diff options
| author | Yigal Korman <yigal@plexistor.com> | 2016-06-23 23:05:51 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2016-07-21 05:01:08 +0200 |
| commit | ea6ca600eb90350259cee5514e97b91ad1bc1aa5 (patch) | |
| tree | 9dc83459ff157e16ad1951c11bfaaec6452dd5e1 /block | |
| parent | block: add QUEUE_FLAG_DAX for devices to advertise their DAX support (diff) | |
| download | linux-ea6ca600eb90350259cee5514e97b91ad1bc1aa5.tar.xz linux-ea6ca600eb90350259cee5514e97b91ad1bc1aa5.zip | |
block: expose QUEUE_FLAG_DAX in sysfs
Provides the ability to identify DAX enabled devices in userspace.
Signed-off-by: Yigal Korman <yigal@plexistor.com>
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-sysfs.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 99205965f559..f87a7e747d36 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_dax_show(struct request_queue *q, char *page) +{ + return queue_var_show(blk_queue_dax(q), page); +} + static struct queue_sysfs_entry queue_requests_entry = { .attr = {.name = "nr_requests", .mode = S_IRUGO | S_IWUSR }, .show = queue_requests_show, @@ -516,6 +521,11 @@ static struct queue_sysfs_entry queue_wc_entry = { .store = queue_wc_store, }; +static struct queue_sysfs_entry queue_dax_entry = { + .attr = {.name = "dax", .mode = S_IRUGO }, + .show = queue_dax_show, +}; + static struct attribute *default_attrs[] = { &queue_requests_entry.attr, &queue_ra_entry.attr, @@ -542,6 +552,7 @@ static struct attribute *default_attrs[] = { &queue_random_entry.attr, &queue_poll_entry.attr, &queue_wc_entry.attr, + &queue_dax_entry.attr, NULL, }; |