VFS_TEST_LOCK(9)                          The Linux VFS                          VFS_TEST_LOCK(9)



NAME
       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.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                          VFS_TEST_LOCK(9)