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authorArnd Bergmann <arnd@arndb.de>2005-06-23 09:10:15 +0200
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-23 18:45:32 +0200
commitbb93e3a52f8db7210258a1a2134cced0b78a46e1 (patch)
treeb6def4c3fe5624769de64e242bb2007fffea55c8 /fs
parent[PATCH] compat: introduce compat_time_t (diff)
downloadlinux-bb93e3a52f8db7210258a1a2134cced0b78a46e1.tar.xz
linux-bb93e3a52f8db7210258a1a2134cced0b78a46e1.zip
[PATCH] block: add unlocked_ioctl support for block devices
This patch allows block device drivers to convert their ioctl functions to unlocked_ioctl() like character devices and other subsystems. All functions that were called with the BKL held before are still used that way, but I would not be surprised if it could be removed from the ioctl functions in drivers/block/ioctl.c themselves. As a side note, I found that compat_blkdev_ioctl() acquires the BKL as well, which looks like a bug. I have checked that every user of disk->fops->compat_ioctl() in the current git tree gets the BKL itself, so it could easily be removed from compat_blkdev_ioctl(). Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs')
-rw-r--r--fs/block_dev.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index c0cbd1bc1a02..e0df94c37b7e 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -777,8 +777,7 @@ static ssize_t blkdev_file_aio_write(struct kiocb *iocb, const char __user *buf,
return generic_file_aio_write_nolock(iocb, &local_iov, 1, &iocb->ki_pos);
}
-static int block_ioctl(struct inode *inode, struct file *file, unsigned cmd,
- unsigned long arg)
+static long block_ioctl(struct file *file, unsigned cmd, unsigned long arg)
{
return blkdev_ioctl(file->f_mapping->host, file, cmd, arg);
}
@@ -803,7 +802,7 @@ struct file_operations def_blk_fops = {
.aio_write = blkdev_file_aio_write,
.mmap = generic_file_mmap,
.fsync = block_fsync,
- .ioctl = block_ioctl,
+ .unlocked_ioctl = block_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = compat_blkdev_ioctl,
#endif