| Date | Mon, 29 May 2006 23:25:59 +0200 | From | Ingo Molnar <> | Subject | [patch 35/61] lock validator: special locking: direct-IO |
| |
From: Ingo Molnar <mingo@elte.hu>
teach special (rwsem-in-irq) locking code to the lock validator. Has no effect on non-lockdep kernels.
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> --- --- fs/direct-io.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
Index: linux/fs/direct-io.c =================================================================== --- linux.orig/fs/direct-io.c +++ linux/fs/direct-io.c @@ -220,7 +220,8 @@ static void dio_complete(struct dio *dio if (dio->end_io && dio->result) dio->end_io(dio->iocb, offset, bytes, dio->map_bh.b_private); if (dio->lock_type == DIO_LOCKING) - up_read(&dio->inode->i_alloc_sem); + /* lockdep: non-owner release */ + up_read_non_owner(&dio->inode->i_alloc_sem); } /* @@ -1261,7 +1262,8 @@ __blockdev_direct_IO(int rw, struct kioc } if (dio_lock_type == DIO_LOCKING) - down_read(&inode->i_alloc_sem); + /* lockdep: not the owner will release it */ + down_read_non_owner(&inode->i_alloc_sem); } /* - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|