A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-31 04:01:48 -04:00
Code Issues Projects Releases Packages Wiki Activity

block: make partition array dynamic

Browse source 
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 <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Tejun Heo 2008-08-25 19:56:15 +09:00 • committed by Jens Axboe
commit 540eed5637
4 changed files with 154 additions and 27 deletions
Download patch file Download diff file Expand all files Collapse all files

2
block/ioctl.c
View file

@ -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: