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    block: adjust blkdev_issue_discard for swap · 3e6053d7
    Hugh Dickins 提交于
    Two mods to blkdev_issue_discard(), thinking ahead to its use on swap:
    
    1. Add gfp_mask argument, so swap allocation can use it where GFP_KERNEL
       might deadlock but GFP_NOIO is safe.
    
    2. Enlarge nr_sects argument from unsigned to sector_t: unsigned long is
       enough to cover a whole swap area, but sector_t suits any partition.
    
    Change sb_issue_discard()'s nr_blocks to sector_t too; but no need seen
    for a gfp_mask there, just pass GFP_KERNEL down to blkdev_issue_discard().
    Signed-off-by: NHugh Dickins <hugh@veritas.com>
    Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
    3e6053d7
blk-barrier.c 9.0 KB