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0efaa7e82f
Ensure that it's OK to pass in a NULL file_lock double pointer on a F_UNLCK request and convert the vfs_setlease F_UNLCK callers to do just that. Finally, turn the BUG_ON in generic_setlease into a WARN_ON_ONCE with an error return. That's a problem we can handle without crashing the box if it occurs. Signed-off-by: Jeff Layton <jlayton@primarydata.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/*
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* Events for filesystem locks
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*
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* Copyright 2013 Jeff Layton <jlayton@poochiereds.net>
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*/
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM filelock
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#if !defined(_TRACE_FILELOCK_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_FILELOCK_H
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#include <linux/tracepoint.h>
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#include <linux/fs.h>
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#include <linux/device.h>
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#include <linux/kdev_t.h>
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#define show_fl_flags(val) \
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__print_flags(val, "|", \
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{ FL_POSIX, "FL_POSIX" }, \
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{ FL_FLOCK, "FL_FLOCK" }, \
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{ FL_DELEG, "FL_DELEG" }, \
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{ FL_ACCESS, "FL_ACCESS" }, \
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{ FL_EXISTS, "FL_EXISTS" }, \
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{ FL_LEASE, "FL_LEASE" }, \
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{ FL_CLOSE, "FL_CLOSE" }, \
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{ FL_SLEEP, "FL_SLEEP" }, \
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{ FL_DOWNGRADE_PENDING, "FL_DOWNGRADE_PENDING" }, \
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{ FL_UNLOCK_PENDING, "FL_UNLOCK_PENDING" }, \
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{ FL_OFDLCK, "FL_OFDLCK" })
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#define show_fl_type(val) \
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__print_symbolic(val, \
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{ F_RDLCK, "F_RDLCK" }, \
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{ F_WRLCK, "F_WRLCK" }, \
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{ F_UNLCK, "F_UNLCK" })
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DECLARE_EVENT_CLASS(filelock_lease,
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TP_PROTO(struct inode *inode, struct file_lock *fl),
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TP_ARGS(inode, fl),
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TP_STRUCT__entry(
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__field(struct file_lock *, fl)
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__field(unsigned long, i_ino)
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__field(dev_t, s_dev)
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__field(struct file_lock *, fl_next)
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__field(fl_owner_t, fl_owner)
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__field(unsigned int, fl_flags)
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__field(unsigned char, fl_type)
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__field(unsigned long, fl_break_time)
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__field(unsigned long, fl_downgrade_time)
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),
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TP_fast_assign(
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__entry->fl = fl ? fl : NULL;
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__entry->s_dev = inode->i_sb->s_dev;
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__entry->i_ino = inode->i_ino;
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__entry->fl_next = fl ? fl->fl_next : NULL;
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__entry->fl_owner = fl ? fl->fl_owner : NULL;
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__entry->fl_flags = fl ? fl->fl_flags : 0;
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__entry->fl_type = fl ? fl->fl_type : 0;
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__entry->fl_break_time = fl ? fl->fl_break_time : 0;
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__entry->fl_downgrade_time = fl ? fl->fl_downgrade_time : 0;
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),
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TP_printk("fl=0x%p dev=0x%x:0x%x ino=0x%lx fl_next=0x%p fl_owner=0x%p fl_flags=%s fl_type=%s fl_break_time=%lu fl_downgrade_time=%lu",
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__entry->fl, MAJOR(__entry->s_dev), MINOR(__entry->s_dev),
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__entry->i_ino, __entry->fl_next, __entry->fl_owner,
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show_fl_flags(__entry->fl_flags),
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show_fl_type(__entry->fl_type),
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__entry->fl_break_time, __entry->fl_downgrade_time)
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);
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DEFINE_EVENT(filelock_lease, break_lease_noblock, TP_PROTO(struct inode *inode, struct file_lock *fl),
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TP_ARGS(inode, fl));
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DEFINE_EVENT(filelock_lease, break_lease_block, TP_PROTO(struct inode *inode, struct file_lock *fl),
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TP_ARGS(inode, fl));
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DEFINE_EVENT(filelock_lease, break_lease_unblock, TP_PROTO(struct inode *inode, struct file_lock *fl),
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TP_ARGS(inode, fl));
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DEFINE_EVENT(filelock_lease, generic_add_lease, TP_PROTO(struct inode *inode, struct file_lock *fl),
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TP_ARGS(inode, fl));
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DEFINE_EVENT(filelock_lease, generic_delete_lease, TP_PROTO(struct inode *inode, struct file_lock *fl),
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TP_ARGS(inode, fl));
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DEFINE_EVENT(filelock_lease, time_out_leases, TP_PROTO(struct inode *inode, struct file_lock *fl),
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TP_ARGS(inode, fl));
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#endif /* _TRACE_FILELOCK_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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