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block: Export integrity data interval size in sysfs

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The size of the data interval was not exported in the sysfs integrity
directory. Export it so that userland apps can tell whether the interval
is different from the device's logical block size.

Signed-off-by: Martin K. Petersen <[email protected]>
Reviewed-by: Sagi Grimberg <[email protected]>
Signed-off-by: Dan Williams <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Martin K. Petersen 2015-10-21 13:19:43 -04:00 • committed by Jens Axboe
commit 4c241d08db
2 changed files with 21 additions and 0 deletions
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14
block/blk-integrity.c
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@ -289,6 +289,14 @@ static ssize_t integrity_tag_size_show(struct blk_integrity *bi, char *page)
return sprintf(page, "0\n");
}
static ssize_t integrity_interval_show(struct blk_integrity *bi, char *page)
{
if (bi != NULL)
return sprintf(page, "%u\n", 1 << bi->interval_exp);
else
return sprintf(page, "0\n");
}
static ssize_t integrity_verify_store(struct blk_integrity *bi,
const char *page, size_t count)
{
@ -343,6 +351,11 @@ static struct integrity_sysfs_entry integrity_tag_size_entry = {
.show = integrity_tag_size_show,
};
static struct integrity_sysfs_entry integrity_interval_entry = {
.attr = { .name = "protection_interval_bytes", .mode = S_IRUGO },
.show = integrity_interval_show,
};
static struct integrity_sysfs_entry integrity_verify_entry = {
.attr = { .name = "read_verify", .mode = S_IRUGO | S_IWUSR },
.show = integrity_verify_show,
@ -363,6 +376,7 @@ static struct integrity_sysfs_entry integrity_device_entry = {
static struct attribute *integrity_attrs[] = {
&integrity_format_entry.attr,
&integrity_tag_size_entry.attr,
&integrity_interval_entry.attr,
&integrity_verify_entry.attr,
&integrity_generate_entry.attr,
&integrity_device_entry.attr,