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authorArnd Bergmann <arnd@arndb.de>2010-07-08 10:18:46 +0200
committerJens Axboe <jaxboe@fusionio.com>2010-08-07 18:25:00 +0200
commit8a6cfeb6deca3a8fefd639d898b0d163c0b5d368 (patch)
tree9a633ad48c3b1ada0519ee7bade0602f940037f6 /drivers/block/brd.c
parent34484062445fe905bf02c72f87ddda21881acda3 (diff)
downloadop-kernel-dev-8a6cfeb6deca3a8fefd639d898b0d163c0b5d368.zip
op-kernel-dev-8a6cfeb6deca3a8fefd639d898b0d163c0b5d368.tar.gz
block: push down BKL into .locked_ioctl
As a preparation for the removal of the big kernel lock in the block layer, this removes the BKL from the common ioctl handling code, moving it into every single driver still using it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'drivers/block/brd.c')
-rw-r--r--drivers/block/brd.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index 1d2c186..1c7f637 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -15,6 +15,7 @@
#include <linux/blkdev.h>
#include <linux/bio.h>
#include <linux/highmem.h>
+#include <linux/smp_lock.h>
#include <linux/radix-tree.h>
#include <linux/buffer_head.h> /* invalidate_bh_lrus() */
#include <linux/slab.h>
@@ -401,6 +402,7 @@ static int brd_ioctl(struct block_device *bdev, fmode_t mode,
* ram device BLKFLSBUF has special semantics, we want to actually
* release and destroy the ramdisk data.
*/
+ lock_kernel();
mutex_lock(&bdev->bd_mutex);
error = -EBUSY;
if (bdev->bd_openers <= 1) {
@@ -417,13 +419,14 @@ static int brd_ioctl(struct block_device *bdev, fmode_t mode,
error = 0;
}
mutex_unlock(&bdev->bd_mutex);
+ unlock_kernel();
return error;
}
static const struct block_device_operations brd_fops = {
.owner = THIS_MODULE,
- .locked_ioctl = brd_ioctl,
+ .ioctl = brd_ioctl,
#ifdef CONFIG_BLK_DEV_XIP
.direct_access = brd_direct_access,
#endif
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