linux-kernel - [PATCH 1/3] f2fs: check nid == 0 in add_free

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: <1366887697-24627-1-git-send-email-jaegeuk.kim@samsung.com>
Date:	Thu, 25 Apr 2013 20:01:35 +0900
From:	Jaegeuk Kim <jaegeuk.kim@...sung.com>
To:	unlisted-recipients:; (no To-header on input)
Cc:	Jaegeuk Kim <jaegeuk.kim@...sung.com>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net
Subject: [PATCH 1/3] f2fs: check nid == 0 in add_free_nid

It is more obvious that add_free_nid checks whether the free nid is zero or not.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@...sung.com>
---
 fs/f2fs/node.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index a0aa044..c8f48d4 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1245,6 +1245,10 @@ static int add_free_nid(struct f2fs_nm_info *nm_i, nid_t nid)
 
 	if (nm_i->fcnt > 2 * MAX_FREE_NIDS)
 		return 0;
+
+	/* 0 nid should not be used */
+	if (nid == 0)
+		return 0;
 retry:
 	i = kmem_cache_alloc(free_nid_slab, GFP_NOFS);
 	if (!i) {
@@ -1286,10 +1290,6 @@ static int scan_nat_page(struct f2fs_nm_info *nm_i,
 	int fcnt = 0;
 	int i;
 
-	/* 0 nid should not be used */
-	if (start_nid == 0)
-		++start_nid;
-
 	i = start_nid % NAT_ENTRY_PER_BLOCK;
 
 	for (; i < NAT_ENTRY_PER_BLOCK; i++, start_nid++) {
-- 
1.8.1.3.566.gaa39828

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/