From 56de210245487ef1f1416c8ec9e581ebdd0d32ec Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 27 Feb 2013 17:04:01 -0800 Subject: drbd: convert to idr_alloc() Convert to the much saner new idr interface. Signed-off-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/block/drbd/drbd_main.c | 29 +++++++++++++---------------- 1 file changed, 13 insertions(+), 16 deletions(-) diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index 8c13eeb83c5..e98da675f0c 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -2660,25 +2660,24 @@ enum drbd_ret_code conn_new_minor(struct drbd_tconn *tconn, unsigned int minor, mdev->read_requests = RB_ROOT; mdev->write_requests = RB_ROOT; - if (!idr_pre_get(&minors, GFP_KERNEL)) - goto out_no_minor_idr; - if (idr_get_new_above(&minors, mdev, minor, &minor_got)) + minor_got = idr_alloc(&minors, mdev, minor, minor + 1, GFP_KERNEL); + if (minor_got < 0) { + if (minor_got == -ENOSPC) { + err = ERR_MINOR_EXISTS; + drbd_msg_put_info("requested minor exists already"); + } goto out_no_minor_idr; - if (minor_got != minor) { - err = ERR_MINOR_EXISTS; - drbd_msg_put_info("requested minor exists already"); - goto out_idr_remove_minor; } - if (!idr_pre_get(&tconn->volumes, GFP_KERNEL)) - goto out_idr_remove_minor; - if (idr_get_new_above(&tconn->volumes, mdev, vnr, &vnr_got)) + vnr_got = idr_alloc(&tconn->volumes, mdev, vnr, vnr + 1, GFP_KERNEL); + if (vnr_got < 0) { + if (vnr_got == -ENOSPC) { + err = ERR_INVALID_REQUEST; + drbd_msg_put_info("requested volume exists already"); + } goto out_idr_remove_minor; - if (vnr_got != vnr) { - err = ERR_INVALID_REQUEST; - drbd_msg_put_info("requested volume exists already"); - goto out_idr_remove_vol; } + add_disk(disk); kref_init(&mdev->kref); /* one ref for both idrs and the the add_disk */ @@ -2689,8 +2688,6 @@ enum drbd_ret_code conn_new_minor(struct drbd_tconn *tconn, unsigned int minor, return NO_ERROR; -out_idr_remove_vol: - idr_remove(&tconn->volumes, vnr_got); out_idr_remove_minor: idr_remove(&minors, minor_got); synchronize_rcu(); -- cgit v1.2.3-18-g5258