On Wed, Dec 10 2008, Vladislav Bolkhovitin wrote: > 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); Why is this needed, can't you just use CLONE_IO? -- Jens Axboe -- 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
