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| author | Eric Sandeen <sandeen@redhat.com> | 2010-05-16 02:00:00 -0400 |
|---|---|---|
| committer | Paul Gortmaker <paul.gortmaker@windriver.com> | 2011-01-06 18:07:34 -0500 |
| commit | 924a7b8465438c478074ce82321f3d44ef2ba67b (patch) | |
| tree | 86cc632e770f3e4893887f57a4accdb91d139bac /fs/udf/truncate.c | |
| parent | 8b2b0f0ea18f2f696fc18eaff89ac3ab0e512150 (diff) | |
ext4: don't return to userspace after freezing the fs with a mutex held
commit 6b0310fbf087ad6e9e3b8392adca97cd77184084 upstream.
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: [<ffffffff811c6214>]
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 <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'fs/udf/truncate.c')
0 files changed, 0 insertions, 0 deletions