This patch exports alloc_io_context() function. For performance reasons SCST queues commands using a pool of IO threads. It is considerably better for performance (>30% increase on sequential reads) if threads in a pool have the same IO context. Since SCST can be built as a module, it needs alloc_io_context() function exported. Signed-off-by: Vladislav Bolkhovitin <vst@xxxxxxxx> --- block/blk-ioc.c | 1 + 1 file changed, 1 insertion(+) diff -upkr linux-2.6.27.2/block/blk-ioc.c linux-2.6.27.2/block/blk-ioc.c --- linux-2.6.27.2/block/blk-ioc.c 2008-10-10 02:13:53.000000000 +0400 +++ linux-2.6.27.2/block/blk-ioc.c 2008-11-25 21:27:01.000000000 +0300 @@ -105,6 +105,7 @@ struct io_context *alloc_io_context(gfp_ return ret; } +EXPORT_SYMBOL(alloc_io_context); /* * If the current task has no IO context then create one and initialise it. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
