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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/message
parent34484062445fe905bf02c72f87ddda21881acda3 (diff)
downloadlinux-2.6.38-lt-ux500-8a6cfeb6deca3a8fefd639d898b0d163c0b5d368.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/message')
-rw-r--r--drivers/message/i2o/i2o_block.c22
1 files changed, 5 insertions, 17 deletions
diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c
index b8233ff863e..d1bdf8abe5d 100644
--- a/drivers/message/i2o/i2o_block.c
+++ b/drivers/message/i2o/i2o_block.c
@@ -53,7 +53,6 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2o.h>
-#include <linux/smp_lock.h>
#include <linux/mempool.h>
@@ -653,40 +652,30 @@ static int i2o_block_ioctl(struct block_device *bdev, fmode_t mode,
{
struct gendisk *disk = bdev->bd_disk;
struct i2o_block_device *dev = disk->private_data;
- int ret = -ENOTTY;
/* Anyone capable of this syscall can do *real bad* things */
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- lock_kernel();
switch (cmd) {
case BLKI2OGRSTRAT:
- ret = put_user(dev->rcache, (int __user *)arg);
- break;
+ return put_user(dev->rcache, (int __user *)arg);
case BLKI2OGWSTRAT:
- ret = put_user(dev->wcache, (int __user *)arg);
- break;
+ return put_user(dev->wcache, (int __user *)arg);
case BLKI2OSRSTRAT:
- ret = -EINVAL;
if (arg < 0 || arg > CACHE_SMARTFETCH)
- break;
+ return -EINVAL;
dev->rcache = arg;
- ret = 0;
break;
case BLKI2OSWSTRAT:
- ret = -EINVAL;
if (arg != 0
&& (arg < CACHE_WRITETHROUGH || arg > CACHE_SMARTBACK))
- break;
+ return -EINVAL;
dev->wcache = arg;
- ret = 0;
break;
}
- unlock_kernel();
-
- return ret;
+ return -ENOTTY;
};
/**
@@ -942,7 +931,6 @@ static const struct block_device_operations i2o_block_fops = {
.open = i2o_block_open,
.release = i2o_block_release,
.ioctl = i2o_block_ioctl,
- .compat_ioctl = i2o_block_ioctl,
.getgeo = i2o_block_getgeo,
.media_changed = i2o_block_media_changed
};