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bc151f7b31
The Linux VFS handles mandatory locks generically so we shouldn't need to check for conflicting locks in zfs_read(), zfs_write(), or zfs_freesp(). Linux 3.18 removed the lock_may_read() and lock_may_write() interfaces which we were relying on for this purpose. Rather than emulating those interfaces we remove the redundant checks. Signed-off-by: Ned Bass <bass6@llnl.gov> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #2804