From 34a3d1e83708702ac6cb872215e68cd07dae298b Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Thu, 11 Oct 2007 22:11:12 +0200 Subject: lockdep: annotate journal_start() On Fri, 2007-07-13 at 02:05 -0700, Andrew Morton wrote: > Except lockdep doesn't know about journal_start(), which has ranking > requirements similar to a semaphore. Signed-off-by: Peter Zijlstra Signed-off-by: Ingo Molnar --- fs/jbd/transaction.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'fs') diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c index 772b6531a2a2..8df5bac0b7a5 100644 --- a/fs/jbd/transaction.c +++ b/fs/jbd/transaction.c @@ -233,6 +233,8 @@ out: return ret; } +static struct lock_class_key jbd_handle_key; + /* Allocate a new handle. This should probably be in a slab... */ static handle_t *new_handle(int nblocks) { @@ -243,6 +245,8 @@ static handle_t *new_handle(int nblocks) handle->h_buffer_credits = nblocks; handle->h_ref = 1; + lockdep_init_map(&handle->h_lockdep_map, "jbd_handle", &jbd_handle_key, 0); + return handle; } @@ -286,6 +290,9 @@ handle_t *journal_start(journal_t *journal, int nblocks) current->journal_info = NULL; handle = ERR_PTR(err); } + + lock_acquire(&handle->h_lockdep_map, 0, 0, 0, 2, _THIS_IP_); + return handle; } @@ -1411,6 +1418,8 @@ int journal_stop(handle_t *handle) spin_unlock(&journal->j_state_lock); } + lock_release(&handle->h_lockdep_map, 1, _THIS_IP_); + jbd_free_handle(handle); return err; } -- cgit v1.2.3