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Commit 0878ae2d authored by Jens Axboe's avatar Jens Axboe
Browse files

Merge branch 'bcache-for-3.11' of git://evilpiepirate.org/~kent/linux-bcache into for-3.11/drivers 

Kent writes:

Hey Jens - I've been busy torture testing and chasing bugs, here's the
fruits of my labors. These are all fairly small fixes, some of them
quite important.
parents d0e3d023 79826c35

drivers/md/bcache/alloc.c

+8 −10
Original line number Diff line number Diff line
@@ -63,6 +63,7 @@ 
#include "bcache.h"

#include "btree.h"



#include <linux/freezer.h>

#include <linux/kthread.h>

#include <linux/random.h>

#include <trace/events/bcache.h>
@@ -363,11 +364,10 @@ do { \ 
			break;						\

									\

		mutex_unlock(&(ca)->set->bucket_lock);			\

		if (test_bit(CACHE_SET_STOPPING_2, &ca->set->flags)) {	\

			closure_put(&ca->set->cl);			\

		if (kthread_should_stop())				\

			return 0;					\

		}							\

									\

		try_to_freeze();					\

		schedule();						\

		mutex_lock(&(ca)->set->bucket_lock);			\

	}								\
@@ -547,14 +547,12 @@ int bch_bucket_alloc_set(struct cache_set *c, unsigned watermark, 


int bch_cache_allocator_start(struct cache *ca)

{

	ca->alloc_thread = kthread_create(bch_allocator_thread,

	struct task_struct *k = kthread_run(bch_allocator_thread,

					    ca, "bcache_allocator");

	if (IS_ERR(ca->alloc_thread))

		return PTR_ERR(ca->alloc_thread);



	closure_get(&ca->set->cl);

	wake_up_process(ca->alloc_thread);

	if (IS_ERR(k))

		return PTR_ERR(k);



	ca->alloc_thread = k;

	return 0;

}

drivers/md/bcache/bcache.h

+1 −4
Original line number Diff line number Diff line
@@ -434,6 +434,7 @@ struct bcache_device { 


	/* If nonzero, we're detaching/unregistering from cache set */

	atomic_t		detaching;

	int			flush_done;



	uint64_t		nr_stripes;

	unsigned		stripe_size_bits;
@@ -663,13 +664,9 @@ struct gc_stat { 
 * CACHE_SET_STOPPING always gets set first when we're closing down a cache set;

 * we'll continue to run normally for awhile with CACHE_SET_STOPPING set (i.e.

 * flushing dirty data).

 *

 * CACHE_SET_STOPPING_2 gets set at the last phase, when it's time to shut down

 * the allocation thread.

 */

#define CACHE_SET_UNREGISTERING		0

#define	CACHE_SET_STOPPING		1

#define	CACHE_SET_STOPPING_2		2



struct cache_set {

	struct closure		cl;

drivers/md/bcache/btree.c

+3 −1
Original line number Diff line number Diff line
@@ -1410,8 +1410,10 @@ static void btree_gc_start(struct cache_set *c) 
	for_each_cache(ca, c, i)

		for_each_bucket(b, ca) {

			b->gc_gen = b->gen;

			if (!atomic_read(&b->pin))

			if (!atomic_read(&b->pin)) {

				SET_GC_MARK(b, GC_MARK_RECLAIMABLE);

				SET_GC_SECTORS_USED(b, 0);

			}

		}



	mutex_unlock(&c->bucket_lock);

drivers/md/bcache/closure.c

+4 −2
Original line number Diff line number Diff line
@@ -66,16 +66,18 @@ static inline void closure_put_after_sub(struct closure *cl, int flags) 
		} else {

			struct closure *parent = cl->parent;

			struct closure_waitlist *wait = closure_waitlist(cl);

			closure_fn *destructor = cl->fn;



			closure_debug_destroy(cl);



			smp_mb();

			atomic_set(&cl->remaining, -1);



			if (wait)

				closure_wake_up(wait);



			if (cl->fn)

				cl->fn(cl);

			if (destructor)

				destructor(cl);



			if (parent)

				closure_put(parent);

drivers/md/bcache/journal.c

+6 −1
Original line number Diff line number Diff line
@@ -184,9 +184,14 @@ bsearch: 
		pr_debug("starting binary search, l %u r %u", l, r);



		while (l + 1 < r) {

			seq = list_entry(list->prev, struct journal_replay,

					 list)->j.seq;



			m = (l + r) >> 1;

			read_bucket(m);



			if (read_bucket(m))

			if (seq != list_entry(list->prev, struct journal_replay,

					      list)->j.seq)

				l = m;

			else

				r = m;