[PATCH 12/21] ext4: remove unnecessary check in ext4_mb_new_blocks

From: Kemeng Shi
Date: Thu Feb 09 2023 - 06:57:59 EST


1. remove unnecessary ac check:
We always go to out tag before ac is successfully allocated, then we can
move out tag after free of ac and remove NULL check of ac.

2. remove unnecessary *errp check:
We always go to errout tag if *errp is non-zero, then we can move errout
tag into error handle if *errp is non-zero.

Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
---
fs/ext4/mballoc.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 74da24c9bf14..bdabe0d81d4a 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -5641,16 +5641,15 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle,
*errp = -ENOSPC;
}

-errout:
if (*errp) {
+errout:
ac->ac_b_ex.fe_len = 0;
ar->len = 0;
ext4_mb_show_ac(ac);
}
ext4_mb_release_context(ac);
+ kmem_cache_free(ext4_ac_cachep, ac);
out:
- if (ac)
- kmem_cache_free(ext4_ac_cachep, ac);
if (inquota && ar->len < inquota)
dquot_free_block(ar->inode, EXT4_C2B(sbi, inquota - ar->len));
if (!ar->len) {
--
2.30.0