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| author | Yigal Korman <yigal@plexistor.com> | 2016-06-23 14:49:32 -0400 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2016-07-20 12:43:37 -0400 |
| commit | 51d1a5abcd0e88cb4528f35643245ea59cf234f1 (patch) | |
| tree | a56f65c4fd8018a6a6d1d9965c133c55c1d8c3b6 | |
| parent | 6c00531c6affa42b165df73a1eac3289bc45f4c4 (diff) | |
| download | linux-dm-51d1a5abcd0e88cb4528f35643245ea59cf234f1.tar.gz | |
block: expose QUEUE_FLAG_DAX in sysfs
Notice: this object is not reachable from any branch.
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>
Notice: this object is not reachable from any branch.
| -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 99205965f5596..f87a7e747d360 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, }; |