From: Jeff Mahoney <je...@suse.com>
In order to provide an fsid for trace events, we'll need a btrfs_fs_info
pointer. The most lightweight way to do that for btrfs_work structures
is to associate it with the __btrfs_workqueue structure. Each queued
btrfs_work structure has a workqueue associated with it, so that's
a natural fit. It's a privately defined structures, so we add accessors
to retrieve the fs_info pointer.
Signed-off-by: Jeff Mahoney <je...@suse.com>
---
fs/btrfs/async-thread.c | 31 +++++++++++++++++++++++++------
fs/btrfs/async-thread.h | 6 +++++-
fs/btrfs/disk-io.c | 47 ++++++++++++++++++++++++++++-------------------
fs/btrfs/scrub.c | 10 +++++-----
4 files changed, 63 insertions(+), 31 deletions(-)
diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c
index 5fb60ea..e0f071f 100644
--- a/fs/btrfs/async-thread.c
+++ b/fs/btrfs/async-thread.c
@@ -34,6 +34,10 @@
struct __btrfs_workqueue {
struct workqueue_struct *normal_wq;
+
+ /* File system this workqueue services */
+ struct btrfs_fs_info *fs_info;
+
/* List head pointing to ordered work list */
struct list_head ordered_list;
@@ -70,6 +74,18 @@ void btrfs_##name(struct work_struct *arg)
\
normal_work_helper(work); \
}
+struct btrfs_fs_info *
+btrfs_workqueue_owner(struct __btrfs_workqueue *wq)
+{
+ return wq->fs_info;
+}
+
+struct btrfs_fs_info *
+btrfs_work_owner(struct btrfs_work *work)
+{
+ return work->wq->fs_info;
+}
+
BTRFS_WORK_HELPER(worker_helper);
BTRFS_WORK_HELPER(delalloc_helper);
BTRFS_WORK_HELPER(flush_delalloc_helper);
@@ -94,14 +110,15 @@ BTRFS_WORK_HELPER(scrubnc_helper);
BTRFS_WORK_HELPER(scrubparity_helper);
static struct __btrfs_workqueue *
-__btrfs_alloc_workqueue(const char *name, unsigned int flags, int limit_active,
- int thresh)
+__btrfs_alloc_workqueue(struct btrfs_fs_info *fs_info, const char *name,
+ unsigned int flags, int limit_active, int thresh)
{
struct __btrfs_workqueue *ret = kzalloc(sizeof(*ret), GFP_KERNEL);
if (!ret)
return NULL;
+ ret->fs_info = fs_info;
ret->limit_active = limit_active;
atomic_set(&ret->pending, 0);
if (thresh == 0)
@@ -143,7 +160,8 @@ __btrfs_alloc_workqueue(const char *name, unsigned int
flags, int limit_active,
static inline void
__btrfs_destroy_workqueue(struct __btrfs_workqueue *wq);
-struct btrfs_workqueue *btrfs_alloc_workqueue(const char *name,
+struct btrfs_workqueue *btrfs_alloc_workqueue(struct btrfs_fs_info *fs_info,
+ const char *name,
unsigned int flags,
int limit_active,
int thresh)
@@ -153,7 +171,8 @@ struct btrfs_workqueue *btrfs_alloc_workqueue(const char
*name,
if (!ret)
return NULL;
- ret->normal = __btrfs_alloc_workqueue(name, flags & ~WQ_HIGHPRI,
+ ret->normal = __btrfs_alloc_workqueue(fs_info, name,
+ flags & ~WQ_HIGHPRI,
limit_active, thresh);
if (!ret->normal) {
kfree(ret);
@@ -161,8 +180,8 @@ struct btrfs_workqueue *btrfs_alloc_workqueue(const char
*name,
}
if (flags & WQ_HIGHPRI) {
- ret->high = __btrfs_alloc_workqueue(name, flags, limit_active,
- thresh);
+ ret->high = __btrfs_alloc_workqueue(fs_info, name, flags,
+ limit_active, thresh);
if (!ret->high) {
__btrfs_destroy_workqueue(ret->normal);
kfree(ret);
diff --git a/fs/btrfs/async-thread.h b/fs/btrfs/async-thread.h
index ad4d064..8e52484 100644
--- a/fs/btrfs/async-thread.h
+++ b/fs/btrfs/async-thread.h
@@ -21,6 +21,7 @@
#define __BTRFS_ASYNC_THREAD_
#include <linux/workqueue.h>
+struct btrfs_fs_info;
struct btrfs_workqueue;
/* Internal use only */
struct __btrfs_workqueue;
@@ -67,7 +68,8 @@ BTRFS_WORK_HELPER_PROTO(scrubnc_helper);
BTRFS_WORK_HELPER_PROTO(scrubparity_helper);
-struct btrfs_workqueue *btrfs_alloc_workqueue(const char *name,
+struct btrfs_workqueue *btrfs_alloc_workqueue(struct btrfs_fs_info *fs_info,
+ const char *name,
unsigned int flags,
int limit_active,
int thresh);
@@ -80,4 +82,6 @@ void btrfs_queue_work(struct btrfs_workqueue *wq,
void btrfs_destroy_workqueue(struct btrfs_workqueue *wq);
void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max);
void btrfs_set_work_high_priority(struct btrfs_work *work);
+struct btrfs_fs_info *btrfs_work_owner(struct btrfs_work *work);
+struct btrfs_fs_info *btrfs_workqueue_owner(struct __btrfs_workqueue *wq);
#endif
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 6628fca..d040d66 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2306,17 +2306,19 @@ static int btrfs_init_workqueues(struct btrfs_fs_info
*fs_info,
unsigned int flags = WQ_MEM_RECLAIM | WQ_FREEZABLE | WQ_UNBOUND;
fs_info->workers =
- btrfs_alloc_workqueue("worker", flags | WQ_HIGHPRI,
- max_active, 16);
+ btrfs_alloc_workqueue(fs_info, "worker",
+ flags | WQ_HIGHPRI, max_active, 16);
fs_info->delalloc_workers =
- btrfs_alloc_workqueue("delalloc", flags, max_active, 2);
+ btrfs_alloc_workqueue(fs_info, "delalloc",
+ flags, max_active, 2);
fs_info->flush_workers =
- btrfs_alloc_workqueue("flush_delalloc", flags, max_active, 0);
+ btrfs_alloc_workqueue(fs_info, "flush_delalloc",
+ flags, max_active, 0);
fs_info->caching_workers =
- btrfs_alloc_workqueue("cache", flags, max_active, 0);
+ btrfs_alloc_workqueue(fs_info, "cache", flags, max_active, 0);
/*
* a higher idle thresh on the submit workers makes it much more
@@ -2324,41 +2326,48 @@ static int btrfs_init_workqueues(struct btrfs_fs_info
*fs_info,
* devices
*/
fs_info->submit_workers =
- btrfs_alloc_workqueue("submit", flags,
+ btrfs_alloc_workqueue(fs_info, "submit", flags,
min_t(u64, fs_devices->num_devices,
max_active), 64);
fs_info->fixup_workers =
- btrfs_alloc_workqueue("fixup", flags, 1, 0);
+ btrfs_alloc_workqueue(fs_info, "fixup", flags, 1, 0);
/*
* endios are largely parallel and should have a very
* low idle thresh
*/
fs_info->endio_workers =
- btrfs_alloc_workqueue("endio", flags, max_active, 4);
+ btrfs_alloc_workqueue(fs_info, "endio", flags, max_active, 4);
fs_info->endio_meta_workers =
- btrfs_alloc_workqueue("endio-meta", flags, max_active, 4);
+ btrfs_alloc_workqueue(fs_info, "endio-meta", flags,
+ max_active, 4);
fs_info->endio_meta_write_workers =
- btrfs_alloc_workqueue("endio-meta-write", flags, max_active, 2);
+ btrfs_alloc_workqueue(fs_info, "endio-meta-write", flags,
+ max_active, 2);
fs_info->endio_raid56_workers =
- btrfs_alloc_workqueue("endio-raid56", flags, max_active, 4);
+ btrfs_alloc_workqueue(fs_info, "endio-raid56", flags,
+ max_active, 4);
fs_info->endio_repair_workers =
- btrfs_alloc_workqueue("endio-repair", flags, 1, 0);
+ btrfs_alloc_workqueue(fs_info, "endio-repair", flags, 1, 0);
fs_info->rmw_workers =
- btrfs_alloc_workqueue("rmw", flags, max_active, 2);
+ btrfs_alloc_workqueue(fs_info, "rmw", flags, max_active, 2);
fs_info->endio_write_workers =
- btrfs_alloc_workqueue("endio-write", flags, max_active, 2);
+ btrfs_alloc_workqueue(fs_info, "endio-write", flags,
+ max_active, 2);
fs_info->endio_freespace_worker =
- btrfs_alloc_workqueue("freespace-write", flags, max_active, 0);
+ btrfs_alloc_workqueue(fs_info, "freespace-write", flags,
+ max_active, 0);
fs_info->delayed_workers =
- btrfs_alloc_workqueue("delayed-meta", flags, max_active, 0);
+ btrfs_alloc_workqueue(fs_info, "delayed-meta", flags,
+ max_active, 0);
fs_info->readahead_workers =
- btrfs_alloc_workqueue("readahead", flags, max_active, 2);
+ btrfs_alloc_workqueue(fs_info, "readahead", flags,
+ max_active, 2);
fs_info->qgroup_rescan_workers =
- btrfs_alloc_workqueue("qgroup-rescan", flags, 1, 0);
+ btrfs_alloc_workqueue(fs_info, "qgroup-rescan", flags, 1, 0);
fs_info->extent_workers =
- btrfs_alloc_workqueue("extent-refs", flags,
+ btrfs_alloc_workqueue(fs_info, "extent-refs", flags,
min_t(u64, fs_devices->num_devices,
max_active), 8);
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 70427ef..86270c6 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -3781,27 +3781,27 @@ static noinline_for_stack int scrub_workers_get(struct
btrfs_fs_info *fs_info,
if (fs_info->scrub_workers_refcnt == 0) {
if (is_dev_replace)
fs_info->scrub_workers =
- btrfs_alloc_workqueue("scrub", flags,
+ btrfs_alloc_workqueue(fs_info, "scrub", flags,
1, 4);
else
fs_info->scrub_workers =
- btrfs_alloc_workqueue("scrub", flags,
+ btrfs_alloc_workqueue(fs_info, "scrub", flags,
max_active, 4);
if (!fs_info->scrub_workers)
goto fail_scrub_workers;
fs_info->scrub_wr_completion_workers =
- btrfs_alloc_workqueue("scrubwrc", flags,
+ btrfs_alloc_workqueue(fs_info, "scrubwrc", flags,
max_active, 2);
if (!fs_info->scrub_wr_completion_workers)
goto fail_scrub_wr_completion_workers;
fs_info->scrub_nocow_workers =
- btrfs_alloc_workqueue("scrubnc", flags, 1, 0);
+ btrfs_alloc_workqueue(fs_info, "scrubnc", flags, 1, 0);
if (!fs_info->scrub_nocow_workers)
goto fail_scrub_nocow_workers;
fs_info->scrub_parity_workers =
- btrfs_alloc_workqueue("scrubparity", flags,
+ btrfs_alloc_workqueue(fs_info, "scrubparity", flags,
max_active, 2);
if (!fs_info->scrub_parity_workers)
goto fail_scrub_parity_workers;
--
2.7.1
--
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