From 7c239517d9f18427fc2e7ed259fb3b866595f5af Mon Sep 17 00:00:00 2001 From: Wu Fengguang Date: Tue, 25 Nov 2008 09:08:39 +0100 Subject: 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 Also remove out of date comment for queue_max_sectors_store().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 Signed-off-by: Jens Axboe --- block/ioctl.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'block/ioctl.c') diff --git a/block/ioctl.c b/block/ioctl.c index d03985b04d67..0f22e629b13c 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 */ -- cgit v1.2.3-59-g8ed1b