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Reread node if its crc is wrong

PATCH New Gilles Casse 1 participant 1 message Aug 25, 2009

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Memory technology devices (MTD) Journalling flash file system V2 (JFFS2)
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Gilles Casse

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PATCH 1/1 Reread node if its crc is wrong

Patch attached.
Thank you,
Gilles

From 2715a4328f359dab19285e42b4cd2f72f174da3b Mon Sep 17 00:00:00 2001
From: Gilles Casse <[email protected]>
Date: Mon, 24 Aug 2009 15:44:44 +0200
Subject: [PATCH] Reread node if its crc is wrong

Helpful if unexpected errors occured during flash read.

Signed-off-by Gilles Casse <[email protected]>
---
 fs/jffs2/nodelist.h |    4 +++
 fs/jffs2/read.c     |   75 ++++++++++++++++++++++++++++++++-------------------
 2 files changed, 51 insertions(+), 28 deletions(-)
fs/jffs2/nodelist.h +4 -0
index 507ed6e..9b264f6 100644
@@ -301,6 +301,10 @@ static inline int jffs2_blocks_use_vmalloc(struct jffs2_sb_info *c)
 #define ALLOC_GC	2	/* Space requested for GC. Give it or die */
 #define ALLOC_NORETRY	3	/* For jffs2_write_dnode: On failure, return -EAGAIN instead of retrying */
 
+#define MAX_FLASH_READ	4	/* Number of calls to jffs2_flash_read.
+							   Helpful if corrupted data (crc) have been read */
+
+
 /* How much dirty space before it goes on the very_dirty_list */
 #define VERYDIRTY(c, size) ((size) >= ((c)->sector_size / 2))
fs/jffs2/read.c +47 -28

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