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BDEV_STACK_LIMITS(9) Block Devices BDEV_STACK_LIMITS(9)

NAME

bdev_stack_limits - adjust queue limits for stacked drivers

SYNOPSIS

int bdev_stack_limits(struct queue_limits * t, struct block_device * bdev, sector_t start);

ARGUMENTS

struct queue_limits * t

the stacking driver limits (top device)

struct block_device * bdev

the component block_device (bottom)

sector_t start

first data sector within component device

DESCRIPTION

Merges queue limits for a top device and a block_device. Returns 0 if alignment didn't change. Returns -1 if adding the bottom device caused misalignment.

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June 2017 Kernel Hackers Manual 4.11