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 Also remove out of date comment for queue_max_sectors_store().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/compat_ioctl.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'block/compat_ioctl.c') diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c index 67eb93cff69..f87615dea46 100644 --- a/block/compat_ioctl.c +++ b/block/compat_ioctl.c @@ -774,9 +774,7 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) 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 BLKGETSIZE: size = bdev->bd_inode->i_size; -- cgit v1.2.3