X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Focfs2%2Fioctl.c;h=7b142f0ce995bd07a5116567a0b2b56e65b8dd1b;hb=f5c8f7dae75e1e6bb3200fc61302e4d5e2df3dc2;hp=5177fba5162b55616c77d8a1a2db7b5c28842297;hpb=69e4d4c3e1cb23fce81deeae08b502d27bad6993;p=linux-2.6

diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index 5177fba516..7b142f0ce9 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -7,6 +7,7 @@
 
 #include <linux/fs.h>
 #include <linux/mount.h>
+#include <linux/smp_lock.h>
 
 #define MLOG_MASK_PREFIX ML_INODE
 #include <cluster/masklog.h>
@@ -59,10 +60,6 @@ static int ocfs2_set_inode_attr(struct inode *inode, unsigned flags,
 		goto bail;
 	}
 
-	status = -EROFS;
-	if (IS_RDONLY(inode))
-		goto bail_unlock;
-
 	status = -EACCES;
 	if (!is_owner_or_cap(inode))
 		goto bail_unlock;
@@ -112,9 +109,9 @@ bail:
 	return status;
 }
 
-int ocfs2_ioctl(struct inode * inode, struct file * filp,
-	unsigned int cmd, unsigned long arg)
+long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
+	struct inode *inode = filp->f_path.dentry->d_inode;
 	unsigned int flags;
 	int new_clusters;
 	int status;
@@ -133,8 +130,13 @@ int ocfs2_ioctl(struct inode * inode, struct file * filp,
 		if (get_user(flags, (int __user *) arg))
 			return -EFAULT;
 
-		return ocfs2_set_inode_attr(inode, flags,
+		status = mnt_want_write(filp->f_path.mnt);
+		if (status)
+			return status;
+		status = ocfs2_set_inode_attr(inode, flags,
 			OCFS2_FL_MODIFIABLE);
+		mnt_drop_write(filp->f_path.mnt);
+		return status;
 	case OCFS2_IOC_RESVSP:
 	case OCFS2_IOC_RESVSP64:
 	case OCFS2_IOC_UNRESVSP:
@@ -168,9 +170,6 @@ int ocfs2_ioctl(struct inode * inode, struct file * filp,
 #ifdef CONFIG_COMPAT
 long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
 {
-	struct inode *inode = file->f_path.dentry->d_inode;
-	int ret;
-
 	switch (cmd) {
 	case OCFS2_IOC32_GETFLAGS:
 		cmd = OCFS2_IOC_GETFLAGS;
@@ -190,9 +189,6 @@ long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
 		return -ENOIOCTLCMD;
 	}
 
-	lock_kernel();
-	ret = ocfs2_ioctl(inode, file, cmd, arg);
-	unlock_kernel();
-	return ret;
+	return ocfs2_ioctl(file, cmd, arg);
 }
 #endif