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>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index dd73e1ff1759..46c282fff104 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -395,7 +395,7 @@ aoeblk_gdalloc(void *vp)
         WARN_ON(d->flags & DEVFL_TKILL);
         WARN_ON(d->gd);
         WARN_ON(d->flags & DEVFL_UP);
-        blk_queue_max_hw_sectors(q, BLK_DEF_MAX_SECTORS);
+        blk_queue_max_hw_sectors(q, 1024);
         q->backing_dev_info.name = "aoe";
         q->backing_dev_info.ra_pages = READ_AHEAD / PAGE_CACHE_SIZE;
         d->bufpool = mp;