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authorChristoph Hellwig <hch@lst.de>2014-09-06 16:08:05 -0700
committerJens Axboe <axboe@fb.com>2014-10-21 14:02:54 -0600
commit34b48db66e08ca1c1bc07cf305d672ac940268dc (patch)
tree06fc3e6639a492eb14c326bd8697c1ba9907c9da /block/blk-settings.c
parentc2661b806092d8ea2dccb7b02b65776555e0ee47 (diff)
downloadlinux-linaro-stable-34b48db66e08ca1c1bc07cf305d672ac940268dc.tar.gz
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>
Diffstat (limited to 'block/blk-settings.c')
-rw-r--r--block/blk-settings.c4
1 files changed, 1 insertions, 3 deletions
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);