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s=arc-20220608; d=hostedemail.com; t=1664190083; a=rsa-sha256; cv=none; b=koDO3HE3G9pUMhLZGaGt5iwUKz8xmYVeMOgv15Ey0xLbGsQ9+M9gnA2UWn8Dfl8dVhRJjE Hdr0k/bTSFAAGDL7GVihWhNaOkKAwPU9sxt6Tz9KuVd2C9q80jqaatQsHYcNWLVfLbMAej QvGUhXtGwPJ9xprNrnenFg+MQ5K7O5M= X-Rspam-User: X-Rspamd-Queue-Id: 0F2B11C0018 X-Rspamd-Server: rspam01 X-Stat-Signature: 1gyf5hj6xbx5kt55imuen8wrhettagbp Authentication-Results: imf21.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=U2kAuFUf; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=MNje5hx1; dmarc=none; spf=pass (imf21.hostedemail.com: domain of dsterba@suse.cz designates 195.135.220.29 as permitted sender) smtp.mailfrom=dsterba@suse.cz X-HE-Tag: 1664190082-553611 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Sep 26, 2022 at 10:14:40AM +0100, Filipe Manana wrote: > On Mon, Sep 12, 2022 at 12:27:42PM -0700, Stefan Roesch wrote: > > From: Josef Bacik > > +{ > > + struct extent_buffer *eb; > > + > > + while (1) { > > + eb = btrfs_root_node(root); > > + if (!btrfs_try_tree_read_lock(eb)) > > + return ERR_PTR(-EAGAIN); > > There's a leak of the extent buffer here. > This fixes it up: > > diff --git a/fs/btrfs/locking.c b/fs/btrfs/locking.c > index 9d53bcfb6d9b..0eab3cb274a1 100644 > --- a/fs/btrfs/locking.c > +++ b/fs/btrfs/locking.c > @@ -298,8 +298,10 @@ struct extent_buffer *btrfs_try_read_lock_root_node(struct btrfs_root *root) > > while (1) { > eb = btrfs_root_node(root); > - if (!btrfs_try_tree_read_lock(eb)) > + if (!btrfs_try_tree_read_lock(eb)) { > + free_extent_buffer(eb); > return ERR_PTR(-EAGAIN); > + } > if (eb == root->node) > break; > btrfs_tree_read_unlock(eb); Folded to the commit, thanks.