A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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block: don't take lock on changing ra_pages

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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 Also remove out of date comment for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 <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Wu Fengguang 2008-11-25 09:08:39 +01:00 • committed by Jens Axboe
commit 7c239517d9
3 changed files with 1 additions and 10 deletions
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2
block/ioctl.c
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@ -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 */