linux-kernel - [PATCH v2] ubifs: compress lines for immediate return

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1473058466-10831-1-git-send-email-hs@denx.de>
Date:   Mon,  5 Sep 2016 08:54:26 +0200
From:   Heiko Schocher <hs@...x.de>
To:     linux-mtd@...ts.infradead.org
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Heiko Schocher <hs@...x.de>,
        Artem Bityutskiy <dedekind1@...il.com>,
        Richard Weinberger <richard@....at>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2] ubifs: compress lines for immediate return

From: Masahiro Yamada <yamada.masahiro@...ionext.com>

Cleanup the following code construct:
ret = expression;
if (ret)
        return ret;
return 0;

into a simple form:
return expression;

From: Masahiro Yamada <yamada.masahiro@...ionext.com>
posted on the U-Boot mailinglist.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
Signed-off-by: Heiko Schocher <hs@...x.de>
---

Changes in v2:
- add comment from Richard Weinberger:
  rephrase commit message
  add Masahiros "Signed-off-by" tag.

 fs/ubifs/budget.c     | 7 ++-----
 fs/ubifs/gc.c         | 6 ++----
 fs/ubifs/lpt_commit.c | 5 +----
 3 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c
index 11a11b3..48d6851 100644
--- a/fs/ubifs/budget.c
+++ b/fs/ubifs/budget.c
@@ -77,7 +77,7 @@ static void shrink_liability(struct ubifs_info *c, int nr_to_write)
  */
 static int run_gc(struct ubifs_info *c)
 {
-	int err, lnum;
+	int lnum;
 
 	/* Make some free space by garbage-collecting dirty space */
 	down_read(&c->commit_sem);
@@ -88,10 +88,7 @@ static int run_gc(struct ubifs_info *c)
 
 	/* GC freed one LEB, return it to lprops */
 	dbg_budg("GC freed LEB %d", lnum);
-	err = ubifs_return_leb(c, lnum);
-	if (err)
-		return err;
-	return 0;
+	return = ubifs_return_leb(c, lnum);
 }
 
 /**
diff --git a/fs/ubifs/gc.c b/fs/ubifs/gc.c
index 821b348..88cd61d 100644
--- a/fs/ubifs/gc.c
+++ b/fs/ubifs/gc.c
@@ -297,10 +297,8 @@ static int sort_nodes(struct ubifs_info *c, struct ubifs_scan_leb *sleb,
 	err = dbg_check_data_nodes_order(c, &sleb->nodes);
 	if (err)
 		return err;
-	err = dbg_check_nondata_nodes_order(c, nondata);
-	if (err)
-		return err;
-	return 0;
+
+	return dbg_check_nondata_nodes_order(c, nondata);
 }
 
 /**
diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index ce89bdc..79a8e96 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -313,10 +313,7 @@ static int layout_cnodes(struct ubifs_info *c)
 	alen = ALIGN(offs, c->min_io_size);
 	upd_ltab(c, lnum, c->leb_size - alen, alen - offs);
 	dbg_chk_lpt_sz(c, 4, alen - offs);
-	err = dbg_chk_lpt_sz(c, 3, alen);
-	if (err)
-		return err;
-	return 0;
+	return dbg_chk_lpt_sz(c, 3, alen);
 
 no_space:
 	ubifs_err(c, "LPT out of space at LEB %d:%d needing %d, done_ltab %d, done_lsave %d",
-- 
2.5.5