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block: Add missing bounce_pfn stacking and fix comments

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DM no longer needs to set limits explicitly when calling blk_stack_limits.
Let the latter automatically deal with bounce_pfn scaling.

Fix kerneldoc variable names.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Martin K. Petersen 2009-06-09 06:23:22 +02:00 committed by Jens Axboe
parent 9df1bb9b51
commit 77634f33d4
1 changed files with 3 additions and 2 deletions
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5
block/blk-settings.c
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@ -445,7 +445,7 @@ EXPORT_SYMBOL(blk_queue_stack_limits);
/**
* blk_stack_limits - adjust queue_limits for stacked devices
* @t: the stacking driver limits (top)
* @bdev: the underlying queue limits (bottom)
* @b: the underlying queue limits (bottom)
* @offset: offset to beginning of data within component device
*
* Description:
@ -458,6 +458,7 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
{
t->max_sectors = min_not_zero(t->max_sectors, b->max_sectors);
t->max_hw_sectors = min_not_zero(t->max_hw_sectors, b->max_hw_sectors);
t->bounce_pfn = min_not_zero(t->bounce_pfn, b->bounce_pfn);
t->seg_boundary_mask = min_not_zero(t->seg_boundary_mask,
b->seg_boundary_mask);
@ -504,7 +505,7 @@ EXPORT_SYMBOL(blk_stack_limits);
/**
* disk_stack_limits - adjust queue limits for stacked drivers
* @t: MD/DM gendisk (top)
* @disk: MD/DM gendisk (top)
* @bdev: the underlying block device (bottom)
* @offset: offset to beginning of data within component device
*