[PATCH] filelock: move file locking definitions to separate header file

Jeff Layton
2022-11-20T21:00:23Z

The file locking definitions have lived in fs.h since the dawn of time,
but they are only used by a small subset of the source files that
include it.

Move the file locking definitions to a new header file, and add the
appropriate #include directives to the source files that need them. By
doing this we trim down fs.h a bit and limit the amount of rebuilding
that has to be done when we make changes to the file locking APIs.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
fs/9p/vfs_file.c | 1 +
fs/afs/internal.h | 1 +
fs/attr.c | 1 +
fs/ceph/locks.c | 1 +
fs/cifs/cifsfs.c | 1 +
fs/cifs/cifsglob.h | 1 +
fs/cifs/cifssmb.c | 1 +
fs/cifs/file.c | 1 +
fs/cifs/smb2file.c | 1 +
fs/dlm/plock.c | 1 +
fs/fcntl.c | 1 +
fs/file_table.c | 1 +
fs/fuse/file.c | 1 +
fs/gfs2/file.c | 1 +
fs/inode.c | 1 +
fs/ksmbd/smb2pdu.c | 1 +
fs/ksmbd/vfs.c | 1 +
fs/ksmbd/vfs_cache.c | 1 +
fs/lockd/clntproc.c | 1 +
fs/lockd/netns.h | 1 +
fs/locks.c | 1 +
fs/namei.c | 1 +
fs/nfs/nfs4_fs.h | 1 +
fs/nfs_common/grace.c | 1 +
fs/nfsd/netns.h | 1 +
fs/ocfs2/locks.c | 1 +
fs/ocfs2/stack_user.c | 1 +
fs/open.c | 1 +
fs/orangefs/file.c | 1 +
fs/proc/fd.c | 1 +
fs/utimes.c | 1 +
fs/xattr.c | 1 +
fs/xfs/xfs_buf.h | 1 +
fs/xfs/xfs_file.c | 1 +
fs/xfs/xfs_inode.c | 1 +
include/linux/filelock.h | 428 ++++++++++++++++++++++++++++++++++++++
include/linux/fs.h | 421 -------------------------------------
include/linux/lockd/xdr.h | 1 +
38 files changed, 464 insertions(+), 421 deletions(-)
create mode 100644 include/linux/filelock.h

Unless anyone has objections, I'll plan to merge this in via the file
locking tree for v6.3. I'd appreciate Acked-bys or Reviewed-bys from
maintainers, however.

diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index aec43ba83799..5e3c4b5198a6 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -9,6 +9,7 @@
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/sched.h>
#include <linux/file.h>
#include <linux/stat.h>
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 723d162078a3..c41a82a08f8b 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -9,6 +9,7 @@
#include <linux/kernel.h>
#include <linux/ktime.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/pagemap.h>
#include <linux/rxrpc.h>
#include <linux/key.h>
diff --git a/fs/attr.c b/fs/attr.c
index 1552a5f23d6b..e643f17a5465 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -14,6 +14,7 @@
#include <linux/capability.h>
#include <linux/fsnotify.h>
#include <linux/fcntl.h>
+#include <linux/filelock.h>
#include <linux/security.h>
#include <linux/evm.h>
#include <linux/ima.h>
diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c
index f3b461c708a8..476f25bba263 100644
--- a/fs/ceph/locks.c
+++ b/fs/ceph/locks.c
@@ -7,6 +7,7 @@

#include "super.h"
#include "mds_client.h"
+#include <linux/filelock.h>
#include <linux/ceph/pagelist.h>

static u64 lock_secret;
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index fe220686bba4..8d255916b6bf 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -12,6 +12,7 @@

#include <linux/module.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/mount.h>
#include <linux/slab.h>
#include <linux/init.h>
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 1420acf987f0..1b9fee67a25e 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -25,6 +25,7 @@
#include <uapi/linux/cifs/cifs_mount.h>
#include "../smbfs_common/smb2pdu.h"
#include "smb2pdu.h"
+#include <linux/filelock.h>

#define SMB_PATH_MAX 260
#define CIFS_PORT 445
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 1724066c1536..0410658c00bd 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -15,6 +15,7 @@
/* want to reuse a stale file handle and only the caller knows the file info */

#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/kernel.h>
#include <linux/vfs.h>
#include <linux/slab.h>
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 6c1431979495..c230e86f1e09 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -9,6 +9,7 @@
*
*/
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/backing-dev.h>
#include <linux/stat.h>
#include <linux/fcntl.h>
diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
index ffbd9a99fc12..1f421bfbe797 100644
--- a/fs/cifs/smb2file.c
+++ b/fs/cifs/smb2file.c
@@ -7,6 +7,7 @@
*
*/
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/stat.h>
#include <linux/slab.h>
#include <linux/pagemap.h>
diff --git a/fs/dlm/plock.c b/fs/dlm/plock.c
index 737f185aad8d..ed4357e62f35 100644
--- a/fs/dlm/plock.c
+++ b/fs/dlm/plock.c
@@ -4,6 +4,7 @@
*/

#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/miscdevice.h>
#include <linux/poll.h>
#include <linux/dlm.h>
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 146c9ab0cd4b..7852e946fdf4 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -10,6 +10,7 @@
#include <linux/mm.h>
#include <linux/sched/task.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/file.h>
#include <linux/fdtable.h>
#include <linux/capability.h>
diff --git a/fs/file_table.c b/fs/file_table.c
index dd88701e54a9..372653b92617 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -13,6 +13,7 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/security.h>
#include <linux/cred.h>
#include <linux/eventpoll.h>
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 71bfb663aac5..0e6b3b8e2f27 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -18,6 +18,7 @@
#include <linux/falloc.h>
#include <linux/uio.h>
#include <linux/fs.h>
+#include <linux/filelock.h>

static int fuse_send_open(struct fuse_mount *fm, u64 nodeid,
unsigned int open_flags, int opcode,
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 60c6fb91fb58..2a48c8df6d56 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -15,6 +15,7 @@
#include <linux/mm.h>
#include <linux/mount.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/gfs2_ondisk.h>
#include <linux/falloc.h>
#include <linux/swap.h>
diff --git a/fs/inode.c b/fs/inode.c
index b608528efd3a..f32aa2ec148d 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -5,6 +5,7 @@
*/
#include <linux/export.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/mm.h>
#include <linux/backing-dev.h>
#include <linux/hash.h>
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
index f2bcd2a5fb7f..d4d6f24790d6 100644
--- a/fs/ksmbd/smb2pdu.c
+++ b/fs/ksmbd/smb2pdu.c
@@ -12,6 +12,7 @@
#include <linux/ethtool.h>
#include <linux/falloc.h>
#include <linux/mount.h>
+#include <linux/filelock.h>

#include "glob.h"
#include "smbfsctl.h"
diff --git a/fs/ksmbd/vfs.c b/fs/ksmbd/vfs.c
index f9e85d6a160e..f73c4e119ffd 100644
--- a/fs/ksmbd/vfs.c
+++ b/fs/ksmbd/vfs.c
@@ -6,6 +6,7 @@

#include <linux/kernel.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/uaccess.h>
#include <linux/backing-dev.h>
#include <linux/writeback.h>
diff --git a/fs/ksmbd/vfs_cache.c b/fs/ksmbd/vfs_cache.c
index da9163b00350..552c3882a8f4 100644
--- a/fs/ksmbd/vfs_cache.c
+++ b/fs/ksmbd/vfs_cache.c
@@ -5,6 +5,7 @@
*/

#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>

diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index 99fffc9cb958..e875a3571c41 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -12,6 +12,7 @@
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/nfs_fs.h>
#include <linux/utsname.h>
#include <linux/freezer.h>
diff --git a/fs/lockd/netns.h b/fs/lockd/netns.h
index 5bec78c8e431..17432c445fe6 100644
--- a/fs/lockd/netns.h
+++ b/fs/lockd/netns.h
@@ -3,6 +3,7 @@
#define __LOCKD_NETNS_H__

#include <linux/fs.h>
+#include <linux/filelock.h>
#include <net/netns/generic.h>

struct lockd_net {
diff --git a/fs/locks.c b/fs/locks.c
index 8f01bee17715..a5cc90c958c9 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -52,6 +52,7 @@
#include <linux/capability.h>
#include <linux/file.h>
#include <linux/fdtable.h>
+#include <linux/filelock.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/security.h>
diff --git a/fs/namei.c b/fs/namei.c
index 578c2110df02..d5121f51f900 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -20,6 +20,7 @@
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/namei.h>
#include <linux/pagemap.h>
#include <linux/sched/mm.h>
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index cfef738d765e..9822ad1aabef 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -23,6 +23,7 @@
#define NFS4_MAX_LOOP_ON_RECOVER (10)

#include <linux/seqlock.h>
+#include <linux/filelock.h>

struct idmap;

diff --git a/fs/nfs_common/grace.c b/fs/nfs_common/grace.c
index 0a9b72685f98..1479583fbb62 100644
--- a/fs/nfs_common/grace.c
+++ b/fs/nfs_common/grace.c
@@ -9,6 +9,7 @@
#include <net/net_namespace.h>
#include <net/netns/generic.h>
#include <linux/fs.h>
+#include <linux/filelock.h>

static unsigned int grace_net_id;
static DEFINE_SPINLOCK(grace_lock);
diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h
index 8c854ba3285b..bc139401927d 100644
--- a/fs/nfsd/netns.h
+++ b/fs/nfsd/netns.h
@@ -10,6 +10,7 @@

#include <net/net_namespace.h>
#include <net/netns/generic.h>
+#include <linux/filelock.h>
#include <linux/percpu_counter.h>
#include <linux/siphash.h>

diff --git a/fs/ocfs2/locks.c b/fs/ocfs2/locks.c
index 73a3854b2afb..f37174e79fad 100644
--- a/fs/ocfs2/locks.c
+++ b/fs/ocfs2/locks.c
@@ -8,6 +8,7 @@
*/

#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/fcntl.h>

#include <cluster/masklog.h>
diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
index 64e6ddcfe329..05d4414d0c33 100644
--- a/fs/ocfs2/stack_user.c
+++ b/fs/ocfs2/stack_user.c
@@ -9,6 +9,7 @@

#include <linux/module.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/miscdevice.h>
#include <linux/mutex.h>
#include <linux/slab.h>
diff --git a/fs/open.c b/fs/open.c
index a81319b6177f..11a3202ea60c 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -33,6 +33,7 @@
#include <linux/dnotify.h>
#include <linux/compat.h>
#include <linux/mnt_idmapping.h>
+#include <linux/filelock.h>

#include "internal.h"

diff --git a/fs/orangefs/file.c b/fs/orangefs/file.c
index 732661aa2680..12ec31a9113b 100644
--- a/fs/orangefs/file.c
+++ b/fs/orangefs/file.c
@@ -14,6 +14,7 @@
#include "orangefs-kernel.h"
#include "orangefs-bufmap.h"
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/pagemap.h>

static int flush_racache(struct inode *inode)
diff --git a/fs/proc/fd.c b/fs/proc/fd.c
index 913bef0d2a36..2a1e7725dbcb 100644
--- a/fs/proc/fd.c
+++ b/fs/proc/fd.c
@@ -11,6 +11,7 @@
#include <linux/file.h>
#include <linux/seq_file.h>
#include <linux/fs.h>
+#include <linux/filelock.h>

#include <linux/proc_fs.h>

diff --git a/fs/utimes.c b/fs/utimes.c
index 39f356017635..00499e4ba955 100644
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -7,6 +7,7 @@
#include <linux/uaccess.h>
#include <linux/compat.h>
#include <asm/unistd.h>
+#include <linux/filelock.h>

static bool nsec_valid(long nsec)
{
diff --git a/fs/xattr.c b/fs/xattr.c
index 61107b6bbed2..b81fd7d8520e 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -9,6 +9,7 @@
Copyright (c) 2004 Red Hat, Inc., James Morris <jmorris@redhat.com>
*/
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/slab.h>
#include <linux/file.h>
#include <linux/xattr.h>
diff --git a/fs/xfs/xfs_buf.h b/fs/xfs/xfs_buf.h
index 549c60942208..c1f283cc22f6 100644
--- a/fs/xfs/xfs_buf.h
+++ b/fs/xfs/xfs_buf.h
@@ -11,6 +11,7 @@
#include <linux/spinlock.h>
#include <linux/mm.h>
#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/dax.h>
#include <linux/uio.h>
#include <linux/list_lru.h>
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index e462d39c840e..591c696651f0 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -31,6 +31,7 @@
#include <linux/mman.h>
#include <linux/fadvise.h>
#include <linux/mount.h>
+#include <linux/filelock.h>

static const struct vm_operations_struct xfs_file_vm_ops;

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index aa303be11576..257e279df469 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -4,6 +4,7 @@
* All Rights Reserved.
*/
#include <linux/iversion.h>
+#include <linux/filelock.h>

#include "xfs.h"
#include "xfs_fs.h"
diff --git a/include/linux/filelock.h b/include/linux/filelock.h
new file mode 100644
index 000000000000..b686e7e74787
--- /dev/null
+++ b/include/linux/filelock.h
@@ -0,0 +1,428 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_FILELOCK_H
+#define _LINUX_FILELOCK_H
+
+#include <linux/list.h>
+#include <linux/nfs_fs_i.h>
+
+#define FL_POSIX 1
+#define FL_FLOCK 2
+#define FL_DELEG 4 /* NFSv4 delegation */
+#define FL_ACCESS 8 /* not trying to lock, just looking */
+#define FL_EXISTS 16 /* when unlocking, test for existence */
+#define FL_LEASE 32 /* lease held on this file */
+#define FL_CLOSE 64 /* unlock on close */
+#define FL_SLEEP 128 /* A blocking lock */
+#define FL_DOWNGRADE_PENDING 256 /* Lease is being downgraded */
+#define FL_UNLOCK_PENDING 512 /* Lease is being broken */
+#define FL_OFDLCK 1024 /* lock is "owned" by struct file */
+#define FL_LAYOUT 2048 /* outstanding pNFS layout */
+#define FL_RECLAIM 4096 /* reclaiming from a reboot server */
+
+#define FL_CLOSE_POSIX (FL_POSIX | FL_CLOSE)
+
+/*
+ * Special return value from posix_lock_file() and vfs_lock_file() for
+ * asynchronous locking.
+ */
+#define FILE_LOCK_DEFERRED 1
+
+struct file_lock;
+
+struct file_lock_operations {
+ void (*fl_copy_lock)(struct file_lock *, struct file_lock *);
+ void (*fl_release_private)(struct file_lock *);
+};
+
+struct lock_manager_operations {
+ void *lm_mod_owner;
+ fl_owner_t (*lm_get_owner)(fl_owner_t);
+ void (*lm_put_owner)(fl_owner_t);
+ void (*lm_notify)(struct file_lock *); /* unblock callback */
+ int (*lm_grant)(struct file_lock *, int);
+ bool (*lm_break)(struct file_lock *);
+ int (*lm_change)(struct file_lock *, int, struct list_head *);
+ void (*lm_setup)(struct file_lock *, void **);
+ bool (*lm_breaker_owns_lease)(struct file_lock *);
+ bool (*lm_lock_expirable)(struct file_lock *cfl);
+ void (*lm_expire_lock)(void);
+};
+
+struct lock_manager {
+ struct list_head list;
+ /*
+ * NFSv4 and up also want opens blocked during the grace period;
+ * NLM doesn't care:
+ */
+ bool block_opens;
+};
+
+struct net;
+void locks_start_grace(struct net *, struct lock_manager *);
+void locks_end_grace(struct lock_manager *);
+bool locks_in_grace(struct net *);
+bool opens_in_grace(struct net *);
+
+
+/*
+ * struct file_lock represents a generic "file lock". It's used to represent
+ * POSIX byte range locks, BSD (flock) locks, and leases. It's important to
+ * note that the same struct is used to represent both a request for a lock and
+ * the lock itself, but the same object is never used for both.
+ *
+ * FIXME: should we create a separate "struct lock_request" to help distinguish
+ * these two uses?
+ *
+ * The varous i_flctx lists are ordered by:
+ *
+ * 1) lock owner
+ * 2) lock range start
+ * 3) lock range end
+ *
+ * Obviously, the last two criteria only matter for POSIX locks.
+ */
+struct file_lock {
+ struct file_lock *fl_blocker; /* The lock, that is blocking us */
+ struct list_head fl_list; /* link into file_lock_context */
+ struct hlist_node fl_link; /* node in global lists */
+ struct list_head fl_blocked_requests; /* list of requests with
+ * ->fl_blocker pointing here
+ */
+ struct list_head fl_blocked_member; /* node in
+ * ->fl_blocker->fl_blocked_requests
+ */
+ fl_owner_t fl_owner;
+ unsigned int fl_flags;
+ unsigned char fl_type;
+ unsigned int fl_pid;
+ int fl_link_cpu; /* what cpu's list is this on? */
+ wait_queue_head_t fl_wait;
+ struct file *fl_file;
+ loff_t fl_start;
+ loff_t fl_end;
+
+ struct fasync_struct * fl_fasync; /* for lease break notifications */
+ /* for lease breaks: */
+ unsigned long fl_break_time;
+ unsigned long fl_downgrade_time;
+
+ const struct file_lock_operations *fl_ops; /* Callbacks for filesystems */
+ const struct lock_manager_operations *fl_lmops; /* Callbacks for lockmanagers */
+ union {
+ struct nfs_lock_info nfs_fl;
+ struct nfs4_lock_info nfs4_fl;
+ struct {
+ struct list_head link; /* link in AFS vnode's pending_locks list */
+ int state; /* state of grant or error if -ve */
+ unsigned int debug_id;
+ } afs;
+ } fl_u;
+} __randomize_layout;
+
+struct file_lock_context {
+ spinlock_t flc_lock;
+ struct list_head flc_flock;
+ struct list_head flc_posix;
+ struct list_head flc_lease;
+};
+
+#define locks_inode(f) file_inode(f)
+
+#ifdef CONFIG_FILE_LOCKING
+extern int fcntl_getlk(struct file *, unsigned int, struct flock *);
+extern int fcntl_setlk(unsigned int, struct file *, unsigned int,
+ struct flock *);
+
+#if BITS_PER_LONG == 32
+extern int fcntl_getlk64(struct file *, unsigned int, struct flock64 *);
+extern int fcntl_setlk64(unsigned int, struct file *, unsigned int,
+ struct flock64 *);
+#endif
+
+extern int fcntl_setlease(unsigned int fd, struct file *filp, long arg);
+extern int fcntl_getlease(struct file *filp);
+
+/* fs/locks.c */
+void locks_free_lock_context(struct inode *inode);
+void locks_free_lock(struct file_lock *fl);
+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_file(struct file *);
+extern void locks_release_private(struct file_lock *);
+extern void posix_test_lock(struct file *, struct file_lock *);
+extern int posix_lock_file(struct file *, struct file_lock *, struct file_lock *);
+extern int locks_delete_block(struct file_lock *);
+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);
+bool vfs_inode_has_locks(struct inode *inode);
+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 timespec64 *time);
+extern int generic_setlease(struct file *, long, struct file_lock **, void **priv);
+extern int vfs_setlease(struct file *, long, struct file_lock **, void **);
+extern int lease_modify(struct file_lock *, int, struct list_head *);
+
+struct notifier_block;
+extern int lease_register_notifier(struct notifier_block *);
+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);
+extern bool locks_owner_has_blockers(struct file_lock_context *flctx,
+ fl_owner_t owner);
+
+static inline struct file_lock_context *
+locks_inode_context(const struct inode *inode)
+{
+ return smp_load_acquire(&inode->i_flctx);
+}
+
+#else /* !CONFIG_FILE_LOCKING */
+static inline int fcntl_getlk(struct file *file, unsigned int cmd,
+ struct flock __user *user)
+{
+ return -EINVAL;
+}
+
+static inline int fcntl_setlk(unsigned int fd, struct file *file,
+ unsigned int cmd, struct flock __user *user)
+{
+ return -EACCES;
+}
+
+#if BITS_PER_LONG == 32
+static inline int fcntl_getlk64(struct file *file, unsigned int cmd,
+ struct flock64 *user)
+{
+ return -EINVAL;
+}
+
+static inline int fcntl_setlk64(unsigned int fd, struct file *file,
+ unsigned int cmd, struct flock64 *user)
+{
+ return -EACCES;
+}
+#endif
+static inline int fcntl_setlease(unsigned int fd, struct file *filp, long arg)
+{
+ return -EINVAL;
+}
+
+static inline int fcntl_getlease(struct file *filp)
+{
+ return F_UNLCK;
+}
+
+static inline void
+locks_free_lock_context(struct inode *inode)
+{
+}
+
+static inline void locks_init_lock(struct file_lock *fl)
+{
+ return;
+}
+
+static inline void locks_copy_conflock(struct file_lock *new, struct file_lock *fl)
+{
+ return;
+}
+
+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)
+{
+ return;
+}
+
+static inline void locks_remove_file(struct file *filp)
+{
+ return;
+}
+
+static inline void posix_test_lock(struct file *filp, struct file_lock *fl)
+{
+ return;
+}
+
+static inline int posix_lock_file(struct file *filp, struct file_lock *fl,
+ struct file_lock *conflock)
+{
+ return -ENOLCK;
+}
+
+static inline int locks_delete_block(struct file_lock *waiter)
+{
+ return -ENOENT;
+}
+
+static inline int vfs_test_lock(struct file *filp, struct file_lock *fl)
+{
+ return 0;
+}
+
+static inline int vfs_lock_file(struct file *filp, unsigned int cmd,
+ struct file_lock *fl, struct file_lock *conf)
+{
+ return -ENOLCK;
+}
+
+static inline int vfs_cancel_lock(struct file *filp, struct file_lock *fl)
+{
+ return 0;
+}
+
+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;
+}
+
+static inline void lease_get_mtime(struct inode *inode,
+ struct timespec64 *time)
+{
+ return;
+}
+
+static inline int generic_setlease(struct file *filp, long arg,
+ struct file_lock **flp, void **priv)
+{
+ return -EINVAL;
+}
+
+static inline int vfs_setlease(struct file *filp, long arg,
+ struct file_lock **lease, void **priv)
+{
+ return -EINVAL;
+}
+
+static inline int lease_modify(struct file_lock *fl, int arg,
+ struct list_head *dispose)
+{
+ return -EINVAL;
+}
+
+struct files_struct;
+static inline void show_fd_locks(struct seq_file *f,
+ struct file *filp, struct files_struct *files) {}
+static inline bool locks_owner_has_blockers(struct file_lock_context *flctx,
+ fl_owner_t owner)
+{
+ return false;
+}
+
+static inline struct file_lock_context *
+locks_inode_context(const struct inode *inode)
+{
+ return NULL;
+}
+#endif /* !CONFIG_FILE_LOCKING */
+
+static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl)
+{
+ return locks_lock_inode_wait(locks_inode(filp), fl);
+}
+
+#ifdef CONFIG_FILE_LOCKING
+static inline int break_lease(struct inode *inode, unsigned int mode)
+{
+ /*
+ * Since this check is lockless, we must ensure that any refcounts
+ * taken are done before checking i_flctx->flc_lease. Otherwise, we
+ * could end up racing with tasks trying to set a new lease on this
+ * file.
+ */
+ smp_mb();
+ if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
+ return __break_lease(inode, mode, FL_LEASE);
+ return 0;
+}
+
+static inline int break_deleg(struct inode *inode, unsigned int mode)
+{
+ /*
+ * Since this check is lockless, we must ensure that any refcounts
+ * taken are done before checking i_flctx->flc_lease. Otherwise, we
+ * could end up racing with tasks trying to set a new lease on this
+ * file.
+ */
+ smp_mb();
+ if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
+ return __break_lease(inode, mode, FL_DELEG);
+ return 0;
+}
+
+static inline int try_break_deleg(struct inode *inode, struct inode **delegated_inode)
+{
+ int ret;
+
+ ret = break_deleg(inode, O_WRONLY|O_NONBLOCK);
+ if (ret == -EWOULDBLOCK && delegated_inode) {
+ *delegated_inode = inode;
+ ihold(inode);
+ }
+ return ret;
+}
+
+static inline int break_deleg_wait(struct inode **delegated_inode)
+{
+ int ret;
+
+ ret = break_deleg(*delegated_inode, O_WRONLY);
+ iput(*delegated_inode);
+ *delegated_inode = NULL;
+ return ret;
+}
+
+static inline int break_layout(struct inode *inode, bool wait)
+{
+ smp_mb();
+ if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
+ return __break_lease(inode,
+ wait ? O_WRONLY : O_WRONLY | O_NONBLOCK,
+ FL_LAYOUT);
+ return 0;
+}
+
+#else /* !CONFIG_FILE_LOCKING */
+static inline int break_lease(struct inode *inode, unsigned int mode)
+{
+ return 0;
+}
+
+static inline int break_deleg(struct inode *inode, unsigned int mode)
+{
+ return 0;
+}
+
+static inline int try_break_deleg(struct inode *inode, struct inode **delegated_inode)
+{
+ return 0;
+}
+
+static inline int break_deleg_wait(struct inode **delegated_inode)
+{
+ BUG();
+ return 0;
+}
+
+static inline int break_layout(struct inode *inode, bool wait)
+{
+ return 0;
+}
+
+#endif /* CONFIG_FILE_LOCKING */
+
+#endif /* _LINUX_FILELOCK_H */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 092673178e13..63f355058ab5 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1003,132 +1003,11 @@ static inline struct file *get_file(struct file *f)
#define MAX_LFS_FILESIZE ((loff_t)LLONG_MAX)
#endif

-#define FL_POSIX 1
-#define FL_FLOCK 2
-#define FL_DELEG 4 /* NFSv4 delegation */
-#define FL_ACCESS 8 /* not trying to lock, just looking */
-#define FL_EXISTS 16 /* when unlocking, test for existence */
-#define FL_LEASE 32 /* lease held on this file */
-#define FL_CLOSE 64 /* unlock on close */
-#define FL_SLEEP 128 /* A blocking lock */
-#define FL_DOWNGRADE_PENDING 256 /* Lease is being downgraded */
-#define FL_UNLOCK_PENDING 512 /* Lease is being broken */
-#define FL_OFDLCK 1024 /* lock is "owned" by struct file */
-#define FL_LAYOUT 2048 /* outstanding pNFS layout */
-#define FL_RECLAIM 4096 /* reclaiming from a reboot server */
-
-#define FL_CLOSE_POSIX (FL_POSIX | FL_CLOSE)
-
-/*
- * Special return value from posix_lock_file() and vfs_lock_file() for
- * asynchronous locking.
- */
-#define FILE_LOCK_DEFERRED 1
-
/* legacy typedef, should eventually be removed */
typedef void *fl_owner_t;

struct file_lock;

-struct file_lock_operations {
- void (*fl_copy_lock)(struct file_lock *, struct file_lock *);
- void (*fl_release_private)(struct file_lock *);
-};
-
-struct lock_manager_operations {
- void *lm_mod_owner;
- fl_owner_t (*lm_get_owner)(fl_owner_t);
- void (*lm_put_owner)(fl_owner_t);
- void (*lm_notify)(struct file_lock *); /* unblock callback */
- int (*lm_grant)(struct file_lock *, int);
- bool (*lm_break)(struct file_lock *);
- int (*lm_change)(struct file_lock *, int, struct list_head *);
- void (*lm_setup)(struct file_lock *, void **);
- bool (*lm_breaker_owns_lease)(struct file_lock *);
- bool (*lm_lock_expirable)(struct file_lock *cfl);
- void (*lm_expire_lock)(void);
-};
-
-struct lock_manager {
- struct list_head list;
- /*
- * NFSv4 and up also want opens blocked during the grace period;
- * NLM doesn't care:
- */
- bool block_opens;
-};
-
-struct net;
-void locks_start_grace(struct net *, struct lock_manager *);
-void locks_end_grace(struct lock_manager *);
-bool locks_in_grace(struct net *);
-bool opens_in_grace(struct net *);
-
-/* that will die - we need it for nfs_lock_info */
-#include <linux/nfs_fs_i.h>
-
-/*
- * struct file_lock represents a generic "file lock". It's used to represent
- * POSIX byte range locks, BSD (flock) locks, and leases. It's important to
- * note that the same struct is used to represent both a request for a lock and
- * the lock itself, but the same object is never used for both.
- *
- * FIXME: should we create a separate "struct lock_request" to help distinguish
- * these two uses?
- *
- * The varous i_flctx lists are ordered by:
- *
- * 1) lock owner
- * 2) lock range start
- * 3) lock range end
- *
- * Obviously, the last two criteria only matter for POSIX locks.
- */
-struct file_lock {
- struct file_lock *fl_blocker; /* The lock, that is blocking us */
- struct list_head fl_list; /* link into file_lock_context */
- struct hlist_node fl_link; /* node in global lists */
- struct list_head fl_blocked_requests; /* list of requests with
- * ->fl_blocker pointing here
- */
- struct list_head fl_blocked_member; /* node in
- * ->fl_blocker->fl_blocked_requests
- */
- fl_owner_t fl_owner;
- unsigned int fl_flags;
- unsigned char fl_type;
- unsigned int fl_pid;
- int fl_link_cpu; /* what cpu's list is this on? */
- wait_queue_head_t fl_wait;
- struct file *fl_file;
- loff_t fl_start;
- loff_t fl_end;
-
- struct fasync_struct * fl_fasync; /* for lease break notifications */
- /* for lease breaks: */
- unsigned long fl_break_time;
- unsigned long fl_downgrade_time;
-
- const struct file_lock_operations *fl_ops; /* Callbacks for filesystems */
- const struct lock_manager_operations *fl_lmops; /* Callbacks for lockmanagers */
- union {
- struct nfs_lock_info nfs_fl;
- struct nfs4_lock_info nfs4_fl;
- struct {
- struct list_head link; /* link in AFS vnode's pending_locks list */
- int state; /* state of grant or error if -ve */
- unsigned int debug_id;
- } afs;
- } fl_u;
-} __randomize_layout;
-
-struct file_lock_context {
- spinlock_t flc_lock;
- struct list_head flc_flock;
- struct list_head flc_posix;
- struct list_head flc_lease;
-};
-
/* The following constant reflects the upper bound of the file/locking space */
#ifndef OFFSET_MAX
#define INT_LIMIT(x) (~((x)1 << (sizeof(x)*8 - 1)))
@@ -1138,211 +1017,6 @@ struct file_lock_context {

extern void send_sigio(struct fown_struct *fown, int fd, int band);

-#define locks_inode(f) file_inode(f)
-
-#ifdef CONFIG_FILE_LOCKING
-extern int fcntl_getlk(struct file *, unsigned int, struct flock *);
-extern int fcntl_setlk(unsigned int, struct file *, unsigned int,
- struct flock *);
-
-#if BITS_PER_LONG == 32
-extern int fcntl_getlk64(struct file *, unsigned int, struct flock64 *);
-extern int fcntl_setlk64(unsigned int, struct file *, unsigned int,
- struct flock64 *);
-#endif
-
-extern int fcntl_setlease(unsigned int fd, struct file *filp, long arg);
-extern int fcntl_getlease(struct file *filp);
-
-/* fs/locks.c */
-void locks_free_lock_context(struct inode *inode);
-void locks_free_lock(struct file_lock *fl);
-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_file(struct file *);
-extern void locks_release_private(struct file_lock *);
-extern void posix_test_lock(struct file *, struct file_lock *);
-extern int posix_lock_file(struct file *, struct file_lock *, struct file_lock *);
-extern int locks_delete_block(struct file_lock *);
-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);
-bool vfs_inode_has_locks(struct inode *inode);
-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 timespec64 *time);
-extern int generic_setlease(struct file *, long, struct file_lock **, void **priv);
-extern int vfs_setlease(struct file *, long, struct file_lock **, void **);
-extern int lease_modify(struct file_lock *, int, struct list_head *);
-
-struct notifier_block;
-extern int lease_register_notifier(struct notifier_block *);
-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);
-extern bool locks_owner_has_blockers(struct file_lock_context *flctx,
- fl_owner_t owner);
-
-static inline struct file_lock_context *
-locks_inode_context(const struct inode *inode)
-{
- return smp_load_acquire(&inode->i_flctx);
-}
-
-#else /* !CONFIG_FILE_LOCKING */
-static inline int fcntl_getlk(struct file *file, unsigned int cmd,
- struct flock __user *user)
-{
- return -EINVAL;
-}
-
-static inline int fcntl_setlk(unsigned int fd, struct file *file,
- unsigned int cmd, struct flock __user *user)
-{
- return -EACCES;
-}
-
-#if BITS_PER_LONG == 32
-static inline int fcntl_getlk64(struct file *file, unsigned int cmd,
- struct flock64 *user)
-{
- return -EINVAL;
-}
-
-static inline int fcntl_setlk64(unsigned int fd, struct file *file,
- unsigned int cmd, struct flock64 *user)
-{
- return -EACCES;
-}
-#endif
-static inline int fcntl_setlease(unsigned int fd, struct file *filp, long arg)
-{
- return -EINVAL;
-}
-
-static inline int fcntl_getlease(struct file *filp)
-{
- return F_UNLCK;
-}
-
-static inline void
-locks_free_lock_context(struct inode *inode)
-{
-}
-
-static inline void locks_init_lock(struct file_lock *fl)
-{
- return;
-}
-
-static inline void locks_copy_conflock(struct file_lock *new, struct file_lock *fl)
-{
- return;
-}
-
-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)
-{
- return;
-}
-
-static inline void locks_remove_file(struct file *filp)
-{
- return;
-}
-
-static inline void posix_test_lock(struct file *filp, struct file_lock *fl)
-{
- return;
-}
-
-static inline int posix_lock_file(struct file *filp, struct file_lock *fl,
- struct file_lock *conflock)
-{
- return -ENOLCK;
-}
-
-static inline int locks_delete_block(struct file_lock *waiter)
-{
- return -ENOENT;
-}
-
-static inline int vfs_test_lock(struct file *filp, struct file_lock *fl)
-{
- return 0;
-}
-
-static inline int vfs_lock_file(struct file *filp, unsigned int cmd,
- struct file_lock *fl, struct file_lock *conf)
-{
- return -ENOLCK;
-}
-
-static inline int vfs_cancel_lock(struct file *filp, struct file_lock *fl)
-{
- return 0;
-}
-
-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;
-}
-
-static inline void lease_get_mtime(struct inode *inode,
- struct timespec64 *time)
-{
- return;
-}
-
-static inline int generic_setlease(struct file *filp, long arg,
- struct file_lock **flp, void **priv)
-{
- return -EINVAL;
-}
-
-static inline int vfs_setlease(struct file *filp, long arg,
- struct file_lock **lease, void **priv)
-{
- return -EINVAL;
-}
-
-static inline int lease_modify(struct file_lock *fl, int arg,
- struct list_head *dispose)
-{
- return -EINVAL;
-}
-
-struct files_struct;
-static inline void show_fd_locks(struct seq_file *f,
- struct file *filp, struct files_struct *files) {}
-static inline bool locks_owner_has_blockers(struct file_lock_context *flctx,
- fl_owner_t owner)
-{
- return false;
-}
-
-static inline struct file_lock_context *
-locks_inode_context(const struct inode *inode)
-{
- return NULL;
-}
-
-#endif /* !CONFIG_FILE_LOCKING */
-
static inline struct inode *file_inode(const struct file *f)
{
return f->f_inode;
@@ -1353,11 +1027,6 @@ static inline struct dentry *file_dentry(const struct file *file)
return d_real(file->f_path.dentry, file_inode(file));
}

-static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl)
-{
- return locks_lock_inode_wait(locks_inode(filp), fl);
-}
-
struct fasync_struct {
rwlock_t fa_lock;
int magic;
@@ -2641,96 +2310,6 @@ extern struct kobject *fs_kobj;

#define MAX_RW_COUNT (INT_MAX & PAGE_MASK)

-#ifdef CONFIG_FILE_LOCKING
-static inline int break_lease(struct inode *inode, unsigned int mode)
-{
- /*
- * Since this check is lockless, we must ensure that any refcounts
- * taken are done before checking i_flctx->flc_lease. Otherwise, we
- * could end up racing with tasks trying to set a new lease on this
- * file.
- */
- smp_mb();
- if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
- return __break_lease(inode, mode, FL_LEASE);
- return 0;
-}
-
-static inline int break_deleg(struct inode *inode, unsigned int mode)
-{
- /*
- * Since this check is lockless, we must ensure that any refcounts
- * taken are done before checking i_flctx->flc_lease. Otherwise, we
- * could end up racing with tasks trying to set a new lease on this
- * file.
- */
- smp_mb();
- if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
- return __break_lease(inode, mode, FL_DELEG);
- return 0;
-}
-
-static inline int try_break_deleg(struct inode *inode, struct inode **delegated_inode)
-{
- int ret;
-
- ret = break_deleg(inode, O_WRONLY|O_NONBLOCK);
- if (ret == -EWOULDBLOCK && delegated_inode) {
- *delegated_inode = inode;
- ihold(inode);
- }
- return ret;
-}
-
-static inline int break_deleg_wait(struct inode **delegated_inode)
-{
- int ret;
-
- ret = break_deleg(*delegated_inode, O_WRONLY);
- iput(*delegated_inode);
- *delegated_inode = NULL;
- return ret;
-}
-
-static inline int break_layout(struct inode *inode, bool wait)
-{
- smp_mb();
- if (inode->i_flctx && !list_empty_careful(&inode->i_flctx->flc_lease))
- return __break_lease(inode,
- wait ? O_WRONLY : O_WRONLY | O_NONBLOCK,
- FL_LAYOUT);
- return 0;
-}
-
-#else /* !CONFIG_FILE_LOCKING */
-static inline int break_lease(struct inode *inode, unsigned int mode)
-{
- return 0;
-}
-
-static inline int break_deleg(struct inode *inode, unsigned int mode)
-{
- return 0;
-}
-
-static inline int try_break_deleg(struct inode *inode, struct inode **delegated_inode)
-{
- return 0;
-}
-
-static inline int break_deleg_wait(struct inode **delegated_inode)
-{
- BUG();
- return 0;
-}
-
-static inline int break_layout(struct inode *inode, bool wait)
-{
- return 0;
-}
-
-#endif /* CONFIG_FILE_LOCKING */
-
/* fs/open.c */
struct audit_names;
struct filename {
diff --git a/include/linux/lockd/xdr.h b/include/linux/lockd/xdr.h
index 67e4a2c5500b..b60fbcd8cdfa 100644
--- a/include/linux/lockd/xdr.h
+++ b/include/linux/lockd/xdr.h
@@ -11,6 +11,7 @@
#define LOCKD_XDR_H

#include <linux/fs.h>
+#include <linux/filelock.h>
#include <linux/nfs.h>
#include <linux/sunrpc/xdr.h>

--
2.38.1