diff options
Diffstat (limited to 'block/blk-settings.c')
-rw-r--r-- | block/blk-settings.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c index 3c7d8d638ab5..d2731843f2fc 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -146,8 +146,7 @@ static int blk_validate_limits(struct queue_limits *lim) max_hw_sectors = min_not_zero(lim->max_hw_sectors, lim->max_dev_sectors); if (lim->max_user_sectors) { - if (lim->max_user_sectors > max_hw_sectors || - lim->max_user_sectors < PAGE_SIZE / SECTOR_SIZE) + if (lim->max_user_sectors < PAGE_SIZE / SECTOR_SIZE) return -EINVAL; lim->max_sectors = min(max_hw_sectors, lim->max_user_sectors); } else { @@ -183,17 +182,13 @@ static int blk_validate_limits(struct queue_limits *lim) return -EINVAL; /* - * Devices that require a virtual boundary do not support scatter/gather - * I/O natively, but instead require a descriptor list entry for each - * page (which might not be identical to the Linux PAGE_SIZE). Because - * of that they are not limited by our notion of "segment size". + * Stacking device may have both virtual boundary and max segment + * size limit, so allow this setting now, and long-term the two + * might need to move out of stacking limits since we have immutable + * bvec and lower layer bio splitting is supposed to handle the two + * correctly. */ - if (lim->virt_boundary_mask) { - if (WARN_ON_ONCE(lim->max_segment_size && - lim->max_segment_size != UINT_MAX)) - return -EINVAL; - lim->max_segment_size = UINT_MAX; - } else { + if (!lim->virt_boundary_mask) { /* * The maximum segment size has an odd historic 64k default that * drivers probably should override. Just like the I/O size we |