udf: fix memory leak while allocating blocks during write

Need to brelse the buffer_head stored in cur_epos and next_epos.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Ashish Sangwan <a.sangwan@samsung.com>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index df88b957ccf..2b7759371ff 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -765,6 +765,8 @@ static sector_t inode_getblk(struct inode *inode, sector_t block,
                                 goal, err);
                 if (!newblocknum) {
                         brelse(prev_epos.bh);
+                        brelse(cur_epos.bh);
+                        brelse(next_epos.bh);
                         *err = -ENOSPC;
                         return 0;
                 }
@@ -795,6 +797,8 @@ static sector_t inode_getblk(struct inode *inode, sector_t block,
         udf_update_extents(inode, laarr, startnum, endnum, &prev_epos);
 
         brelse(prev_epos.bh);
+        brelse(cur_epos.bh);
+        brelse(next_epos.bh);
 
         newblock = udf_get_pblock(inode->i_sb, newblocknum,
                                 iinfo->i_location.partitionReferenceNum, 0);