1BLKDEV_ISSUE_DISCARD(9)          Block Devices         BLKDEV_ISSUE_DISCARD(9)
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NAME

6       blkdev_issue_discard - queue a discard
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SYNOPSIS

9       int blkdev_issue_discard(struct block_device * bdev, sector_t sector,
10                                sector_t nr_sects, gfp_t gfp_mask,
11                                unsigned long flags);
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ARGUMENTS

14       bdev
15           blockdev to issue discard for
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17       sector
18           start sector
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20       nr_sects
21           number of sectors to discard
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23       gfp_mask
24           memory allocation flags (for bio_alloc)
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26       flags
27           BLKDEV_IFL_* flags to control behaviour
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DESCRIPTION

30       Issue a discard request for the sectors in question.
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33Kernel Hackers Manual 3.10         June 2019           BLKDEV_ISSUE_DISCARD(9)
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