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-rw-r--r--fs/btrfs/free-space-cache.c32
1 files changed, 18 insertions, 14 deletions
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index d773f229d14d..81fa75a8e1f3 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -1119,10 +1119,7 @@ static int flush_dirty_cache(struct inode *inode)
}
static void noinline_for_stack
-cleanup_write_cache_enospc(struct inode *inode,
- struct btrfs_io_ctl *io_ctl,
- struct extent_state **cached_state,
- struct list_head *bitmap_list)
+cleanup_bitmap_list(struct list_head *bitmap_list)
{
struct list_head *pos, *n;
@@ -1131,6 +1128,14 @@ cleanup_write_cache_enospc(struct inode *inode,
list_entry(pos, struct btrfs_free_space, list);
list_del_init(&entry->list);
}
+}
+
+static void noinline_for_stack
+cleanup_write_cache_enospc(struct inode *inode,
+ struct btrfs_io_ctl *io_ctl,
+ struct extent_state **cached_state,
+ struct list_head *bitmap_list)
+{
io_ctl_drop_pages(io_ctl);
unlock_extent_cached(&BTRFS_I(inode)->io_tree, 0,
i_size_read(inode) - 1, cached_state,
@@ -1266,11 +1271,8 @@ static int __btrfs_write_out_cache(struct btrfs_root *root, struct inode *inode,
ret = write_cache_extent_entries(io_ctl, ctl,
block_group, &entries, &bitmaps,
&bitmap_list);
- spin_unlock(&ctl->tree_lock);
- if (ret) {
- mutex_unlock(&ctl->cache_writeout_mutex);
- goto out_nospc;
- }
+ if (ret)
+ goto out_nospc_locked;
/*
* Some spaces that are freed in the current transaction are pinned,
@@ -1281,17 +1283,14 @@ static int __btrfs_write_out_cache(struct btrfs_root *root, struct inode *inode,
* the dirty list and redo it. No locking needed
*/
ret = write_pinned_extent_entries(root, block_group, io_ctl, &entries);
- if (ret) {
- mutex_unlock(&ctl->cache_writeout_mutex);
- goto out_nospc;
- }
+ if (ret)
+ goto out_nospc_locked;
/*
* At last, we write out all the bitmaps and keep cache_writeout_mutex
* locked while doing it because a concurrent trim can be manipulating
* or freeing the bitmap.
*/
- spin_lock(&ctl->tree_lock);
ret = write_bitmap_entries(io_ctl, &bitmap_list);
spin_unlock(&ctl->tree_lock);
mutex_unlock(&ctl->cache_writeout_mutex);
@@ -1344,6 +1343,11 @@ out:
iput(inode);
return ret;
+out_nospc_locked:
+ cleanup_bitmap_list(&bitmap_list);
+ spin_unlock(&ctl->tree_lock);
+ mutex_unlock(&ctl->cache_writeout_mutex);
+
out_nospc:
cleanup_write_cache_enospc(inode, io_ctl, &cached_state, &bitmap_list);