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authorWu Fengguang <fengguang.wu@intel.com>2008-11-25 09:08:39 +0100
committerJens Axboe <jens.axboe@oracle.com>2008-12-29 08:28:43 +0100
commit7c239517d9f18427fc2e7ed259fb3b866595f5af (patch)
treecd2149cc2f2eb0faa83d38fe64e1228f7c703a85 /block/ioctl.c
parent42364690992e592c05f85c76fda4055820b48c1b (diff)
downloadlinaro-lsk-7c239517d9f18427fc2e7ed259fb3b866595f5af.tar.gz
block: don't take lock on changing ra_pages
There's no need to take queue_lock or kernel_lock when modifying bdi->ra_pages. So remove them. Also remove out of date comment for queue_max_sectors_store(). Signed-off-by: Wu Fengguang <wfg@linux.intel.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/ioctl.c')
-rw-r--r--block/ioctl.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/block/ioctl.c b/block/ioctl.c
index d03985b04d6..0f22e629b13 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -323,9 +323,7 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
bdi = blk_get_backing_dev_info(bdev);
if (bdi == NULL)
return -ENOTTY;
- lock_kernel();
bdi->ra_pages = (arg * 512) / PAGE_CACHE_SIZE;
- unlock_kernel();
return 0;
case BLKBSZSET:
/* set the logical block size */