vfs_test_lock (9) Linux Manual Page
vfs_test_lock – test file byte range lock
Synopsis
int vfs_test_lock(struct file *filp, struct file_lock *fl);Arguments
filp
-
- The file to test lock for
fl
- The lock to test; also used to hold result
Description
Returns -ERRNO on failure. Indicates presence of conflicting lock by setting conf->fl_type to something other than F_UNLCK.