The queue limits already have a 'chunk_sectors' setting, so
we should be presenting it via sysfs.
Signed-off-by: Hannes Reinecke <h...@suse.de>
---
block/blk-sysfs.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index dd93763..ff97091 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -130,6 +130,26 @@ static ssize_t queue_physical_block_size_show(struct
request_queue *q, char *pag
return queue_var_show(queue_physical_block_size(q), page);
}
+static ssize_t queue_chunk_sectors_show(struct request_queue *q, char *page)
+{
+ return queue_var_show(q->limits.chunk_sectors, page);
+}
+
+static ssize_t
+queue_chunk_sectors_store(struct request_queue *q, const char *page, size_t
count)
+{
+ unsigned long chunk_sectors;
+
+ ssize_t ret = queue_var_store(&chunk_sectors, page, count);
+ if (ret < 0)
+ return ret;
+ spin_lock_irq(q->queue_lock);
+ blk_queue_chunk_sectors(q, chunk_sectors);
+ spin_unlock_irq(q->queue_lock);
+
+ return ret;
+}
+
static ssize_t queue_io_min_show(struct request_queue *q, char *page)
{
return queue_var_show(queue_io_min(q), page);
@@ -406,6 +426,12 @@ static struct queue_sysfs_entry
queue_physical_block_size_entry = {
.show = queue_physical_block_size_show,
};
+static struct queue_sysfs_entry queue_chunk_sectors_entry = {
+ .attr = {.name = "chunk_sectors", .mode = S_IRUGO | S_IWUSR },
+ .show = queue_chunk_sectors_show,
+ .store = queue_chunk_sectors_store,
+};
+
static struct queue_sysfs_entry queue_io_min_entry = {
.attr = {.name = "minimum_io_size", .mode = S_IRUGO },
.show = queue_io_min_show,
@@ -490,6 +516,7 @@ static struct attribute *default_attrs[] = {
&queue_hw_sector_size_entry.attr,
&queue_logical_block_size_entry.attr,
&queue_physical_block_size_entry.attr,
+ &queue_chunk_sectors_entry.attr,
&queue_io_min_entry.attr,
&queue_io_opt_entry.attr,
&queue_discard_granularity_entry.attr,
--
1.8.5.6
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