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authorKay Sievers <kay.sievers@vrfy.org>2010-11-11 09:58:57 +0100
committerJens Axboe <jaxboe@fusionio.com>2010-11-11 09:58:57 +0100
commit34db1d595ef6f183fbc1e42cda45a3dfa0035258 (patch)
tree1fd9131f685dadd249c8bbb10c0c91eb6dc08a35 /fs
parent2b9408a45978dcda77407859148deeccf403c372 (diff)
downloadop-kernel-dev-34db1d595ef6f183fbc1e42cda45a3dfa0035258.zip
op-kernel-dev-34db1d595ef6f183fbc1e42cda45a3dfa0035258.tar.gz
block: export 'ro' sysfs attribute for partitions
We already export 'ro' for the disk. This adds the same attribute for partitions. Cc: Karel Zak <kzak@redhat.com> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/partitions/check.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 79fbf3f..861ae84 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -237,6 +237,13 @@ ssize_t part_size_show(struct device *dev,
return sprintf(buf, "%llu\n",(unsigned long long)p->nr_sects);
}
+ssize_t part_ro_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct hd_struct *p = dev_to_part(dev);
+ return sprintf(buf, "%d\n", p->policy ? 1 : 0);
+}
+
ssize_t part_alignment_offset_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -312,6 +319,7 @@ ssize_t part_fail_store(struct device *dev,
static DEVICE_ATTR(partition, S_IRUGO, part_partition_show, NULL);
static DEVICE_ATTR(start, S_IRUGO, part_start_show, NULL);
static DEVICE_ATTR(size, S_IRUGO, part_size_show, NULL);
+static DEVICE_ATTR(ro, S_IRUGO, part_ro_show, NULL);
static DEVICE_ATTR(alignment_offset, S_IRUGO, part_alignment_offset_show, NULL);
static DEVICE_ATTR(discard_alignment, S_IRUGO, part_discard_alignment_show,
NULL);
@@ -326,6 +334,7 @@ static struct attribute *part_attrs[] = {
&dev_attr_partition.attr,
&dev_attr_start.attr,
&dev_attr_size.attr,
+ &dev_attr_ro.attr,
&dev_attr_alignment_offset.attr,
&dev_attr_discard_alignment.attr,
&dev_attr_stat.attr,
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