BLK_QUEUE_UPDATE_DMA(9) Block Devices BLK_QUEUE_UPDATE_DMA(9)NAME
blk_queue_update_dma_pad - update pad mask
SYNOPSIS
void blk_queue_update_dma_pad(struct request_queue * q, unsigned int mask);
ARGUMENTS
q
the request queue for the device
mask
pad mask
DESCRIPTION
Update dma pad mask.
Appending pad buffer to a request modifies the last entry of a scatter list such that it includes the pad buffer.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 BLK_QUEUE_UPDATE_DMA(9)
Check Out this Related Man Page
prefresh(3cur)prefresh(3cur)Name
prefresh, pnoutrefresh - refresh pad
Syntax
#include <cursesX.h>
int prefresh(pad, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol)
WINDOW *pad;
int pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol;
int pnoutrefresh(pad, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol)
WINDOW *pad;
int pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol;
Description
The routine copies the specified pad to the physical terminal screen. It takes account of what is already displayed on the screen to opti-
mize cursor movement.
The routine copies the named pad to the virtual screen. It then compares the virtual screen with the physical screen and performs the
actual update.
These routines are analogous to the routines and except that pads, instead of windows, are involved. Additional parameters are also needed
to indicate what part of the pad and screen are involved. The upper left corner of the part of the pad to be displayed is specified by and
The co-ordinates and specify the edges of the screen rectangle that will contain the selected part of the pad.
The lower right corner of the pad rectangle to be displayed is calculated from the screen co-ordinates. This ensures that the screen rec-
tangle and the pad rectangle are the same size.
Both rectangles must be entirely contained within their respective structures.
Return Values
The and functions return OK on success and ERR on error.
See Alsownoutrefresh(3cur), wrefresh(3cur)prefresh(3cur)
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