From: Jan Kara <jack@suse.cz>
Date: Fri, 24 Jun 2005 05:01:37 +0000 (-0700)
Subject: [PATCH] Make reiserfs BUG on too big transaction
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bdd5b29c6bc835dab71148afd5952f9cd278eef1;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] Make reiserfs BUG on too big transaction

Make reiserfs BUG() when somebody tries to start a larger transaction than
it's allowed (currently the code just silently deadlocks).

Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: Chris Mason <mason@suse.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 3072cfdee959..7b87707acc36 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -2631,6 +2631,8 @@ static int do_journal_begin_r(struct reiserfs_transaction_handle *th, struct sup
   int retval;
 
   reiserfs_check_lock_depth(p_s_sb, "journal_begin") ;
+  if (nblocks > journal->j_trans_max)
+	BUG();
 
   PROC_INFO_INC( p_s_sb, journal.journal_being );
   /* set here for journal_join */