NAME
posix_lock_file_wait - Apply a POSIX-style lock to a file
SYNOPSIS
int posix_lock_file_wait(struct file * filp, struct file_lock * fl);
ARGUMENTS
filp
The file to apply the lock to
fl
The lock to be applied
DESCRIPTION
Add a POSIX style lock to a file. We merge adjacent & overlapping locks whenever possible. POSIX locks are sorted by owner task, then by starting address