udf: cache struct udf_inode_info

cache UDF_I(struct inode *) return values when there are
at least 2 uses in one function

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Acked-by: Jan Kara <jack@suse.cz>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/fs/udf/directory.c b/fs/udf/directory.c
index 949a5930f6d4..d8ceb44f4f22 100644
--- a/fs/udf/directory.c
+++ b/fs/udf/directory.c
@@ -81,12 +81,13 @@ struct fileIdentDesc *udf_fileident_read(struct inode *dir, loff_t *nf_pos,
         struct fileIdentDesc *fi;
         int i, num, block;
         struct buffer_head *tmp, *bha[16];
+        struct udf_inode_info *iinfo = UDF_I(dir);
 
         fibh->soffset = fibh->eoffset;
 
-        if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
-                fi = udf_get_fileident(UDF_I(dir)->i_ext.i_data -
-                                       (UDF_I(dir)->i_efe ?
+        if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+                fi = udf_get_fileident(iinfo->i_ext.i_data -
+                                       (iinfo->i_efe ?
                                         sizeof(struct extendedFileEntry) :
                                         sizeof(struct fileEntry)),
                                        dir->i_sb->s_blocksize,