Commit 6d205f12 authored Apr 11, 2007 by Vladimir Saveliev Committed by Linus Torvalds Apr 12, 2007

[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 <vs@namesys.com>
Cc: <reiserfs-dev@namesys.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 505fa2c4

fs/reiserfs/item_ops.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)

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