LOCKS_MANDATORY_AREA(9)                   The Linux VFS                   LOCKS_MANDATORY_AREA(9)



NAME
       locks_mandatory_area - Check for a conflicting lock

SYNOPSIS
       int locks_mandatory_area(struct inode * inode, struct file * filp, loff_t start,
                                loff_t end, unsigned char type);

ARGUMENTS
       inode
           the file to check

       filp
           how the file was opened (if it was)

       start
           first byte in the file to check

       end
           lastbyte in the file to check

       type
           F_WRLCK for a write lock, else F_RDLCK

DESCRIPTION
       Searches the inode's list of locks to find any POSIX locks which conflict.

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