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authorLouis Rilling <louis.rilling@kerlabs.com>2009-12-04 14:52:42 +0100
committerJens Axboe <jens.axboe@oracle.com>2009-12-04 16:36:18 +0100
commitb69f2292063d2caf37ca9aec7d63ded203701bf3 (patch)
treebe4acb81ea4ab7014047808ec2b2c908e8334f55 /kernel/fork.c
parent61cc74fbb87af6aa551a06a370590c9bc07e29d9 (diff)
downloadop-kernel-dev-b69f2292063d2caf37ca9aec7d63ded203701bf3.zip
op-kernel-dev-b69f2292063d2caf37ca9aec7d63ded203701bf3.tar.gz
block: Fix io_context leak after failure of clone with CLONE_IO
With CLONE_IO, parent's io_context->nr_tasks is incremented, but never decremented whenever copy_process() fails afterwards, which prevents exit_io_context() from calling IO schedulers exit functions. Give a task_struct to exit_io_context(), and call exit_io_context() instead of put_io_context() in copy_process() cleanup path. Signed-off-by: Louis Rilling <louis.rilling@kerlabs.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'kernel/fork.c')
-rw-r--r--kernel/fork.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index 166b8c4..6073534 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1310,7 +1310,8 @@ bad_fork_free_pid:
if (pid != &init_struct_pid)
free_pid(pid);
bad_fork_cleanup_io:
- put_io_context(p->io_context);
+ if (p->io_context)
+ exit_io_context(p);
bad_fork_cleanup_namespaces:
exit_task_namespaces(p);
bad_fork_cleanup_mm:
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