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| author | Tejun Heo <tj@kernel.org> | 2010-07-20 22:09:01 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2010-07-22 22:58:47 +0200 |
| commit | 8af7c12436803291c90295259db23d371a7ad9cc (patch) | |
| tree | 5e75360876ac5783a3e64bd35a1715847d90e9ce /fs/fscache/internal.h | |
| parent | 8b8edefa2fffbff97f9eec8b70e78ae23abad1a0 (diff) | |
| download | blackbird-obmc-linux-8af7c12436803291c90295259db23d371a7ad9cc.tar.gz blackbird-obmc-linux-8af7c12436803291c90295259db23d371a7ad9cc.zip | |
fscache: convert operation to use workqueue instead of slow-work
Make fscache operation to use only workqueue instead of combination of
workqueue and slow-work. FSCACHE_OP_SLOW is dropped and
FSCACHE_OP_FAST is renamed to FSCACHE_OP_ASYNC and uses newly added
fscache_op_wq workqueue to execute op->processor().
fscache_operation_init_slow() is dropped and fscache_operation_init()
now takes @processor argument directly.
* Unbound workqueue is used.
* fscache_retrieval_work() is no longer necessary as OP_ASYNC now does
the equivalent thing.
* sysctl fscache.operation_max_active added to control concurrency.
The default value is nr_cpus clamped between 2 and
WQ_UNBOUND_MAX_ACTIVE.
* debugfs support is dropped for now. Tracing API based debug
facility is planned to be added.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/fscache/internal.h')
| -rw-r--r-- | fs/fscache/internal.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h index 6e0b5fb25231..6a026441c5a6 100644 --- a/fs/fscache/internal.h +++ b/fs/fscache/internal.h @@ -83,6 +83,7 @@ extern unsigned fscache_defer_create; extern unsigned fscache_debug; extern struct kobject *fscache_root; extern struct workqueue_struct *fscache_object_wq; +extern struct workqueue_struct *fscache_op_wq; DECLARE_PER_CPU(wait_queue_head_t, fscache_object_cong_wait); static inline bool fscache_object_congested(void) |
