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authorKent Overstreet <kent.overstreet@gmail.com>2016-12-11 13:31:27 -0900
committerKent Overstreet <kent.overstreet@gmail.com>2017-01-18 21:41:25 -0900
commit31bc018cf74f5bed01fda161d2df881c93213404 (patch)
treec8502b971d96103965744e5d4461647cf3a9f8f5
parent755abaff012ff855012d66802f53336162956ac1 (diff)
block: add sysfs entry for fua support
-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 9cc8d7c5439a..7f27a18cc4be 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -379,6 +379,11 @@ 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);
@@ -521,6 +526,11 @@ 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,
@@ -552,6 +562,7 @@ 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,
NULL,
};