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authorVivek Goyal <vgoyal@redhat.com>2009-12-04 10:36:42 -0500
committerJens Axboe <jens.axboe@oracle.com>2009-12-04 16:38:14 +0100
commit3e2520668970aab5a764044a298e987aafc1f63d (patch)
tree088ebf7c4576d597774c8c332bab590dc3a472d6 /block/Kconfig.iosched
parent9d6a986c0b276085f7944cd8ad65f4f82aff7536 (diff)
downloadkernel-3e2520668970aab5a764044a298e987aafc1f63d.tar.gz
blkio: Implement dynamic io controlling policy registration
o One of the goals of block IO controller is that it should be able to support mulitple io control policies, some of which be operational at higher level in storage hierarchy. o To begin with, we had one io controlling policy implemented by CFQ, and I hard coded the CFQ functions called by blkio. This created issues when CFQ is compiled as module. o This patch implements a basic dynamic io controlling policy registration functionality in blkio. This is similar to elevator functionality where ioschedulers register the functions dynamically. o Now in future, when more IO controlling policies are implemented, these can dynakically register with block IO controller. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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