File Locks

posix_lock_file — Apply a POSIX-style lock to a file
posix_lock_inode_wait — Apply a POSIX-style lock to a file
locks_mandatory_area — Check for a conflicting lock
__break_lease — revoke all outstanding leases on file
lease_get_mtime — get the last modified time of an inode
generic_setlease — sets a lease on an open file
vfs_setlease — sets a lease on an open file
flock_lock_inode_wait — Apply a FLOCK-style lock to a file
vfs_test_lock — test file byte range lock
vfs_lock_file — file byte range lock
posix_unblock_lock — stop waiting for a file lock
vfs_cancel_lock — file byte range unblock lock
locks_mandatory_locked — Check for an active lock
fcntl_getlease — Enquire what lease is currently active
check_conflicting_open — see if the given dentry points to a file that has an existing open that would conflict with the desired lease.
fcntl_setlease — sets a lease on an open file
sys_flockflock system call.