udf: Do not read inode before writing it

We needlessly read inode in udf_update_inode just before zeroing out the
contents of the buffer. Fix it.

Signed-off-by: Jan Kara <jack@suse.cz>

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index a792a88..a00602b 100644 (file)
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1408,9 +1408,8 @@ static int udf_update_inode(struct inode *inode, int do_sync)
        unsigned char blocksize_bits = inode->i_sb->s_blocksize_bits;
        struct udf_inode_info *iinfo = UDF_I(inode);
 
-       bh = udf_tread(inode->i_sb,
-                       udf_get_lb_pblock(inode->i_sb,
-                                         &iinfo->i_location, 0));
+       bh = udf_tgetblk(inode->i_sb,
+                       udf_get_lb_pblock(inode->i_sb, &iinfo->i_location, 0));
        if (!bh) {
                udf_debug("getblk failure\n");
                return -ENOMEM;
@@ -1602,6 +1601,7 @@ static int udf_update_inode(struct inode *inode, int do_sync)
        fe->descTag.tagChecksum = udf_tag_checksum(&fe->descTag);
 
 out:
+       set_buffer_uptodate(bh);
        unlock_buffer(bh);
 
        /* write the data blocks */