ext4: cleanup in ext4_discard_allocated_blocks()

commit 400db9d30146dc062aaba97a6301b425eb6015bc upstream.

remove 'len' variable in ext4_discard_allocated_blocks() because it is
useless.

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 7168eeb..3939d1a 100644 (file)
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -3128,13 +3128,9 @@ static void ext4_mb_collect_stats(struct ext4_allocation_context *ac)
 static void ext4_discard_allocated_blocks(struct ext4_allocation_context *ac)
 {
        struct ext4_prealloc_space *pa = ac->ac_pa;
-       int len;
-
-       if (pa && pa->pa_type == MB_INODE_PA) {
-               len = ac->ac_b_ex.fe_len;
-               pa->pa_free += len;
-       }
 
+       if (pa && pa->pa_type == MB_INODE_PA)
+               pa->pa_free += ac->ac_b_ex.fe_len;
 }
 
 /*