2.6.32-longterm review patch.  If anyone has any objections, please let me know.

------------------

From: Louis Rilling <[email protected]>

commit 61cc74fbb87af6aa551a06a370590c9bc07e29d9 upstream

With CLONE_IO, copy_io() increments both ioc->refcount and ioc->nr_tasks.
However exit_io_context() only decrements ioc->refcount if ioc->nr_tasks
reaches 0.

Always call put_io_context() in exit_io_context().

Signed-off-by: Louis Rilling <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Signed-off-by: Willy Tarreau <[email protected]>
---
 block/blk-ioc.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/block/blk-ioc.c b/block/blk-ioc.c
index d4ed600..dcd0412 100644
--- a/block/blk-ioc.c
+++ b/block/blk-ioc.c
@@ -80,8 +80,8 @@ void exit_io_context(void)
                        ioc->aic->exit(ioc->aic);
                cfq_exit(ioc);
 
-               put_io_context(ioc);
        }
+       put_io_context(ioc);
 }
 
 struct io_context *alloc_io_context(gfp_t gfp_flags, int node)
-- 
1.7.2.1.45.g54fbc



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