Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit bf0c55c9 authored by Slava Pestov's avatar Slava Pestov Committed by Kent Overstreet
Browse files

bcache: fix crash with incomplete cache set 

Change-Id: I6abde52afe917633480caaf4e2518f42a816d886
parent d83353b3

drivers/md/bcache/bcache.h

+4 −0
Original line number Diff line number Diff line
@@ -477,9 +477,13 @@ 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_RUNNING means all cache devices have been registered and journal

 * replay is complete.

 */

#define CACHE_SET_UNREGISTERING		0

#define	CACHE_SET_STOPPING		1

#define	CACHE_SET_RUNNING		2



struct cache_set {

	struct closure		cl;

drivers/md/bcache/super.c

+4 −0
Original line number Diff line number Diff line
@@ -1284,6 +1284,9 @@ int bch_flash_dev_create(struct cache_set *c, uint64_t size) 
	if (test_bit(CACHE_SET_STOPPING, &c->flags))

		return -EINTR;



	if (!test_bit(CACHE_SET_RUNNING, &c->flags))

		return -EPERM;



	u = uuid_find_empty(c);

	if (!u) {

		pr_err("Can't create volume, no room for UUID");
@@ -1706,6 +1709,7 @@ static void run_cache_set(struct cache_set *c) 


	flash_devs_run(c);



	set_bit(CACHE_SET_RUNNING, &c->flags);

	return;

err:

	closure_sync(&cl);