RFC use larger max_request_size for virtio_blk
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- v1 RFC Latest2 patches 3 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/2 | blk-setting: add new helper blk_queue_max_hw_sectors_no_limitblock/ include/ | +22 | 0 replies | |
| 2/2 | virtio_blk: add new module parameter to set max request sizedrivers/ | +30 | 0 replies |
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Cover letter [RFC PATCH 0/2] use larger max_request_size for virtio_blk
Hi,
For virtio block device, actually there is no a hard limit for max request size, and virtio_blk driver set -1 to blk_queue_max_hw_sectors(q, -1U);. But it doesn't work, because there is a default upper limitation BLK_DEF_MAX_SECTORS (1280 sectors). So this series want to add a new helper blk_queue_max_hw_sectors_no_limit to set a proper max reqeust size.
Weiping Zhang (2):
blk-setting: add new helper blk_queue_max_hw_sectors_no_limit
virtio_blk: add new module parameter to set max request size
block/blk-settings.c | 20 ++++++++++++++++++++ drivers/block/virtio_blk.c | 32 ++++++++++++++++++++++++++++++-- include/linux/blkdev.h | 2 ++ 3 files changed, 52 insertions(+), 2 deletions(-)
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2.9.4