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38 .Fn aio_mlock "struct aiocb *iocb"
42 system call allows the calling process to lock into memory the
43 physical pages associated with the virtual address range starting at
48 The call returns immediately after the locking request has
49 been enqueued; the operation may or may not have completed at the time
54 pointer may be subsequently used as an argument to
58 in order to determine return or error status for the enqueued operation
59 while it is in progress.
61 If the request could not be enqueued (generally due to
64 then the call returns without having enqueued the request.
67 .Fa iocb->aio_sigevent
68 structure can be used to request notification of the operation's
69 completion as described in
72 The Asynchronous I/O Control Block structure pointed to by
74 and the buffer that the
76 member of that structure references must remain valid until the
77 operation has completed.
79 The asynchronous I/O control buffer
81 should be zeroed before the
83 call to avoid passing bogus context information to the kernel.
85 Modifications of the Asynchronous I/O Control Block structure or the
86 memory mapping described by the virtual address range are not allowed
87 while the request is queued.
93 system call will fail if:
96 The request was not queued because of system resource limitations.
98 The asynchronous notification method in
99 .Fa iocb->aio_sigevent.sigev_notify
100 is invalid or not supported.
103 If the request is successfully enqueued, but subsequently cancelled
104 or an error occurs, the value returned by the
106 system call is per the
108 system call, and the value returned by the
110 system call is one of the error returns from the
114 if the request was explicitly cancelled via a call to
128 extension, and should not be used in portable code.
132 system call first appeared in
135 The system call was introduced by
136 .An Gleb Smirnoff Aq Mt glebius@FreeBSD.org .