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, 2 deletions

diff --git a/fs/udf/symlink.c b/fs/udf/symlink.c
index d55989c871d..6ec99221e50 100644
--- a/fs/udf/symlink.c
+++ b/fs/udf/symlink.c
@@ -79,10 +79,12 @@ static int udf_symlink_filler(struct file *file, struct page *page)
         char *symlink;
         int err = -EIO;
         char *p = kmap(page);
+        struct udf_inode_info *iinfo;
 
         lock_kernel();
-        if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
-                symlink = UDF_I(inode)->i_ext.i_data + UDF_I(inode)->i_lenEAttr;
+        iinfo = UDF_I(inode);
+        if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+                symlink = iinfo->i_ext.i_data + iinfo->i_lenEAttr;
         } else {
                 bh = sb_bread(inode->i_sb, udf_block_map(inode, 0));