From: Yigal Korman <yi...@plexistor.com> Provides the ability to identify DAX enabled devices in userspace.
Signed-off-by: Yigal Korman <yi...@plexistor.com> Signed-off-by: Toshi Kani <toshi.k...@hpe.com> Acked-by: Dan Williams <dan.j.willi...@intel.com> Signed-off-by: Mike Snitzer <snit...@redhat.com> --- block/blk-sysfs.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 9920596..f87a7e7 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, }; -- 2.7.4 (Apple Git-66) _______________________________________________ Linux-nvdimm mailing list Linux-nvdimm@lists.01.org https://lists.01.org/mailman/listinfo/linux-nvdimm