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authorHannes Reinecke <hare@suse.de>2016-10-18 15:40:30 +0900
committerJens Axboe <axboe@fb.com>2016-10-18 10:02:02 -0600
commit87caf97cf54b5082e56af241b88a2b8a30d17ef3 (patch)
tree154aee6a24cb79b9f3aee44b3d5cd272bc27c4c3 /block/blk-sysfs.c
parent797476b88bde2a6001f9552f383f147e58c1a330 (diff)
downloadlinux-0-day-87caf97cf54b5082e56af241b88a2b8a30d17ef3.tar.gz
blk-sysfs: Add 'chunk_sectors' to sysfs attributes
The queue limits already have a 'chunk_sectors' setting, so we should be presenting it via sysfs. Signed-off-by: Hannes Reinecke <hare@suse.de> [Damien: Updated Documentation/ABI/testing/sysfs-block] Signed-off-by: Damien Le Moal <damien.lemoal@hgst.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Shaun Tancheff <shaun.tancheff@seagate.com> Tested-by: Shaun Tancheff <shaun.tancheff@seagate.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-sysfs.c')
-rw-r--r--block/blk-sysfs.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index ff9cd9c..488c2e2 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -130,6 +130,11 @@ 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_io_min_show(struct request_queue *q, char *page)
{
return queue_var_show(queue_io_min(q), page);
@@ -455,6 +460,11 @@ 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 },
+ .show = queue_chunk_sectors_show,
+};
+
static struct queue_sysfs_entry queue_io_min_entry = {
.attr = {.name = "minimum_io_size", .mode = S_IRUGO },
.show = queue_io_min_show,
@@ -555,6 +565,7 @@ 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,