nilfs2: use unlocked_ioctl
Pekka Enberg suggested converting ->ioctl operations to use
->unlocked_ioctl to avoid BKL.
The conversion was verified to be safe, so I will take it on this
occasion.
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c
index 393316c..54100ac 100644
--- a/fs/nilfs2/dir.c
+++ b/fs/nilfs2/dir.c
@@ -702,7 +702,7 @@
.llseek = generic_file_llseek,
.read = generic_read_dir,
.readdir = nilfs_readdir,
- .ioctl = nilfs_ioctl,
+ .unlocked_ioctl = nilfs_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = nilfs_ioctl,
#endif /* CONFIG_COMPAT */
diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c
index a2bd962..6bd84a0 100644
--- a/fs/nilfs2/file.c
+++ b/fs/nilfs2/file.c
@@ -140,7 +140,7 @@
.write = do_sync_write,
.aio_read = generic_file_aio_read,
.aio_write = generic_file_aio_write,
- .ioctl = nilfs_ioctl,
+ .unlocked_ioctl = nilfs_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = nilfs_ioctl,
#endif /* CONFIG_COMPAT */
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index 33aff88..cfb2789 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -600,9 +600,9 @@
return 0;
}
-int nilfs_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
+long nilfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
+ struct inode *inode = filp->f_dentry->d_inode;
void __user *argp = (void * __user *)arg;
switch (cmd) {
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h
index f767644..d08fb1c 100644
--- a/fs/nilfs2/nilfs.h
+++ b/fs/nilfs2/nilfs.h
@@ -242,7 +242,7 @@
extern int nilfs_sync_file(struct file *, struct dentry *, int);
/* ioctl.c */
-int nilfs_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
+long nilfs_ioctl(struct file *, unsigned int, unsigned long);
int nilfs_ioctl_prepare_clean_segments(struct the_nilfs *, void __user *);
/* inode.c */