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| author |   Tejun Heo <tj@kernel.org> | 2012-03-05 13:15:24 -0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2012-03-06 21:27:24 +0100 |
| commit | 24acfc34fba0b4f62ef9d5c2616eb0faa802b606 (patch) | |
| tree | 42d07b0e4ad922b24853fe542cb9ab543aa8174c /block/blk-core.c | |
| parent | block: restructure get_request() (diff) | |
| download | linux-dev-24acfc34fba0b4f62ef9d5c2616eb0faa802b606.tar.xz linux-dev-24acfc34fba0b4f62ef9d5c2616eb0faa802b606.zip | |
block: interface update for ioc/icq creation functions
Make the following interface updates to prepare for future ioc related
changes.
* create_io_context() returning ioc only works for %current because it
doesn't increment ref on the ioc. Drop @task parameter from it and
always assume %current.
* Make create_io_context_slowpath() return 0 or -errno and rename it
to create_task_io_context().
* Make ioc_create_icq() take @ioc as parameter instead of assuming
that of %current. The caller, get_request(), is updated to create
ioc explicitly and then pass it into ioc_create_icq().
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-core.c')
| -rw-r--r-- | block/blk-core.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 792a384a8e35..b2d0fcd8f87f 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -855,7 +855,7 @@ retry: */ if (!ioc && !retried) { spin_unlock_irq(q->queue_lock); - create_io_context(current, gfp_mask, q->node); + create_io_context(gfp_mask, q->node); spin_lock_irq(q->queue_lock); retried = true; goto retry; @@ -919,7 +919,9 @@ retry: /* create icq if missing */ if ((rw_flags & REQ_ELVPRIV) && unlikely(et->icq_cache && !icq)) { - icq = ioc_create_icq(q, gfp_mask); + ioc = create_io_context(gfp_mask, q->node); + if (ioc) + icq = ioc_create_icq(ioc, q, gfp_mask); if (!icq) goto fail_alloc; } @@ -1005,7 +1007,7 @@ static struct request *get_request_wait(struct request_queue *q, int rw_flags, * up to a big batch of them for a small period time. * See ioc_batching, ioc_set_batching */ - create_io_context(current, GFP_NOIO, q->node); + create_io_context(GFP_NOIO, q->node); ioc_set_batching(q, current->io_context); spin_lock_irq(q->queue_lock); |