summaryrefslogtreecommitdiffstats
path: root/block/blk-sysfs.c
diff options
context:
space:
mode:
authorKent Overstreet <kent.overstreet@gmail.com>2018-05-08 21:33:58 -0400
committerJens Axboe <axboe@kernel.dk>2018-05-14 13:16:17 -0600
commit6fcefbe578811bf938908e1ec43347d205133ad0 (patch)
tree3b4e659dd85c87c648f22d86663d98aa0e2e3c97 /block/blk-sysfs.c
parent1900fcc461c91a84392cd0f62381253e57c37b66 (diff)
downloadlinux-0-day-6fcefbe578811bf938908e1ec43347d205133ad0.tar.gz
block: Add sysfs entry for fua support
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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 d00d1b0..cae525b 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -491,6 +491,11 @@ static ssize_t queue_wc_store(struct request_queue *q, const char *page,
return count;
}
+static ssize_t queue_fua_show(struct request_queue *q, char *page)
+{
+ return sprintf(page, "%u\n", test_bit(QUEUE_FLAG_FUA, &q->queue_flags));
+}
+
static ssize_t queue_dax_show(struct request_queue *q, char *page)
{
return queue_var_show(blk_queue_dax(q), page);
@@ -659,6 +664,11 @@ static struct queue_sysfs_entry queue_wc_entry = {
.store = queue_wc_store,
};
+static struct queue_sysfs_entry queue_fua_entry = {
+ .attr = {.name = "fua", .mode = S_IRUGO },
+ .show = queue_fua_show,
+};
+
static struct queue_sysfs_entry queue_dax_entry = {
.attr = {.name = "dax", .mode = S_IRUGO },
.show = queue_dax_show,
@@ -708,6 +718,7 @@ static struct attribute *default_attrs[] = {
&queue_random_entry.attr,
&queue_poll_entry.attr,
&queue_wc_entry.attr,
+ &queue_fua_entry.attr,
&queue_dax_entry.attr,
&queue_wb_lat_entry.attr,
&queue_poll_delay_entry.attr,