X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/743b15655a24ee3fe9f458f383003e011db0558f..13fec9890cf095cc781fdf7b8917cb03bf32dd4c:/osfmk/man/default_pager_add_segment.html diff --git a/osfmk/man/default_pager_add_segment.html b/osfmk/man/default_pager_add_segment.html index ad7028b1a..e214d0072 100755 --- a/osfmk/man/default_pager_add_segment.html +++ b/osfmk/man/default_pager_add_segment.html @@ -1 +1,80 @@ -

default_pager_add_segment


Server Interface - Add additional backing storage for a default pager.

SYNOPSIS

#include< mach/default_pager_object.h>

kern_return_t   default_pager_add_segment
                (mach_port_t                      backing_store,
                 mach_port_t                             device,
                 recnum_t                                offset,
                 recnum_t                                 count,
                 int                                record_size);

PARAMETERS

backing_store
[in backing store (receive) right] The backing store port.

device
[in device port] The port for the device containing the backing storage partition.

offset
[in scalar] The offset, in record_size units, to the beginning of the backing storage on the device.

count
[in scalar] The number of record_size units in the partition/segment.

record_size
[in scalar] The size, in bytes, of the storage device record.

DESCRIPTION

The default_pager_add_segment function is called to add a partition to a default pager's backing storage (i.e. expand the amount of backing storage available to a memory manager). The kernel does not make this call itself (which is why it can be a synchronous call); this request is only issued by tasks holding the backing store port, created with default_pager_backing_store_create, for a default memory manager. The result is that the pager may use count records on device starting at offset for paging, and each record is record_size bytes in length (note that the device_* calls are, or can be, record oriented).

RETURN VALUES

KERN_FAILURE
The default pager does not support this operation.

KERN_INVALID_ARGUMENT
The backing_store port does not represent a valid backing store or the specified segment overlaps an existing partition.

KERN_RESOURCE_SHORTAGE
The default pager is unable to allocate internal resources to manage the new backing storage.

KERN_SUCCESS
The operation was successful.

RELATED INFORMATION

Functions: default_pager_backing_store_create, default_pager_backing_store_delete, default_pager_backing_store_info. \ No newline at end of file +

default_pager_add_segment

+
+

+Server Interface - Add additional backing storage for a default pager. +

SYNOPSIS

+
+#include< mach/default_pager_object.h>
+
+kern_return_t   default_pager_add_segment
+                (mach_port_t                      backing_store,
+                 mach_port_t                             device,
+                 recnum_t                                offset,
+                 recnum_t                                 count,
+                 int                                record_size);
+
+

PARAMETERS

+
+

+

backing_store +
+[in backing store (receive) right] The backing store port. +

+

device +
+[in device port] The port for the device containing the backing storage +partition. +

+

offset +
+[in scalar] The offset, in record_size units, to the beginning of the +backing storage on the device. +

+

count +
+[in scalar] The number of record_size units +in the partition/segment. +

+

record_size +
+[in scalar] The size, in bytes, of the storage device record. +
+

DESCRIPTION

+

+The default_pager_add_segment function is called to add a partition to +a default pager's backing storage (i.e. expand the amount of backing +storage available to a memory manager). The kernel does not make +this call itself (which is why it can be a synchronous call); this +request is only issued by tasks holding the backing store port, +created with default_pager_backing_store_create, for a default memory +manager. +The result is that the pager may use count records on device starting +at offset for paging, and each record is record_size bytes in length +(note that the device_* calls are, or can be, record oriented). +

RETURN VALUES

+
+

+

KERN_FAILURE +
+The default pager does not support this operation. +

+

KERN_INVALID_ARGUMENT +
+The backing_store port does not represent a valid backing store or the +specified segment overlaps an existing partition. +

+

KERN_RESOURCE_SHORTAGE +
+The default pager is unable to allocate internal resources + to manage the new backing storage. +

+

KERN_SUCCESS +
+The operation was successful. +
+

RELATED INFORMATION

+

+Functions: +default_pager_backing_store_create, +default_pager_backing_store_delete, +default_pager_backing_store_info.