[PATCH v3 1/6] block: Fix a source code comment

[Bart Van Assche <bvanassche@acm.org>]

Fix a source code comment that is no longer correct since commit
889c57066cee ("block: make segment size limit workable for > 4K
PAGE_SIZE").

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 block/blk-settings.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/blk-settings.c b/block/blk-settings.c
index 78c83817b9d3..87724d30be4f 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -470,8 +470,8 @@ int blk_validate_limits(struct queue_limits *lim)
 	} else {
 		/*
 		 * The maximum segment size has an odd historic 64k default that
-		 * drivers probably should override.  Just like the I/O size we
-		 * require drivers to at least handle a full page per segment.
+		 * drivers probably should override. The maximum DMA segment
+		 * size may be less than the virtual memory page size.
 		 */
 		if (!lim->max_segment_size)
 			lim->max_segment_size = BLK_MAX_SEGMENT_SIZE;