diff options
Diffstat (limited to 'drivers/block/rbd.c')
| -rw-r--r-- | drivers/block/rbd.c | 54 |
1 files changed, 23 insertions, 31 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 8e5140bbf241..282e2e82d849 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -428,14 +428,13 @@ static bool single_major = true; module_param(single_major, bool, 0444); MODULE_PARM_DESC(single_major, "Use a single major number for all rbd devices (default: true)"); -static ssize_t rbd_add(struct bus_type *bus, const char *buf, - size_t count); -static ssize_t rbd_remove(struct bus_type *bus, const char *buf, - size_t count); -static ssize_t rbd_add_single_major(struct bus_type *bus, const char *buf, - size_t count); -static ssize_t rbd_remove_single_major(struct bus_type *bus, const char *buf, - size_t count); +static ssize_t add_store(struct bus_type *bus, const char *buf, size_t count); +static ssize_t remove_store(struct bus_type *bus, const char *buf, + size_t count); +static ssize_t add_single_major_store(struct bus_type *bus, const char *buf, + size_t count); +static ssize_t remove_single_major_store(struct bus_type *bus, const char *buf, + size_t count); static int rbd_dev_image_probe(struct rbd_device *rbd_dev, int depth); static int rbd_dev_id_to_minor(int dev_id) @@ -464,16 +463,16 @@ static bool rbd_is_lock_owner(struct rbd_device *rbd_dev) return is_lock_owner; } -static ssize_t rbd_supported_features_show(struct bus_type *bus, char *buf) +static ssize_t supported_features_show(struct bus_type *bus, char *buf) { return sprintf(buf, "0x%llx\n", RBD_FEATURES_SUPPORTED); } -static BUS_ATTR(add, 0200, NULL, rbd_add); -static BUS_ATTR(remove, 0200, NULL, rbd_remove); -static BUS_ATTR(add_single_major, 0200, NULL, rbd_add_single_major); -static BUS_ATTR(remove_single_major, 0200, NULL, rbd_remove_single_major); -static BUS_ATTR(supported_features, 0444, rbd_supported_features_show, NULL); +static BUS_ATTR_WO(add); +static BUS_ATTR_WO(remove); +static BUS_ATTR_WO(add_single_major); +static BUS_ATTR_WO(remove_single_major); +static BUS_ATTR_RO(supported_features); static struct attribute *rbd_bus_attrs[] = { &bus_attr_add.attr, @@ -5934,9 +5933,7 @@ err_out_args: goto out; } -static ssize_t rbd_add(struct bus_type *bus, - const char *buf, - size_t count) +static ssize_t add_store(struct bus_type *bus, const char *buf, size_t count) { if (single_major) return -EINVAL; @@ -5944,9 +5941,8 @@ static ssize_t rbd_add(struct bus_type *bus, return do_rbd_add(bus, buf, count); } -static ssize_t rbd_add_single_major(struct bus_type *bus, - const char *buf, - size_t count) +static ssize_t add_single_major_store(struct bus_type *bus, const char *buf, + size_t count) { return do_rbd_add(bus, buf, count); } @@ -5986,7 +5982,6 @@ static ssize_t do_rbd_remove(struct bus_type *bus, struct list_head *tmp; int dev_id; char opt_buf[6]; - bool already = false; bool force = false; int ret; @@ -6019,13 +6014,13 @@ static ssize_t do_rbd_remove(struct bus_type *bus, spin_lock_irq(&rbd_dev->lock); if (rbd_dev->open_count && !force) ret = -EBUSY; - else - already = test_and_set_bit(RBD_DEV_FLAG_REMOVING, - &rbd_dev->flags); + else if (test_and_set_bit(RBD_DEV_FLAG_REMOVING, + &rbd_dev->flags)) + ret = -EINPROGRESS; spin_unlock_irq(&rbd_dev->lock); } spin_unlock(&rbd_dev_list_lock); - if (ret < 0 || already) + if (ret) return ret; if (force) { @@ -6050,9 +6045,7 @@ static ssize_t do_rbd_remove(struct bus_type *bus, return count; } -static ssize_t rbd_remove(struct bus_type *bus, - const char *buf, - size_t count) +static ssize_t remove_store(struct bus_type *bus, const char *buf, size_t count) { if (single_major) return -EINVAL; @@ -6060,9 +6053,8 @@ static ssize_t rbd_remove(struct bus_type *bus, return do_rbd_remove(bus, buf, count); } -static ssize_t rbd_remove_single_major(struct bus_type *bus, - const char *buf, - size_t count) +static ssize_t remove_single_major_store(struct bus_type *bus, const char *buf, + size_t count) { return do_rbd_remove(bus, buf, count); } |