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acbfc9a0d2
- Make BLOCKIO io_contex be per-(device,session) - Cleanups git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@710 d57e44dd-8a1f-0410-8b47-8ef2f437770f
62 lines
1.9 KiB
Diff
62 lines
1.9 KiB
Diff
diff -upkr linux-2.6.27.2/block/blk-ioc.c linux-2.6.27.2/block/blk-ioc.c
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--- linux-2.6.27.2/block/blk-ioc.c 2008-10-10 02:13:53.000000000 +0400
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+++ linux-2.6.27.2/block/blk-ioc.c 2009-03-23 21:32:37.000000000 +0300
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@@ -65,6 +65,21 @@ static void cfq_exit(struct io_context *
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rcu_read_unlock();
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}
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+void __exit_io_context(struct io_context *ioc)
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+{
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+ if (ioc == NULL)
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+ return;
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+
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+ if (atomic_dec_and_test(&ioc->nr_tasks)) {
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+ if (ioc->aic && ioc->aic->exit)
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+ ioc->aic->exit(ioc->aic);
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+ cfq_exit(ioc);
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+
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+ put_io_context(ioc);
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+ }
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+}
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+EXPORT_SYMBOL(__exit_io_context);
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+
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/* Called by the exitting task */
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void exit_io_context(void)
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{
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@@ -75,13 +90,7 @@ void exit_io_context(void)
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current->io_context = NULL;
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task_unlock(current);
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- if (atomic_dec_and_test(&ioc->nr_tasks)) {
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- if (ioc->aic && ioc->aic->exit)
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- ioc->aic->exit(ioc->aic);
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- cfq_exit(ioc);
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-
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- put_io_context(ioc);
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- }
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+ __exit_io_context(ioc);
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}
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struct io_context *alloc_io_context(gfp_t gfp_flags, int node)
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@@ -105,6 +114,7 @@ struct io_context *alloc_io_context(gfp_
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return ret;
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}
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+EXPORT_SYMBOL(alloc_io_context);
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/*
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* If the current task has no IO context then create one and initialise it.
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diff -upkr linux-2.6.27.2/include/linux/iocontext.h linux-2.6.27.2/include/linux/iocontext.h
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--- linux-2.6.27.2/include/linux/iocontext.h 2008-10-10 02:13:53.000000000 +0400
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+++ linux-2.6.27.2/include/linux/iocontext.h 2009-03-23 21:32:37.000000000 +0300
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@@ -103,7 +103,9 @@ static inline struct io_context *ioc_tas
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int put_io_context(struct io_context *ioc);
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void exit_io_context(void);
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struct io_context *get_io_context(gfp_t gfp_flags, int node);
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+#define SCST_IO_CONTEXT
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struct io_context *alloc_io_context(gfp_t gfp_flags, int node);
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+void __exit_io_context(struct io_context *ioc);
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void copy_io_context(struct io_context **pdst, struct io_context **psrc);
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#else
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static inline void exit_io_context(void)
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