diff options
| author |   Christoph Hellwig <hch@lst.de> | 2020-04-14 09:42:25 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2020-04-22 10:47:39 -0600 |
| commit | bdf8710d69f82ee6fd41b0166300c3306898b3c1 (patch) | |
| tree | 6c000bb2ac29bc058304faf583d58628cb97b34f /drivers/ide | |
| parent | block: move dma drain handling to scsi (diff) | |
| download | wireguard-linux-bdf8710d69f82ee6fd41b0166300c3306898b3c1.tar.xz wireguard-linux-bdf8710d69f82ee6fd41b0166300c3306898b3c1.zip | |
block: move dma_pad handling from blk_rq_map_sg into the callers
There are only two callers of blk_rq_map_sg/__blk_rq_map_sg that set
the dma_pad value in the queue. Move the handling into those callers
instead of burdening the common code, and move the ->extra_len field
from struct request to struct scsi_cmnd.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/ide-io.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index b137f27a34d5..c31f1d2b3b07 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -233,10 +233,13 @@ static ide_startstop_t do_special(ide_drive_t *drive) void ide_map_sg(ide_drive_t *drive, struct ide_cmd *cmd) { ide_hwif_t *hwif = drive->hwif; - struct scatterlist *sg = hwif->sg_table; + struct scatterlist *sg = hwif->sg_table, *last_sg = NULL; struct request *rq = cmd->rq; - cmd->sg_nents = blk_rq_map_sg(drive->queue, rq, sg); + cmd->sg_nents = __blk_rq_map_sg(drive->queue, rq, sg, &last_sg); + if (blk_rq_bytes(rq) && (blk_rq_bytes(rq) & rq->q->dma_pad_mask)) + last_sg->length += + (rq->q->dma_pad_mask & ~blk_rq_bytes(rq)) + 1; } EXPORT_SYMBOL_GPL(ide_map_sg); |