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-rw-r--r--block/blk-sysfs.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index c2b821fa324a..306759bbdf1b 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -107,6 +107,19 @@ static ssize_t queue_max_sectors_show(struct request_queue *q, char *page)
107 return queue_var_show(max_sectors_kb, (page)); 107 return queue_var_show(max_sectors_kb, (page));
108} 108}
109 109
110static ssize_t queue_max_segments_show(struct request_queue *q, char *page)
111{
112 return queue_var_show(queue_max_segments(q), (page));
113}
114
115static ssize_t queue_max_segment_size_show(struct request_queue *q, char *page)
116{
117 if (test_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags))
118 return queue_var_show(queue_max_segment_size(q), (page));
119
120 return queue_var_show(PAGE_CACHE_SIZE, (page));
121}
122
110static ssize_t queue_logical_block_size_show(struct request_queue *q, char *page) 123static ssize_t queue_logical_block_size_show(struct request_queue *q, char *page)
111{ 124{
112 return queue_var_show(queue_logical_block_size(q), page); 125 return queue_var_show(queue_logical_block_size(q), page);
@@ -281,6 +294,16 @@ static struct queue_sysfs_entry queue_max_hw_sectors_entry = {
281 .show = queue_max_hw_sectors_show, 294 .show = queue_max_hw_sectors_show,
282}; 295};
283 296
297static struct queue_sysfs_entry queue_max_segments_entry = {
298 .attr = {.name = "max_segments", .mode = S_IRUGO },
299 .show = queue_max_segments_show,
300};
301
302static struct queue_sysfs_entry queue_max_segment_size_entry = {
303 .attr = {.name = "max_segment_size", .mode = S_IRUGO },
304 .show = queue_max_segment_size_show,
305};
306
284static struct queue_sysfs_entry queue_iosched_entry = { 307static struct queue_sysfs_entry queue_iosched_entry = {
285 .attr = {.name = "scheduler", .mode = S_IRUGO | S_IWUSR }, 308 .attr = {.name = "scheduler", .mode = S_IRUGO | S_IWUSR },
286 .show = elv_iosched_show, 309 .show = elv_iosched_show,
@@ -356,6 +379,8 @@ static struct attribute *default_attrs[] = {
356 &queue_ra_entry.attr, 379 &queue_ra_entry.attr,
357 &queue_max_hw_sectors_entry.attr, 380 &queue_max_hw_sectors_entry.attr,
358 &queue_max_sectors_entry.attr, 381 &queue_max_sectors_entry.attr,
382 &queue_max_segments_entry.attr,
383 &queue_max_segment_size_entry.attr,
359 &queue_iosched_entry.attr, 384 &queue_iosched_entry.attr,
360 &queue_hw_sector_size_entry.attr, 385 &queue_hw_sector_size_entry.attr,
361 &queue_logical_block_size_entry.attr, 386 &queue_logical_block_size_entry.attr,