From cb001095ca705dcd95f57fe98867e38a4889916d Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Thu, 9 Jun 2016 16:22:11 -0400 Subject: [PATCH] btrfs: plumb fs_info into btrfs_work 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 Signed-off-by: David Sterba --- 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 +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 4956562..cb6d13c 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2310,17 +2310,19 @@ 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 @@ -2328,41 +2330,48 @@ 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 acfe720..68c8a09 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; -- 2.7.4