BLK_STACK_LIMITS(9) Block Devices BLK_STACK_LIMITS(9)NAME
blk_stack_limits - adjust queue_limits for stacked devices
int blk_stack_limits(struct queue_limits * t, struct queue_limits * b, sector_t start);
the stacking driver limits (top device)
the underlying queue limits (bottom, component device)
first data sector within component device
This function is used by stacking drivers like MD and DM to ensure that all component devices have compatible block sizes and alignments.
The stacking driver must provide a queue_limits struct (top) and then iteratively call the stacking function for all component (bottom)
devices. The stacking function will attempt to combine the values and ensure proper alignment.
Returns 0 if the top and bottom queue_limits are compatible. The top device's block sizes and alignment offsets may be adjusted to ensure
alignment with the bottom device. If no compatible sizes and alignments exist, -1 is returned and the resulting top queue_limits will have
the misaligned flag set to indicate that the alignment_offset is undefined.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 BLK_STACK_LIMITS(9)
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Tk_RestackWindow(3) Tk Library Procedures Tk_RestackWindow(3)__________________________________________________________________________________________________________________________________________________NAME
Tk_RestackWindow - Change a window's position in the stacking order
Tk_RestackWindow(tkwin, aboveBelow, other)
Tk_Window tkwin (in) Token for window to restack.
int aboveBelow (in) Indicates new position of tkwin relative to other; must be Above or Below.
Tk_Window other (in) Tkwin will be repositioned just above or below this window. Must be a sibling of tkwin or a descendant
of a sibling. If NULL then tkwin is restacked above or below all siblings.
Tk_RestackWindow changes the stacking order of window relative to its siblings. If other is specified as NULL then window is repositioned
at the top or bottom of its stacking order, depending on whether aboveBelow is Above or Below. If other has a non-NULL value then window
is repositioned just above or below other.
The aboveBelow argument must have one of the symbolic values Above or Below. Both of these values are defined by the include file
above, below, obscure, stacking order
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