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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 /include/linux/iocontext.h
parent61cc74fbb87af6aa551a06a370590c9bc07e29d9 (diff)
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 'include/linux/iocontext.h')
-rw-r--r--include/linux/iocontext.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h
index d61b0b8b5cd..a6323599630 100644
--- a/include/linux/iocontext.h
+++ b/include/linux/iocontext.h
@@ -98,14 +98,15 @@ static inline struct io_context *ioc_task_link(struct io_context *ioc)
return NULL;
}
+struct task_struct;
#ifdef CONFIG_BLOCK
int put_io_context(struct io_context *ioc);
-void exit_io_context(void);
+void exit_io_context(struct task_struct *task);
struct io_context *get_io_context(gfp_t gfp_flags, int node);
struct io_context *alloc_io_context(gfp_t gfp_flags, int node);
void copy_io_context(struct io_context **pdst, struct io_context **psrc);
#else
-static inline void exit_io_context(void)
+static inline void exit_io_context(struct task_struct *task)
{
}