commit a561be7100cd610bd2e082f3211c1dfb45835817
author Al Viro <viro@zeniv.linux.org.uk> Wed Nov 23 11:57:51 2011 -0500
committer Al Viro <viro@zeniv.linux.org.uk> Tue Jan 03 22:52:35 2012 -0500
tree a1016a11df967be6f289a4e8ae29597ba39df17e
parent f47ec3f28354795f000c14bf18ed967ec81a3ec3

switch a bunch of places to mnt_want_write_file()

it's both faster (in case when file has been opened for write) and cleaner.

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

fs/btrfs/ioctl.c

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index c04f02c..20dd8f3 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -201,7 +201,7 @@
 		}
 	}
 
-	ret = mnt_want_write(file->f_path.mnt);
+	ret = mnt_want_write_file(file);
 	if (ret)
 		goto out_unlock;
 
@@ -1855,7 +1855,7 @@
 		goto out;
 	}
 
-	err = mnt_want_write(file->f_path.mnt);
+	err = mnt_want_write_file(file);
 	if (err)
 		goto out;
 
@@ -1987,7 +1987,7 @@
 	if (btrfs_root_readonly(root))
 		return -EROFS;
 
-	ret = mnt_want_write(file->f_path.mnt);
+	ret = mnt_want_write_file(file);
 	if (ret)
 		return ret;
 
@@ -2195,7 +2195,7 @@
 	if (btrfs_root_readonly(root))
 		return -EROFS;
 
-	ret = mnt_want_write(file->f_path.mnt);
+	ret = mnt_want_write_file(file);
 	if (ret)
 		return ret;
 
@@ -2549,7 +2549,7 @@
 	if (btrfs_root_readonly(root))
 		goto out;
 
-	ret = mnt_want_write(file->f_path.mnt);
+	ret = mnt_want_write_file(file);
 	if (ret)
 		goto out;