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[PATCH] md: export rdev->data_offset via sysfs

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Signed-off-by: Neil Brown <neilb@suse.de>
Acked-by: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
NeilBrown
2006-01-06 00:20:56 -08:00
committed by Linus Torvalds
parent 014236d2b8
commit 93c8cad03f
2 changed files with 29 additions and 0 deletions
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23
drivers/md/md.c
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@@ -1664,11 +1664,34 @@ slot_store(mdk_rdev_t *rdev, const char *buf, size_t len)
static struct rdev_sysfs_entry rdev_slot =
__ATTR(slot, 0644, slot_show, slot_store);
static ssize_t
offset_show(mdk_rdev_t *rdev, char *page)
{
return sprintf(page, "%llu\n", rdev->data_offset);
}
static ssize_t
offset_store(mdk_rdev_t *rdev, const char *buf, size_t len)
{
char *e;
unsigned long long offset = simple_strtoull(buf, &e, 10);
if (e==buf || (*e && *e != '\n'))
return -EINVAL;
if (rdev->mddev->pers)
return -EBUSY;
rdev->data_offset = offset;
return len;
}
static struct rdev_sysfs_entry rdev_offset =
__ATTR(offset, 0644, offset_show, offset_store);
static struct attribute *rdev_default_attrs[] = {
&rdev_state.attr,
&rdev_super.attr,
&rdev_errors.attr,
&rdev_slot.attr,
&rdev_offset.attr,
NULL,
};
static ssize_t