blkdev_issue_zeroout
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## Name

blkdev_issue_zeroout — zero-fill a block range

## Synopsis

`int blkdev_issue_zeroout (` | struct block_device * bdev,
| sector_t sector,
| sector_t nr_sects,
| gfp_t gfp_mask`)`;

## Arguments

`bdev`

  blockdev to write

`sector`

  start sector

`nr_sects`

  number of sectors to write

`gfp_mask`

  memory allocation flags (for bio_alloc)

## Description

Generate and issue number of bios with zerofiled pages.

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