls_seqid;
 	nfs4_stateid		ls_stateid;
 	atomic_t		ls_count;
-	fl_owner_t		ls_owner;
+	void *			ls_owner;
 };
 
 /* bits for nfs4_state->flags */
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index 0efba77789b9..1e09d9e4dd20 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -107,7 +107,7 @@  nfs4_file_open(struct inode *inode, struct file *filp)
  * Flush all dirty pages, and check for write errors.
  */
 static int
-nfs4_file_flush(struct file *file, fl_owner_t id)
+nfs4_file_flush(struct file *file, void *id)
 {
 	struct inode	*inode = file_inode(file);
 
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 0378e2257ca7..f04a501a6ae9 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -813,7 +813,7 @@  void nfs4_close_sync(struct nfs4_state *state, fmode_t fmode)
  */
 static struct nfs4_lock_state *
 __nfs4_find_lock_state(struct nfs4_state *state,
-		       fl_owner_t fl_owner, fl_owner_t fl_owner2)
+		       void *fl_owner, void *fl_owner2)
 {
 	struct nfs4_lock_state *pos, *ret = NULL;
 	list_for_each_entry(pos, &state->lock_states, ls_locks) {
@@ -834,7 +834,7 @@  __nfs4_find_lock_state(struct nfs4_state *state,
  * exists, return an uninitialized one.
  *
  */
-static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, fl_owner_t fl_owner)
+static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, void *fl_owner)
 {
 	struct nfs4_lock_state *lsp;
 	struct nfs_server *server = state->owner->so_server;
@@ -868,7 +868,7 @@  void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp
  * exists, return an uninitialized one.
  *
  */
-static struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, fl_owner_t owner)
+static struct nfs4_lock_state *nfs4_get_lock_state(struct nfs4_state *state, void *owner)
 {
 	struct nfs4_lock_state *lsp, *new = NULL;
 	
@@ -959,7 +959,7 @@  static int nfs4_copy_lock_stateid(nfs4_stateid *dst,
 		const struct nfs_lock_context *l_ctx)
 {
 	struct nfs4_lock_state *lsp;
-	fl_owner_t fl_owner, fl_flock_owner;
+	void *fl_owner, fl_flock_owner;
 	int ret = -ENOENT;
 
 	if (l_ctx == NULL)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index b50a7492f47f..b0126767b5b5 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1195,7 +1195,7 @@  static void nfs4_free_lock_stateid(struct nfs4_stid *stid)
 
 	file = find_any_file(stp->st_stid.sc_file);
 	if (file)
-		filp_close(file, (fl_owner_t)lo);
+		filp_close(file, lo);
 	nfs4_free_ol_stateid(stid);
 }
 
@@ -4183,7 +4183,7 @@  static struct file_lock *nfs4_alloc_init_lease(struct nfs4_file *fp, int flag)
 	fl->fl_flags = FL_DELEG;
 	fl->fl_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK;
 	fl->fl_end = OFFSET_MAX;
-	fl->fl_owner = (fl_owner_t)fp;
+	fl->fl_owner = fp;
 	fl->fl_pid = current->tgid;
 	return fl;
 }
@@ -5446,8 +5446,8 @@  nfs4_transform_lock_offset(struct file_lock *lock)
 		lock->fl_end = OFFSET_MAX;
 }
 
-static fl_owner_t
-nfsd4_fl_get_owner(fl_owner_t owner)
+static void *
+nfsd4_fl_get_owner(void *owner)
 {
 	struct nfs4_lockowner *lo = (struct nfs4_lockowner *)owner;
 
@@ -5456,7 +5456,7 @@  nfsd4_fl_get_owner(fl_owner_t owner)
 }
 
 static void
-nfsd4_fl_put_owner(fl_owner_t owner)
+nfsd4_fl_put_owner(void *owner)
 {
 	struct nfs4_lockowner *lo = (struct nfs4_lockowner *)owner;
 
@@ -5886,7 +5886,7 @@  nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 
 	file_lock = &nbl->nbl_lock;
 	file_lock->fl_type = fl_type;
-	file_lock->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(&lock_sop->lo_owner));
+	file_lock->fl_owner = lockowner(nfs4_get_stateowner(&lock_sop->lo_owner));
 	file_lock->fl_pid = current->tgid;
 	file_lock->fl_file = filp;
 	file_lock->fl_flags = fl_flags;
@@ -6040,7 +6040,7 @@  nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 
 	lo = find_lockowner_str(cstate->clp, &lockt->lt_owner);
 	if (lo)
-		file_lock->fl_owner = (fl_owner_t)lo;
+		file_lock->fl_owner = lo;
 	file_lock->fl_pid = current->tgid;
 	file_lock->fl_flags = FL_POSIX;
 
@@ -6102,7 +6102,7 @@  nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
 	}
 
 	file_lock->fl_type = F_UNLCK;
-	file_lock->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(stp->st_stateowner));
+	file_lock->fl_owner = lockowner(nfs4_get_stateowner(stp->st_stateowner));
 	file_lock->fl_pid = current->tgid;
 	file_lock->fl_file = filp;
 	file_lock->fl_flags = FL_POSIX;
@@ -6161,7 +6161,7 @@  check_for_locks(struct nfs4_file *fp, struct nfs4_lockowner *lowner)
 	if (flctx && !list_empty_careful(&flctx->flc_posix)) {
 		spin_lock(&flctx->flc_lock);
 		list_for_each_entry(fl, &flctx->flc_posix, fl_list) {
-			if (fl->fl_owner == (fl_owner_t)lowner) {
+			if (fl->fl_owner == lowner) {
 				status = true;
 				break;
 			}
diff --git a/fs/notify/dnotify/dnotify.c b/fs/notify/dnotify/dnotify.c
index 2430a0415995..a0c804f75435 100644
--- a/fs/notify/dnotify/dnotify.c
+++ b/fs/notify/dnotify/dnotify.c
@@ -145,7 +145,7 @@  static struct fsnotify_ops dnotify_fsnotify_ops = {
  * dnotify_struct.  If that was the last dnotify_struct also remove the
  * fsnotify_mark.
  */
-void dnotify_flush(struct file *filp, fl_owner_t id)
+void dnotify_flush(struct file *filp, void *id)
 {
 	struct fsnotify_mark *fsn_mark;
 	struct dnotify_mark *dn_mark;
@@ -223,7 +223,7 @@  static __u32 convert_arg(unsigned long arg)
  * that list, or it |= the mask onto an existing dnofiy_struct.
  */
 static int attach_dn(struct dnotify_struct *dn, struct dnotify_mark *dn_mark,
-		     fl_owner_t id, int fd, struct file *filp, __u32 mask)
+		     void *id, int fd, struct file *filp, __u32 mask)
 {
 	struct dnotify_struct *odn;
 
@@ -259,7 +259,7 @@  int fcntl_dirnotify(int fd, struct file *filp, unsigned long arg)
 	struct fsnotify_mark *new_fsn_mark, *fsn_mark;
 	struct dnotify_struct *dn;
 	struct inode *inode;
-	fl_owner_t id = current->files;
+	void *id = current->files;
 	struct file *f;
 	int destroy = 0, error = 0;
 	__u32 mask;
diff --git a/fs/open.c b/fs/open.c
index 946c646b39b0..7e9d537e1d32 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -1119,7 +1119,7 @@  SYSCALL_DEFINE2(creat, const char __user *, pathname, umode_t, mode)
  * "id" is the POSIX thread ID. We use the
  * files pointer for this..
  */
-int filp_close(struct file *filp, fl_owner_t id)
+int filp_close(struct file *filp, void *id)
 {
 	int retval = 0;
 
diff --git a/include/linux/dnotify.h b/include/linux/dnotify.h
index 3290555a52ee..5c6b6004f2ca 100644
--- a/include/linux/dnotify.h
+++ b/include/linux/dnotify.h
@@ -13,7 +13,7 @@  struct dnotify_struct {
 	__u32			dn_mask;
 	int			dn_fd;
 	struct file *		dn_filp;
-	fl_owner_t		dn_owner;
+	void *			dn_owner;
 };
 
 #ifdef __KERNEL__
@@ -29,12 +29,12 @@  struct dnotify_struct {
 			    FS_MOVED_FROM | FS_MOVED_TO)
 
 extern int dir_notify_enable;
-extern void dnotify_flush(struct file *, fl_owner_t);
+extern void dnotify_flush(struct file *, void *);
 extern int fcntl_dirnotify(int, struct file *, unsigned long);
 
 #else
 
-static inline void dnotify_flush(struct file *filp, fl_owner_t id)
+static inline void dnotify_flush(struct file *filp, void *id)
 {
 }
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 2261728cc900..d0c19bb27f79 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -933,9 +933,6 @@  static inline struct file *get_file(struct file *f)
  */
 #define FILE_LOCK_DEFERRED 1
 
-/* legacy typedef, should eventually be removed */
-typedef void *fl_owner_t;
-
 struct file_lock;
 
 struct file_lock_operations {
@@ -946,8 +943,8 @@  struct file_lock_operations {
 struct lock_manager_operations {
 	int (*lm_compare_owner)(struct file_lock *, struct file_lock *);
 	unsigned long (*lm_owner_key)(struct file_lock *);
-	fl_owner_t (*lm_get_owner)(fl_owner_t);
-	void (*lm_put_owner)(fl_owner_t);
+	void *(*lm_get_owner)(void *);
+	void (*lm_put_owner)(void *);
 	void (*lm_notify)(struct file_lock *);	/* unblock callback */
 	int (*lm_grant)(struct file_lock *, int);
 	bool (*lm_break)(struct file_lock *);
@@ -996,7 +993,7 @@  struct file_lock {
 	struct list_head fl_list;	/* link into file_lock_context */
 	struct hlist_node fl_link;	/* node in global lists */
 	struct list_head fl_block;	/* circular list of blocked processes */
-	fl_owner_t fl_owner;
+	void *fl_owner;
 	unsigned int fl_flags;
 	unsigned char fl_type;
 	unsigned int fl_pid;
@@ -1073,7 +1070,7 @@  extern void locks_init_lock(struct file_lock *);
 extern struct file_lock * locks_alloc_lock(void);
 extern void locks_copy_lock(struct file_lock *, struct file_lock *);
 extern void locks_copy_conflock(struct file_lock *, struct file_lock *);
-extern void locks_remove_posix(struct file *, fl_owner_t);
+extern void locks_remove_posix(struct file *, void *);
 extern void locks_remove_file(struct file *);
 extern void locks_release_private(struct file_lock *);
 extern void posix_test_lock(struct file *, struct file_lock *);
@@ -1147,7 +1144,7 @@  static inline void locks_copy_lock(struct file_lock *new, struct file_lock *fl)
 	return;
 }
 
-static inline void locks_remove_posix(struct file *filp, fl_owner_t owner)
+static inline void locks_remove_posix(struct file *filp, void *owner)
 {
 	return;
 }
@@ -1682,7 +1679,7 @@  struct file_operations {
 	long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
 	int (*mmap) (struct file *, struct vm_area_struct *);
 	int (*open) (struct inode *, struct file *);
-	int (*flush) (struct file *, fl_owner_t id);
+	int (*flush) (struct file *, void *id);
 	int (*release) (struct inode *, struct file *);
 	int (*fsync) (struct file *, loff_t, loff_t, int datasync);
 	int (*fasync) (int, struct file *, int);
@@ -2412,7 +2409,7 @@  extern struct file *filp_open(const char *, int, umode_t);
 extern struct file *file_open_root(struct dentry *, struct vfsmount *,
 				   const char *, int, umode_t);
 extern struct file * dentry_open(const struct path *, int, const struct cred *);
-extern int filp_close(struct file *, fl_owner_t id);
+extern int filp_close(struct file *, void *id);
 
 extern struct filename *getname_flags(const char __user *, int, int *);
 extern struct filename *getname(const char __user *);
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index 3eca67728366..c7340e4bcd23 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -117,14 +117,14 @@  static inline struct sockaddr *nlm_srcaddr(const struct nlm_host *host)
 }
 
 /*
- * Map an fl_owner_t into a unique 32-bit "pid"
+ * Map a lock owner into a unique 32-bit "pid"
  */
 struct nlm_lockowner {
 	struct list_head list;
 	atomic_t count;
 
 	struct nlm_host *host;
-	fl_owner_t owner;
+	void *owner;
 	uint32_t pid;
 };
 
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 5cc91d6381a3..cfd37076fc4b 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -59,14 +59,14 @@  struct nfs_lock_context {
 	atomic_t count;
 	struct list_head list;
 	struct nfs_open_context *open_context;
-	fl_owner_t lockowner;
+	void *lockowner;
 	atomic_t io_count;
 };
 
 struct nfs4_state;
 struct nfs_open_context {
 	struct nfs_lock_context lock_context;
-	fl_owner_t flock_owner;
+	void *flock_owner;
 	struct dentry *dentry;
 	struct rpc_cred *cred;
 	struct nfs4_state *state;
diff --git a/include/trace/events/filelock.h b/include/trace/events/filelock.h
index 63a7680347cb..10a8b5a1b235 100644
--- a/include/trace/events/filelock.h
+++ b/include/trace/events/filelock.h
@@ -68,7 +68,7 @@  DECLARE_EVENT_CLASS(filelock_lock,
 		__field(unsigned long, i_ino)
 		__field(dev_t, s_dev)
 		__field(struct file_lock *, fl_next)
-		__field(fl_owner_t, fl_owner)
+		__field(void *, fl_owner)
 		__field(unsigned int, fl_pid)
 		__field(unsigned int, fl_flags)
 		__field(unsigned char, fl_type)
@@ -122,7 +122,7 @@  DECLARE_EVENT_CLASS(filelock_lease,
 		__field(unsigned long, i_ino)
 		__field(dev_t, s_dev)
 		__field(struct file_lock *, fl_next)
-		__field(fl_owner_t, fl_owner)
+		__field(void *, fl_owner)
 		__field(unsigned int, fl_flags)
 		__field(unsigned char, fl_type)
 		__field(unsigned long, fl_break_time)
@@ -175,7 +175,7 @@  TRACE_EVENT(generic_add_lease,
 		__field(int, dcount)
 		__field(int, icount)
 		__field(dev_t, s_dev)
-		__field(fl_owner_t, fl_owner)
+		__field(void *, fl_owner)
 		__field(unsigned int, fl_flags)
 		__field(unsigned char, fl_type)
 	),
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index eb1391b52c6f..d339f60223b5 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -507,7 +507,7 @@  static ssize_t mqueue_read_file(struct file *filp, char __user *u_data,
 	return ret;
 }
 
-static int mqueue_flush_file(struct file *filp, fl_owner_t id)
+static int mqueue_flush_file(struct file *filp, void *id)
 {
 	struct mqueue_inode_info *info = MQUEUE_I(file_inode(filp));