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jbd2: add lockdep support

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Ported from similar patch for the jbd layer.

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Mingming Cao 2008-01-28 23:58:27 -05:00 committed by Theodore Ts'o
parent b939e3766e
commit 7b7510662f
2 changed files with 15 additions and 0 deletions
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11
fs/jbd2/transaction.c
View file

@ -241,6 +241,8 @@ static int start_this_handle(journal_t *journal, handle_t *handle)
return ret;
}
static struct lock_class_key jbd2_handle_key;
/* Allocate a new handle. This should probably be in a slab... */
static handle_t *new_handle(int nblocks)
{
@ -251,6 +253,9 @@ static handle_t *new_handle(int nblocks)
handle->h_buffer_credits = nblocks;
handle->h_ref = 1;
lockdep_init_map(&handle->h_lockdep_map, "jbd2_handle",
&jbd2_handle_key, 0);
return handle;
}
@ -293,7 +298,11 @@ handle_t *jbd2_journal_start(journal_t *journal, int nblocks)
jbd2_free_handle(handle);
current->journal_info = NULL;
handle = ERR_PTR(err);
goto out;
}
lock_acquire(&handle->h_lockdep_map, 0, 0, 0, 2, _THIS_IP_);
out:
return handle;
}
@ -1419,6 +1428,8 @@ int jbd2_journal_stop(handle_t *handle)
spin_unlock(&journal->j_state_lock);
}
lock_release(&handle->h_lockdep_map, 1, _THIS_IP_);
jbd2_free_handle(handle);
return err;
}

4
include/linux/jbd2.h
View file

@ -418,6 +418,10 @@ struct handle_s
unsigned int h_sync: 1; /* sync-on-close */
unsigned int h_jdata: 1; /* force data journaling */
unsigned int h_aborted: 1; /* fatal error on handle */
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map h_lockdep_map;
#endif
};