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authorJosef Bacik <josef@toxicpanda.com>2019-01-11 10:21:01 -0500
committerDavid Sterba <dsterba@suse.com>2019-01-18 17:27:21 +0100
commit3ec9a4c81c8cc2a8d9673588dd84d9cc7c31019b (patch)
tree7f6c891bbb299017b85fbd3b44a48465baa0d797
parent74d5d229b1bf60f93bff244b2dfc0eb21ec32a07 (diff)
downloadlinux-3ec9a4c81c8cc2a8d9673588dd84d9cc7c31019b.tar.bz2
btrfs: run delayed iputs before committing
Delayed iputs means we can have final iputs of deleted inodes in the queue, which could potentially generate a lot of pinned space that could be free'd. So before we decide to commit the transaction for ENOPSC reasons, run the delayed iputs so that any potential space is free'd up. If there is and we freed enough we can then commit the transaction and potentially be able to make our reservation. Reviewed-by: Omar Sandoval <osandov@fb.com> Signed-off-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: David Sterba <dsterba@suse.com>
-rw-r--r--fs/btrfs/extent-tree.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 6f6fae410fc1..d81035b7ea7d 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4952,6 +4952,15 @@ static void flush_space(struct btrfs_fs_info *fs_info,
ret = 0;
break;
case COMMIT_TRANS:
+ /*
+ * If we have pending delayed iputs then we could free up a
+ * bunch of pinned space, so make sure we run the iputs before
+ * we do our pinned bytes check below.
+ */
+ mutex_lock(&fs_info->cleaner_delayed_iput_mutex);
+ btrfs_run_delayed_iputs(fs_info);
+ mutex_unlock(&fs_info->cleaner_delayed_iput_mutex);
+
ret = may_commit_transaction(fs_info, space_info);
break;
default: