From 8a9362eb405e380432e6883cb83830df3b6cdf78 Mon Sep 17 00:00:00 2001 From: Duane Griffin Date: Thu, 17 Apr 2008 10:38:59 -0400 Subject: [PATCH] jbd2: replace potentially false assertion with if block If an error occurs during jbd2 cache initialisation it is possible for the journal_head_cache to be NULL when jbd2_journal_destroy_journal_head_cache is called. Replace the J_ASSERT with an if block to handle the situation correctly. Note that even with this fix things will break badly if jbd2 is statically compiled in and cache initialisation fails. Signed-off-by: Duane Griffin Cc: Signed-off-by: Andrew Morton Signed-off-by: Mingming Cao Signed-off-by: "Theodore Ts'o" --- fs/jbd2/journal.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index eb7eb6c27bcb..2dbf23e82c6f 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -1976,9 +1976,10 @@ static int journal_init_jbd2_journal_head_cache(void) static void jbd2_journal_destroy_jbd2_journal_head_cache(void) { - J_ASSERT(jbd2_journal_head_cache != NULL); - kmem_cache_destroy(jbd2_journal_head_cache); - jbd2_journal_head_cache = NULL; + if (jbd2_journal_head_cache) { + kmem_cache_destroy(jbd2_journal_head_cache); + jbd2_journal_head_cache = NULL; + } } /*