From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 27 Aug 2012 01:20:24 +0000 (-0400)
Subject: switch btrfs_ioctl_snap_create_transid() to fget_light()
X-Git-Tag: next-20120928~93^2~28
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=ecd188159efa112770d5f8a4a62f8d3586784f48;p=karo-tx-linux.git

switch btrfs_ioctl_snap_create_transid() to fget_light()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 9df50fa8a078..3c88abb0e265 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1422,7 +1422,8 @@ static noinline int btrfs_ioctl_snap_create_transid(struct file *file,
 				     NULL, transid, readonly, inherit);
 	} else {
 		struct inode *src_inode;
-		src_file = fget(fd);
+		int fput_needed;
+		src_file = fget_light(fd, &fput_needed);
 		if (!src_file) {
 			ret = -EINVAL;
 			goto out_drop_write;
@@ -1433,13 +1434,12 @@ static noinline int btrfs_ioctl_snap_create_transid(struct file *file,
 			printk(KERN_INFO "btrfs: Snapshot src from "
 			       "another FS\n");
 			ret = -EINVAL;
-			fput(src_file);
-			goto out_drop_write;
+		} else {
+			ret = btrfs_mksubvol(&file->f_path, name, namelen,
+					     BTRFS_I(src_inode)->root,
+					     transid, readonly, inherit);
 		}
-		ret = btrfs_mksubvol(&file->f_path, name, namelen,
-				     BTRFS_I(src_inode)->root,
-				     transid, readonly, inherit);
-		fput(src_file);
+		fput_light(src_file, fput_needed);
 	}
 out_drop_write:
 	mnt_drop_write_file(file);