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| author | Chris Mason <clm@fb.com> | 2015-12-15 18:09:59 +0100 |
|---|---|---|
| committer | Chris Mason <clm@fb.com> | 2015-12-15 18:09:59 +0100 |
| commit | 1d3a5a82fe724c53c472a18a31fb0bbf33dfaba2 (patch) | |
| tree | 992e3c8ba9681fafecd5c8ff9b8ca02ec9acea78 /fs | |
| parent | Btrfs: check prepare_uptodate_page() error code earlier (diff) | |
| parent | btrfs: fix misleading warning when space cache failed to load (diff) | |
| download | linux-1d3a5a82fe724c53c472a18a31fb0bbf33dfaba2.tar.xz linux-1d3a5a82fe724c53c472a18a31fb0bbf33dfaba2.zip | |
Merge branch 'for-chris-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/fdmanana/linux into for-linus-4.4
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 10 | ||||
| -rw-r--r-- | fs/btrfs/free-space-cache.c | 2 | ||||
| -rw-r--r-- | fs/btrfs/transaction.c | 1 | ||||
| -rw-r--r-- | fs/btrfs/transaction.h | 2 | ||||
| -rw-r--r-- | fs/btrfs/volumes.c | 3 |
5 files changed, 10 insertions, 8 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 4b89680a1923..c4661db2b72a 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -10480,11 +10480,15 @@ void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info) * until transaction commit to do the actual discard. */ if (trimming) { - WARN_ON(!list_empty(&block_group->bg_list)); - spin_lock(&trans->transaction->deleted_bgs_lock); + spin_lock(&fs_info->unused_bgs_lock); + /* + * A concurrent scrub might have added us to the list + * fs_info->unused_bgs, so use a list_move operation + * to add the block group to the deleted_bgs list. + */ list_move(&block_group->bg_list, &trans->transaction->deleted_bgs); - spin_unlock(&trans->transaction->deleted_bgs_lock); + spin_unlock(&fs_info->unused_bgs_lock); btrfs_get_block_group(block_group); } end_trans: diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index e6fc7d9e65b1..f331ef7d573a 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -891,7 +891,7 @@ out: spin_unlock(&block_group->lock); ret = 0; - btrfs_warn(fs_info, "failed to load free space cache for block group %llu, rebuild it now", + btrfs_warn(fs_info, "failed to load free space cache for block group %llu, rebuilding it now", block_group->key.objectid); } diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 3367a3c6f214..be8eae80ff65 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -274,7 +274,6 @@ loop: cur_trans->num_dirty_bgs = 0; spin_lock_init(&cur_trans->dirty_bgs_lock); INIT_LIST_HEAD(&cur_trans->deleted_bgs); - spin_lock_init(&cur_trans->deleted_bgs_lock); spin_lock_init(&cur_trans->dropped_roots_lock); list_add_tail(&cur_trans->list, &fs_info->trans_list); extent_io_tree_init(&cur_trans->dirty_pages, diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h index 0da21ca9b3fb..64c8221b6165 100644 --- a/fs/btrfs/transaction.h +++ b/fs/btrfs/transaction.h @@ -77,8 +77,8 @@ struct btrfs_transaction { */ struct mutex cache_write_mutex; spinlock_t dirty_bgs_lock; + /* Protected by spin lock fs_info->unused_bgs_lock. */ struct list_head deleted_bgs; - spinlock_t deleted_bgs_lock; spinlock_t dropped_roots_lock; struct btrfs_delayed_ref_root delayed_refs; int aborted; diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 750285e4f274..86124cde907a 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3548,12 +3548,11 @@ again: ret = btrfs_force_chunk_alloc(trans, chunk_root, BTRFS_BLOCK_GROUP_DATA); + btrfs_end_transaction(trans, chunk_root); if (ret < 0) { mutex_unlock(&fs_info->delete_unused_bgs_mutex); goto error; } - - btrfs_end_transaction(trans, chunk_root); chunk_reserved = 1; } |