From 95653ebdc7081ad0c989e971fe4cab9bc8d1f945 Mon Sep 17 00:00:00 2001
From: batt <batt@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Tue, 5 Feb 2008 14:27:32 +0000
Subject: [PATCH] Handle seq wrap.
git-svn-id: https://src.develer.com/svnoss/bertos/trunk@1093 38d2e660-2303-0410-9eaa-f027e97ec537
---
fs/battfs.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/fs/battfs.c b/fs/battfs.c
index 8289e91d..422ce9e6 100644
--- a/fs/battfs.c
+++ b/fs/battfs.c
@@ -418,9 +418,8 @@ bool battfs_init(struct BattFsSuper *disk)
pgcnt_t new_page, old_page;
fill_t old_fill;
- /* Fancy check to handle seq wraparound */
- #define HALF_SEQ (1 << ((sizeof(seq_t) * CPU_BITS_PER_CHAR) - 1))
- if ((hdr.seq - hdr_old.seq) < HALF_SEQ)
+ /* Fancy check to handle seq wraparound (2 bits only) */
+ if (((hdr.seq - hdr_old.seq) & 0x03) < 2)
{
/* Current header is newer than the previuos one */
old_page = disk->page_array[array_pos];
--
2.34.1