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authorTejun Heo <tj@kernel.org>2008-08-25 19:56:15 +0900
committerJens Axboe <jens.axboe@oracle.com>2008-10-09 08:56:08 +0200
commit540eed5637b766bb1e881ef744c42617760b4815 (patch)
tree8bdf54967a8290f780216f767291623e67ee7e9b /block/ioctl.c
parent074a7aca7afa6f230104e8e65eba3420263714a5 (diff)
downloadlinaro-lsk-540eed5637b766bb1e881ef744c42617760b4815.tar.gz
block: make partition array dynamic
disk->__part used to be statically allocated to the maximum possible number of partitions. This patch makes partition array allocation dynamic. The added overhead is minimal as only real change is one memory dereference changed to RCU one. This saves both a bit of memory and cpu cycles iterating through unoccupied slots and makes increasing partition limit easier. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/ioctl.c')
-rw-r--r--block/ioctl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/ioctl.c b/block/ioctl.c
index 64e7c67a64b..38bee321e1f 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -30,7 +30,7 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
if (bdev != bdev->bd_contains)
return -EINVAL;
partno = p.pno;
- if (partno <= 0 || partno >= disk_max_parts(disk))
+ if (partno <= 0)
return -EINVAL;
switch (a.op) {
case BLKPG_ADD_PARTITION: