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H A D | blk-merge.c | 943b40c8 Mon Aug 17 04:52:39 CDT 2020 Ming Lei <ming.lei@redhat.com> block: respect queue limit of max discard segment
When queue_max_discard_segments(q) is 1, blk_discard_mergable() will return false for discard request, then normal request merge is applied. However, only queue_max_segments() is checked, so max discard segment limit isn't respected.
Check max discard segment limit in the request merge code for fixing the issue.
Discard request failure of virtio_blk is fixed.
Fixes: 69840466086d ("block: fix the DISCARD request merge") Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> 943b40c8 Mon Aug 17 04:52:39 CDT 2020 Ming Lei <ming.lei@redhat.com> block: respect queue limit of max discard segment When queue_max_discard_segments(q) is 1, blk_discard_mergable() will return false for discard request, then normal request merge is applied. However, only queue_max_segments() is checked, so max discard segment limit isn't respected. Check max discard segment limit in the request merge code for fixing the issue. Discard request failure of virtio_blk is fixed. Fixes: 69840466086d ("block: fix the DISCARD request merge") Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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