diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/zen-iosched.c | 40 |
1 files changed, 25 insertions, 15 deletions
diff --git a/block/zen-iosched.c b/block/zen-iosched.c index af2537bfd..24a384db5 100644 --- a/block/zen-iosched.c +++ b/block/zen-iosched.c @@ -3,7 +3,8 @@ * Primarily based on Noop, deadline, and SIO IO schedulers. * * Copyright (C) 2012 Brandon Berhent <bbedward@gmail.com> - * + * (C) 2014 LoungeKatt <twistedumbrella@gmail.com> + * 2015 Fixes to stop crashing on 3.10 by Matthew Alex <matthewalex@outlook.com> * FCFS, dispatches are back-inserted, deadlines ensure fairness. * Should work best with devices where there is no travel delay. */ @@ -156,21 +157,33 @@ static int zen_dispatch_requests(struct request_queue *q, int force) return 1; } -static void *zen_init_queue(struct request_queue *q) +static int zen_init_queue(struct request_queue *q, struct elevator_type *e) { struct zen_data *zdata; + struct elevator_queue *eq; + + eq = elevator_alloc(q, e); + if (!eq) + return -ENOMEM; zdata = kmalloc_node(sizeof(*zdata), GFP_KERNEL, q->node); - if (!zdata) - return NULL; + if (!zdata) { + kobject_put(&eq->kobj); + return -ENOMEM; + } + eq->elevator_data = zdata; + + + spin_lock_irq(q->queue_lock); + q->elevator = eq; + spin_unlock_irq(q->queue_lock); + INIT_LIST_HEAD(&zdata->fifo_list[SYNC]); INIT_LIST_HEAD(&zdata->fifo_list[ASYNC]); - zdata->fifo_expire[SYNC] = sync_expire; zdata->fifo_expire[ASYNC] = async_expire; zdata->fifo_batch = fifo_batch; - - return zdata; + return 0; } static void zen_exit_queue(struct elevator_queue *e) @@ -210,7 +223,7 @@ SHOW_FUNCTION(zen_async_expire_show, zdata->fifo_expire[ASYNC], 1); SHOW_FUNCTION(zen_fifo_batch_show, zdata->fifo_batch, 0); #undef SHOW_FUNCTION -#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV, NDX) \ +#define STORE_FUNCTION(__FUNC, __PTR, MIN, MAX, __CONV) \ static ssize_t __FUNC(struct elevator_queue *e, const char *page, size_t count) \ { \ struct zen_data *zdata = e->elevator_data; \ @@ -226,9 +239,9 @@ static ssize_t __FUNC(struct elevator_queue *e, const char *page, size_t count) *(__PTR) = __data; \ return ret; \ } -STORE_FUNCTION(zen_sync_expire_store, &zdata->fifo_expire[SYNC], 0, INT_MAX, 1, 0); -STORE_FUNCTION(zen_async_expire_store, &zdata->fifo_expire[ASYNC], 0, INT_MAX, 1, 1); -STORE_FUNCTION(zen_fifo_batch_store, &zdata->fifo_batch, 0, INT_MAX, 0, 2); +STORE_FUNCTION(zen_sync_expire_store, &zdata->fifo_expire[SYNC], 0, INT_MAX, 1); +STORE_FUNCTION(zen_async_expire_store, &zdata->fifo_expire[ASYNC], 0, INT_MAX, 1); +STORE_FUNCTION(zen_fifo_batch_store, &zdata->fifo_batch, 0, INT_MAX, 0); #undef STORE_FUNCTION #define DD_ATTR(name) \ @@ -259,9 +272,7 @@ static struct elevator_type iosched_zen = { static int __init zen_init(void) { - elv_register(&iosched_zen); - - return 0; + return elv_register(&iosched_zen); } static void __exit zen_exit(void) @@ -277,4 +288,3 @@ MODULE_AUTHOR("Brandon Berhent"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Zen IO scheduler"); MODULE_VERSION("1.0"); - |