Commit f7cd8506 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Greg Kroah-Hartman

block: fix blk_rq_get_max_sectors for driver private requests

[ Upstream commit f2101842 ]

Driver private request types should not get the artifical cap for the
FS requests.  This is important to use the full device capabilities
for internal command or NVMe pass through commands.
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reported-by: default avatarJeff Lien <Jeff.Lien@hgst.com>
Tested-by: default avatarJeff Lien <Jeff.Lien@hgst.com>
Reviewed-by: default avatarKeith Busch <keith.busch@intel.com>

Updated by me to use an explicit check for the one command type that
does support extended checking, instead of relying on the ordering
of the enum command values - as suggested by Keith.
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 80cce3cd
......@@ -890,7 +890,7 @@ static inline unsigned int blk_rq_get_max_sectors(struct request *rq)
{
struct request_queue *q = rq->q;
if (unlikely(rq->cmd_type == REQ_TYPE_BLOCK_PC))
if (unlikely(rq->cmd_type != REQ_TYPE_FS))
return q->limits.max_hw_sectors;
if (!q->limits.chunk_sectors || (rq->cmd_flags & REQ_DISCARD))
......
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