From 6b0310fbf087ad6e9e3b8392adca97cd77184084 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Sun, 16 May 2010 02:00:00 -0400 Subject: [PATCH] ext4: don't return to userspace after freezing the fs with a mutex held ext4_freeze() used jbd2_journal_lock_updates() which takes the j_barrier mutex, and then returns to userspace. The kernel does not like this: ================================================ [ BUG: lock held when returning to user space! ] ------------------------------------------------ lvcreate/1075 is leaving the kernel with locks still held! 1 lock held by lvcreate/1075: #0: (&journal->j_barrier){+.+...}, at: [] jbd2_journal_lock_updates+0xe1/0xf0 Use vfs_check_frozen() added to ext4_journal_start_sb() and ext4_force_commit() instead. Addresses-Red-Hat-Bugzilla: #568503 Signed-off-by: Eric Sandeen Signed-off-by: "Theodore Ts'o" --- Reading git-format-patch failed