From 34b48db66e08ca1c1bc07cf305d672ac940268dc Mon Sep 17 00:00:00 2001 From: Christoph Hellwig <hch@lst.de> Date: Sat, 6 Sep 2014 16:08:05 -0700 Subject: block: remove artifical max_hw_sectors cap Set max_sectors to the value the drivers provides as hardware limit by default. Linux had proper I/O throttling for a long time and doesn't rely on a artifically small maximum I/O size anymore. By not limiting the I/O size by default we remove an annoying tuning step required for most Linux installation. Note that both the user, and if absolutely required the driver can still impose a limit for FS requests below max_hw_sectors_kb. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com> --- block/blk-settings.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'block') diff --git a/block/blk-settings.c b/block/blk-settings.c index aa02247d227e..6ed2cbe5e8c9 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -257,9 +257,7 @@ void blk_limits_max_hw_sectors(struct queue_limits *limits, unsigned int max_hw_ __func__, max_hw_sectors); } - limits->max_hw_sectors = max_hw_sectors; - limits->max_sectors = min_t(unsigned int, max_hw_sectors, - BLK_DEF_MAX_SECTORS); + limits->max_sectors = limits->max_hw_sectors = max_hw_sectors; } EXPORT_SYMBOL(blk_limits_max_hw_sectors); -- cgit v1.2.2