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-rw-r--r--block/blk-settings.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c
index 9c009090c4b5..c646503e55d2 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -31,6 +31,7 @@ EXPORT_SYMBOL_GPL(blk_queue_rq_timeout);
*/
void blk_set_default_limits(struct queue_limits *lim)
{
+ lim->bio_max_bytes = UINT_MAX;
lim->max_segments = BLK_MAX_SEGMENTS;
lim->max_discard_segments = 1;
lim->max_integrity_segments = 0;
@@ -139,6 +140,10 @@ void blk_queue_max_hw_sectors(struct request_queue *q, unsigned int max_hw_secto
limits->logical_block_size >> SECTOR_SHIFT);
limits->max_sectors = max_sectors;
+ if (check_shl_overflow(max_sectors, SECTOR_SHIFT,
+ &limits->bio_max_bytes))
+ limits->bio_max_bytes = UINT_MAX;
+
q->backing_dev_info->io_pages = max_sectors >> (PAGE_SHIFT - 9);
}
EXPORT_SYMBOL(blk_queue_max_hw_sectors);