From: Keith Busch Date: Thu, 10 Nov 2022 18:45:01 +0000 (-0800) Subject: dm-log-writes: set dma_alignment limit in io_hints X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=50a893359cd2643ee1afc96eedc9e7084cab49fa;p=linux.git dm-log-writes: set dma_alignment limit in io_hints This device mapper needs bio vectors to be sized and memory aligned to the logical block size. Set the minimum required queue limit accordingly. Signed-off-by: Keith Busch Reviewed-by: Mike Snitzer Link: https://lore.kernel.org/r/20221110184501.2451620-6-kbusch@meta.com Signed-off-by: Jens Axboe --- diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c index 20fd688f72e7c..178e13a5b059f 100644 --- a/drivers/md/dm-log-writes.c +++ b/drivers/md/dm-log-writes.c @@ -875,6 +875,7 @@ static void log_writes_io_hints(struct dm_target *ti, struct queue_limits *limit limits->logical_block_size = bdev_logical_block_size(lc->dev->bdev); limits->physical_block_size = bdev_physical_block_size(lc->dev->bdev); limits->io_min = limits->physical_block_size; + limits->dma_alignment = limits->logical_block_size - 1; } #if IS_ENABLED(CONFIG_FS_DAX)