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block: Add sysfs entry for fua support 

Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Kent Overstreet 2018-05-08 21:33:58 -04:00 committed by Jens Axboe
parent 1900fcc461
commit 6fcefbe578
1 changed files with 11 additions and 0 deletions
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11
block/blk-sysfs.c
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@ -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,