Commit 77634f33 authored by Martin K. Petersen's avatar Martin K. Petersen Committed by Jens Axboe

block: Add missing bounce_pfn stacking and fix comments

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: default avatarMartin K. Petersen <>
Signed-off-by: default avatarJens Axboe <>
parent 9df1bb9b
......@@ -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,
......@@ -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
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