In order to allow for interruptible and asynchronous versions of
lock_page in conjunction with the wait_on_bit changes, we need to
define low-level lock page routines which take an additional
argument, i.e a wait queue entry and may return non-zero status,
e.g -EINTR, -EIOCBRETRY, -EWOULDBLOCK
In order to allow for interruptible and asynchronous versions of
lock_page in conjunction with the wait_on_bit changes, we need to
define low-level lock page routines which take an additional
argument, i.e a wait queue entry and may return non-zero status,
e.g -EINTR, -EIOCBRETRY, -EWOULDBLOCK
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