Name
blkdev_issue_zeroout —
generate number of zero filed write bios
Synopsis
int fsfuncblkdev_issue_zeroout ( | struct block_device * bdev, |
| sector_t sector, |
| sector_t nr_sects, |
| gfp_t gfp_mask) ; |
Arguments
bdev
blockdev to issue
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.
Send barrier at the beginning and at the end if requested. This guarantie
correct request ordering. Empty barrier allow us to avoid post queue flush.