Merge branch 'akpm' (final batch from Andrew)

Merge third patch-bumb from Andrew Morton:
 "This wraps me up for -rc1.
   - Lots of misc stuff and things which were deferred/missed from
     patchbombings 1 & 2.
   - ocfs2 things
   - lib/scatterlist
   - hfsplus
   - fatfs
   - documentation
   - signals
   - procfs
   - lockdep
   - coredump
   - seqfile core
   - kexec
   - Tejun's large IDR tree reworkings
   - ipmi
   - partitions
   - nbd
   - random() things
   - kfifo
   - tools/testing/selftests updates
   - Sasha's large and pointless hlist cleanup"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (163 commits)
  hlist: drop the node parameter from iterators
  kcmp: make it depend on CHECKPOINT_RESTORE
  selftests: add a simple doc
  tools/testing/selftests/Makefile: rearrange targets
  selftests/efivarfs: add create-read test
  selftests/efivarfs: add empty file creation test
  selftests: add tests for efivarfs
  kfifo: fix kfifo_alloc() and kfifo_init()
  kfifo: move kfifo.c from kernel/ to lib/
  arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS
  w1: add support for DS2413 Dual Channel Addressable Switch
  memstick: move the dereference below the NULL test
  drivers/pps/clients/pps-gpio.c: use devm_kzalloc
  Documentation/DMA-API-HOWTO.txt: fix typo
  include/linux/eventfd.h: fix incorrect filename is a comment
  mtd: mtd_stresstest: use prandom_bytes()
  mtd: mtd_subpagetest: convert to use prandom library
  mtd: mtd_speedtest: use prandom_bytes
  mtd: mtd_pagetest: convert to use prandom library
  mtd: mtd_oobtest: convert to use prandom library
  ...

1 files changed, 13 insertions, 16 deletions

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 8c13eeb..e98da67 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();