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authorLinus Torvalds2024-03-11 10:37:45 -0700
committerLinus Torvalds2024-03-11 10:37:45 -0700
commit0c750012e8f30d26930ae13e815635258aee92b3 (patch)
tree378036ac0561aeb5655f7517f66942ce56ee5c1f /include
parentb5683a37c881e2e08065f1670086e281430ee19f (diff)
parent14786d949a3b8cf00cc32456363b7db22894a0e6 (diff)
Merge tag 'vfs-6.9.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull file locking updates from Christian Brauner: "A few years ago struct file_lock_context was added to allow for separate lists to track different types of file locks instead of using a singly-linked list for all of them. Now leases no longer need to be tracked using struct file_lock. However, a lot of the infrastructure is identical for leases and locks so separating them isn't trivial. This splits a group of fields used by both file locks and leases into a new struct file_lock_core. The new core struct is embedded in struct file_lock. Coccinelle was used to convert a lot of the callers to deal with the move, with the remaining 25% or so converted by hand. Afterwards several internal functions in fs/locks.c are made to work with struct file_lock_core. Ultimately this allows to split struct file_lock into struct file_lock and struct file_lease. The file lease APIs are then converted to take struct file_lease" * tag 'vfs-6.9.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (51 commits) filelock: fix deadlock detection in POSIX locking filelock: always define for_each_file_lock() smb: remove redundant check filelock: don't do security checks on nfsd setlease calls filelock: split leases out of struct file_lock filelock: remove temporary compatibility macros smb/server: adapt to breakup of struct file_lock smb/client: adapt to breakup of struct file_lock ocfs2: adapt to breakup of struct file_lock nfsd: adapt to breakup of struct file_lock nfs: adapt to breakup of struct file_lock lockd: adapt to breakup of struct file_lock fuse: adapt to breakup of struct file_lock gfs2: adapt to breakup of struct file_lock dlm: adapt to breakup of struct file_lock ceph: adapt to breakup of struct file_lock afs: adapt to breakup of struct file_lock 9p: adapt to breakup of struct file_lock filelock: convert seqfile handling to use file_lock_core filelock: convert locks_translate_pid to take file_lock_core ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/filelock.h129
-rw-r--r--include/linux/fs.h5
-rw-r--r--include/linux/lockd/lockd.h8
-rw-r--r--include/linux/lockd/xdr.h2
-rw-r--r--include/trace/events/afs.h4
-rw-r--r--include/trace/events/filelock.h102
6 files changed, 161 insertions, 89 deletions
diff --git a/include/linux/filelock.h b/include/linux/filelock.h
index 95e868e09e29..daee999d05f3 100644
--- a/include/linux/filelock.h
+++ b/include/linux/filelock.h
@@ -27,6 +27,7 @@
#define FILE_LOCK_DEFERRED 1
struct file_lock;
+struct file_lease;
struct file_lock_operations {
void (*fl_copy_lock)(struct file_lock *, struct file_lock *);
@@ -39,14 +40,17 @@ struct lock_manager_operations {
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 lease_manager_operations {
+ bool (*lm_break)(struct file_lease *);
+ int (*lm_change)(struct file_lease *, int, struct list_head *);
+ void (*lm_setup)(struct file_lease *, void **);
+ bool (*lm_breaker_owns_lease)(struct file_lease *);
+};
+
struct lock_manager {
struct list_head list;
/*
@@ -85,31 +89,31 @@ bool opens_in_grace(struct net *);
*
* 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
+
+struct file_lock_core {
+ struct file_lock_core *flc_blocker; /* The lock that is blocking us */
+ struct list_head flc_list; /* link into file_lock_context */
+ struct hlist_node flc_link; /* node in global lists */
+ struct list_head flc_blocked_requests; /* list of requests with
* ->fl_blocker pointing here
*/
- struct list_head fl_blocked_member; /* node in
+ struct list_head flc_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;
+ fl_owner_t flc_owner;
+ unsigned int flc_flags;
+ unsigned char flc_type;
+ pid_t flc_pid;
+ int flc_link_cpu; /* what cpu's list is this on? */
+ wait_queue_head_t flc_wait;
+ struct file *flc_file;
+};
+
+struct file_lock {
+ struct file_lock_core c;
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 {
@@ -126,6 +130,15 @@ struct file_lock {
} fl_u;
} __randomize_layout;
+struct file_lease {
+ struct file_lock_core c;
+ struct fasync_struct * fl_fasync; /* for lease break notifications */
+ /* for lease breaks: */
+ unsigned long fl_break_time;
+ unsigned long fl_downgrade_time;
+ const struct lease_manager_operations *fl_lmops; /* Callbacks for lease managers */
+} __randomize_layout;
+
struct file_lock_context {
spinlock_t flc_lock;
struct list_head flc_flock;
@@ -147,11 +160,31 @@ int fcntl_setlk64(unsigned int, struct file *, unsigned int,
int fcntl_setlease(unsigned int fd, struct file *filp, int arg);
int fcntl_getlease(struct file *filp);
+static inline bool lock_is_unlock(struct file_lock *fl)
+{
+ return fl->c.flc_type == F_UNLCK;
+}
+
+static inline bool lock_is_read(struct file_lock *fl)
+{
+ return fl->c.flc_type == F_RDLCK;
+}
+
+static inline bool lock_is_write(struct file_lock *fl)
+{
+ return fl->c.flc_type == F_WRLCK;
+}
+
+static inline void locks_wake_up(struct file_lock *fl)
+{
+ wake_up(&fl->c.flc_wait);
+}
+
/* fs/locks.c */
void locks_free_lock_context(struct inode *inode);
void locks_free_lock(struct file_lock *fl);
void locks_init_lock(struct file_lock *);
-struct file_lock * locks_alloc_lock(void);
+struct file_lock *locks_alloc_lock(void);
void locks_copy_lock(struct file_lock *, struct file_lock *);
void locks_copy_conflock(struct file_lock *, struct file_lock *);
void locks_remove_posix(struct file *, fl_owner_t);
@@ -165,11 +198,16 @@ int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_l
int vfs_cancel_lock(struct file *filp, struct file_lock *fl);
bool vfs_inode_has_locks(struct inode *inode);
int locks_lock_inode_wait(struct inode *inode, struct file_lock *fl);
+
+void locks_init_lease(struct file_lease *);
+void locks_free_lease(struct file_lease *fl);
+struct file_lease *locks_alloc_lease(void);
int __break_lease(struct inode *inode, unsigned int flags, unsigned int type);
void lease_get_mtime(struct inode *, struct timespec64 *time);
-int generic_setlease(struct file *, int, struct file_lock **, void **priv);
-int vfs_setlease(struct file *, int, struct file_lock **, void **);
-int lease_modify(struct file_lock *, int, struct list_head *);
+int generic_setlease(struct file *, int, struct file_lease **, void **priv);
+int kernel_setlease(struct file *, int, struct file_lease **, void **);
+int vfs_setlease(struct file *, int, struct file_lease **, void **);
+int lease_modify(struct file_lease *, int, struct list_head *);
struct notifier_block;
int lease_register_notifier(struct notifier_block *);
@@ -223,6 +261,25 @@ static inline int fcntl_getlease(struct file *filp)
return F_UNLCK;
}
+static inline bool lock_is_unlock(struct file_lock *fl)
+{
+ return false;
+}
+
+static inline bool lock_is_read(struct file_lock *fl)
+{
+ return false;
+}
+
+static inline bool lock_is_write(struct file_lock *fl)
+{
+ return false;
+}
+
+static inline void locks_wake_up(struct file_lock *fl)
+{
+}
+
static inline void
locks_free_lock_context(struct inode *inode)
{
@@ -233,6 +290,11 @@ static inline void locks_init_lock(struct file_lock *fl)
return;
}
+static inline void locks_init_lease(struct file_lease *fl)
+{
+ return;
+}
+
static inline void locks_copy_conflock(struct file_lock *new, struct file_lock *fl)
{
return;
@@ -307,18 +369,24 @@ static inline void lease_get_mtime(struct inode *inode,
}
static inline int generic_setlease(struct file *filp, int arg,
- struct file_lock **flp, void **priv)
+ struct file_lease **flp, void **priv)
+{
+ return -EINVAL;
+}
+
+static inline int kernel_setlease(struct file *filp, int arg,
+ struct file_lease **lease, void **priv)
{
return -EINVAL;
}
static inline int vfs_setlease(struct file *filp, int arg,
- struct file_lock **lease, void **priv)
+ struct file_lease **lease, void **priv)
{
return -EINVAL;
}
-static inline int lease_modify(struct file_lock *fl, int arg,
+static inline int lease_modify(struct file_lease *fl, int arg,
struct list_head *dispose)
{
return -EINVAL;
@@ -341,6 +409,9 @@ locks_inode_context(const struct inode *inode)
#endif /* !CONFIG_FILE_LOCKING */
+/* for walking lists of file_locks linked by fl_list */
+#define for_each_file_lock(_fl, _head) list_for_each_entry(_fl, _head, c.flc_list)
+
static inline int locks_lock_file_wait(struct file *filp, struct file_lock *fl)
{
return locks_lock_inode_wait(file_inode(filp), fl);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index b26796ccc309..a87b776016a8 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1061,6 +1061,7 @@ struct file *get_file_active(struct file **f);
typedef void *fl_owner_t;
struct file_lock;
+struct file_lease;
/* The following constant reflects the upper bound of the file/locking space */
#ifndef OFFSET_MAX
@@ -2013,7 +2014,7 @@ struct file_operations {
ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
void (*splice_eof)(struct file *file);
- int (*setlease)(struct file *, int, struct file_lock **, void **);
+ int (*setlease)(struct file *, int, struct file_lease **, void **);
long (*fallocate)(struct file *file, int mode, loff_t offset,
loff_t len);
void (*show_fdinfo)(struct seq_file *m, struct file *f);
@@ -3254,7 +3255,7 @@ extern int simple_write_begin(struct file *file, struct address_space *mapping,
extern const struct address_space_operations ram_aops;
extern int always_delete_dentry(const struct dentry *);
extern struct inode *alloc_anon_inode(struct super_block *);
-extern int simple_nosetlease(struct file *, int, struct file_lock **, void **);
+extern int simple_nosetlease(struct file *, int, struct file_lease **, void **);
extern const struct dentry_operations simple_dentry_operations;
extern struct dentry *simple_lookup(struct inode *, struct dentry *, unsigned int flags);
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index 9f565416d186..1b95fe31051f 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -375,12 +375,12 @@ static inline int nlm_privileged_requester(const struct svc_rqst *rqstp)
static inline int nlm_compare_locks(const struct file_lock *fl1,
const struct file_lock *fl2)
{
- return file_inode(fl1->fl_file) == file_inode(fl2->fl_file)
- && fl1->fl_pid == fl2->fl_pid
- && fl1->fl_owner == fl2->fl_owner
+ return file_inode(fl1->c.flc_file) == file_inode(fl2->c.flc_file)
+ && fl1->c.flc_pid == fl2->c.flc_pid
+ && fl1->c.flc_owner == fl2->c.flc_owner
&& fl1->fl_start == fl2->fl_start
&& fl1->fl_end == fl2->fl_end
- &&(fl1->fl_type == fl2->fl_type || fl2->fl_type == F_UNLCK);
+ &&(fl1->c.flc_type == fl2->c.flc_type || fl2->c.flc_type == F_UNLCK);
}
extern const struct lock_manager_operations nlmsvc_lock_operations;
diff --git a/include/linux/lockd/xdr.h b/include/linux/lockd/xdr.h
index b60fbcd8cdfa..80cca9426761 100644
--- a/include/linux/lockd/xdr.h
+++ b/include/linux/lockd/xdr.h
@@ -52,7 +52,7 @@ struct nlm_lock {
* FreeBSD uses 16, Apple Mac OS X 10.3 uses 20. Therefore we set it to
* 32 bytes.
*/
-
+
struct nlm_cookie
{
unsigned char data[NLM_MAXCOOKIELEN];
diff --git a/include/trace/events/afs.h b/include/trace/events/afs.h
index 08f2c93d6b16..450c44c83a5d 100644
--- a/include/trace/events/afs.h
+++ b/include/trace/events/afs.h
@@ -1189,8 +1189,8 @@ TRACE_EVENT(afs_flock_op,
__entry->from = fl->fl_start;
__entry->len = fl->fl_end - fl->fl_start + 1;
__entry->op = op;
- __entry->type = fl->fl_type;
- __entry->flags = fl->fl_flags;
+ __entry->type = fl->c.flc_type;
+ __entry->flags = fl->c.flc_flags;
__entry->debug_id = fl->fl_u.afs.debug_id;
),
diff --git a/include/trace/events/filelock.h b/include/trace/events/filelock.h
index 1646dadd7f37..b8d1e00a7982 100644
--- a/include/trace/events/filelock.h
+++ b/include/trace/events/filelock.h
@@ -68,11 +68,11 @@ DECLARE_EVENT_CLASS(filelock_lock,
__field(struct file_lock *, fl)
__field(unsigned long, i_ino)
__field(dev_t, s_dev)
- __field(struct file_lock *, fl_blocker)
- __field(fl_owner_t, fl_owner)
- __field(unsigned int, fl_pid)
- __field(unsigned int, fl_flags)
- __field(unsigned char, fl_type)
+ __field(struct file_lock_core *, blocker)
+ __field(fl_owner_t, owner)
+ __field(unsigned int, pid)
+ __field(unsigned int, flags)
+ __field(unsigned char, type)
__field(loff_t, fl_start)
__field(loff_t, fl_end)
__field(int, ret)
@@ -82,11 +82,11 @@ DECLARE_EVENT_CLASS(filelock_lock,
__entry->fl = fl ? fl : NULL;
__entry->s_dev = inode->i_sb->s_dev;
__entry->i_ino = inode->i_ino;
- __entry->fl_blocker = fl ? fl->fl_blocker : NULL;
- __entry->fl_owner = fl ? fl->fl_owner : NULL;
- __entry->fl_pid = fl ? fl->fl_pid : 0;
- __entry->fl_flags = fl ? fl->fl_flags : 0;
- __entry->fl_type = fl ? fl->fl_type : 0;
+ __entry->blocker = fl ? fl->c.flc_blocker : NULL;
+ __entry->owner = fl ? fl->c.flc_owner : NULL;
+ __entry->pid = fl ? fl->c.flc_pid : 0;
+ __entry->flags = fl ? fl->c.flc_flags : 0;
+ __entry->type = fl ? fl->c.flc_type : 0;
__entry->fl_start = fl ? fl->fl_start : 0;
__entry->fl_end = fl ? fl->fl_end : 0;
__entry->ret = ret;
@@ -94,9 +94,9 @@ DECLARE_EVENT_CLASS(filelock_lock,
TP_printk("fl=%p dev=0x%x:0x%x ino=0x%lx fl_blocker=%p fl_owner=%p fl_pid=%u fl_flags=%s fl_type=%s fl_start=%lld fl_end=%lld ret=%d",
__entry->fl, MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
- __entry->i_ino, __entry->fl_blocker, __entry->fl_owner,
- __entry->fl_pid, show_fl_flags(__entry->fl_flags),
- show_fl_type(__entry->fl_type),
+ __entry->i_ino, __entry->blocker, __entry->owner,
+ __entry->pid, show_fl_flags(__entry->flags),
+ show_fl_type(__entry->type),
__entry->fl_start, __entry->fl_end, __entry->ret)
);
@@ -117,59 +117,59 @@ DEFINE_EVENT(filelock_lock, flock_lock_inode,
TP_ARGS(inode, fl, ret));
DECLARE_EVENT_CLASS(filelock_lease,
- TP_PROTO(struct inode *inode, struct file_lock *fl),
+ TP_PROTO(struct inode *inode, struct file_lease *fl),
TP_ARGS(inode, fl),
TP_STRUCT__entry(
- __field(struct file_lock *, fl)
+ __field(struct file_lease *, fl)
__field(unsigned long, i_ino)
__field(dev_t, s_dev)
- __field(struct file_lock *, fl_blocker)
- __field(fl_owner_t, fl_owner)
- __field(unsigned int, fl_flags)
- __field(unsigned char, fl_type)
- __field(unsigned long, fl_break_time)
- __field(unsigned long, fl_downgrade_time)
+ __field(struct file_lock_core *, blocker)
+ __field(fl_owner_t, owner)
+ __field(unsigned int, flags)
+ __field(unsigned char, type)
+ __field(unsigned long, break_time)
+ __field(unsigned long, downgrade_time)
),
TP_fast_assign(
__entry->fl = fl ? fl : NULL;
__entry->s_dev = inode->i_sb->s_dev;
__entry->i_ino = inode->i_ino;
- __entry->fl_blocker = fl ? fl->fl_blocker : NULL;
- __entry->fl_owner = fl ? fl->fl_owner : NULL;
- __entry->fl_flags = fl ? fl->fl_flags : 0;
- __entry->fl_type = fl ? fl->fl_type : 0;
- __entry->fl_break_time = fl ? fl->fl_break_time : 0;
- __entry->fl_downgrade_time = fl ? fl->fl_downgrade_time : 0;
+ __entry->blocker = fl ? fl->c.flc_blocker : NULL;
+ __entry->owner = fl ? fl->c.flc_owner : NULL;
+ __entry->flags = fl ? fl->c.flc_flags : 0;
+ __entry->type = fl ? fl->c.flc_type : 0;
+ __entry->break_time = fl ? fl->fl_break_time : 0;
+ __entry->downgrade_time = fl ? fl->fl_downgrade_time : 0;
),
TP_printk("fl=%p dev=0x%x:0x%x ino=0x%lx fl_blocker=%p fl_owner=%p fl_flags=%s fl_type=%s fl_break_time=%lu fl_downgrade_time=%lu",
__entry->fl, MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
- __entry->i_ino, __entry->fl_blocker, __entry->fl_owner,
- show_fl_flags(__entry->fl_flags),
- show_fl_type(__entry->fl_type),
- __entry->fl_break_time, __entry->fl_downgrade_time)
+ __entry->i_ino, __entry->blocker, __entry->owner,
+ show_fl_flags(__entry->flags),
+ show_fl_type(__entry->type),
+ __entry->break_time, __entry->downgrade_time)
);
-DEFINE_EVENT(filelock_lease, break_lease_noblock, TP_PROTO(struct inode *inode, struct file_lock *fl),
+DEFINE_EVENT(filelock_lease, break_lease_noblock, TP_PROTO(struct inode *inode, struct file_lease *fl),
TP_ARGS(inode, fl));
-DEFINE_EVENT(filelock_lease, break_lease_block, TP_PROTO(struct inode *inode, struct file_lock *fl),
+DEFINE_EVENT(filelock_lease, break_lease_block, TP_PROTO(struct inode *inode, struct file_lease *fl),
TP_ARGS(inode, fl));
-DEFINE_EVENT(filelock_lease, break_lease_unblock, TP_PROTO(struct inode *inode, struct file_lock *fl),
+DEFINE_EVENT(filelock_lease, break_lease_unblock, TP_PROTO(struct inode *inode, struct file_lease *fl),
TP_ARGS(inode, fl));
-DEFINE_EVENT(filelock_lease, generic_delete_lease, TP_PROTO(struct inode *inode, struct file_lock *fl),
+DEFINE_EVENT(filelock_lease, generic_delete_lease, TP_PROTO(struct inode *inode, struct file_lease *fl),
TP_ARGS(inode, fl));
-DEFINE_EVENT(filelock_lease, time_out_leases, TP_PROTO(struct inode *inode, struct file_lock *fl),
+DEFINE_EVENT(filelock_lease, time_out_leases, TP_PROTO(struct inode *inode, struct file_lease *fl),
TP_ARGS(inode, fl));
TRACE_EVENT(generic_add_lease,
- TP_PROTO(struct inode *inode, struct file_lock *fl),
+ TP_PROTO(struct inode *inode, struct file_lease *fl),
TP_ARGS(inode, fl),
@@ -179,9 +179,9 @@ TRACE_EVENT(generic_add_lease,
__field(int, rcount)
__field(int, icount)
__field(dev_t, s_dev)
- __field(fl_owner_t, fl_owner)
- __field(unsigned int, fl_flags)
- __field(unsigned char, fl_type)
+ __field(fl_owner_t, owner)
+ __field(unsigned int, flags)
+ __field(unsigned char, type)
),
TP_fast_assign(
@@ -190,21 +190,21 @@ TRACE_EVENT(generic_add_lease,
__entry->wcount = atomic_read(&inode->i_writecount);
__entry->rcount = atomic_read(&inode->i_readcount);
__entry->icount = atomic_read(&inode->i_count);
- __entry->fl_owner = fl->fl_owner;
- __entry->fl_flags = fl->fl_flags;
- __entry->fl_type = fl->fl_type;
+ __entry->owner = fl->c.flc_owner;
+ __entry->flags = fl->c.flc_flags;
+ __entry->type = fl->c.flc_type;
),
TP_printk("dev=0x%x:0x%x ino=0x%lx wcount=%d rcount=%d icount=%d fl_owner=%p fl_flags=%s fl_type=%s",
MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
__entry->i_ino, __entry->wcount, __entry->rcount,
- __entry->icount, __entry->fl_owner,
- show_fl_flags(__entry->fl_flags),
- show_fl_type(__entry->fl_type))
+ __entry->icount, __entry->owner,
+ show_fl_flags(__entry->flags),
+ show_fl_type(__entry->type))
);
TRACE_EVENT(leases_conflict,
- TP_PROTO(bool conflict, struct file_lock *lease, struct file_lock *breaker),
+ TP_PROTO(bool conflict, struct file_lease *lease, struct file_lease *breaker),
TP_ARGS(conflict, lease, breaker),
@@ -220,11 +220,11 @@ TRACE_EVENT(leases_conflict,
TP_fast_assign(
__entry->lease = lease;
- __entry->l_fl_flags = lease->fl_flags;
- __entry->l_fl_type = lease->fl_type;
+ __entry->l_fl_flags = lease->c.flc_flags;
+ __entry->l_fl_type = lease->c.flc_type;
__entry->breaker = breaker;
- __entry->b_fl_flags = breaker->fl_flags;
- __entry->b_fl_type = breaker->fl_type;
+ __entry->b_fl_flags = breaker->c.flc_flags;
+ __entry->b_fl_type = breaker->c.flc_type;
__entry->conflict = conflict;
),