From 6d205f120547043de663315698dcf5f0eaa31b5c Mon Sep 17 00:00:00 2001 From: Vladimir Saveliev Date: Wed, 11 Apr 2007 23:28:44 -0700 Subject: [PATCH] reiserfs: fix key decrementing This patch fixes a bug in function decrementing a key of stat data item. Offset of reiserfs keys are compared as signed values. To set key offset to maximal possible value maximal signed value has to be used. This bug is responsible for severe reiserfs filesystem corruption which shows itself as warning vs-13060. reiserfsck fixes this corruption by filesystem tree rebuilding. Signed-off-by: Vladimir Saveliev Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/reiserfs/item_ops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/reiserfs') diff --git a/fs/reiserfs/item_ops.c b/fs/reiserfs/item_ops.c index b9b423b22a8b..9475557ab499 100644 --- a/fs/reiserfs/item_ops.c +++ b/fs/reiserfs/item_ops.c @@ -23,7 +23,7 @@ static void sd_decrement_key(struct cpu_key *key) { key->on_disk_key.k_objectid--; set_cpu_key_k_type(key, TYPE_ANY); - set_cpu_key_k_offset(key, (loff_t) (-1)); + set_cpu_key_k_offset(key, (loff_t)(~0ULL >> 1)); } static int sd_is_left_mergeable(struct reiserfs_key *key, unsigned long bsize) -- cgit v1.2.2