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stable/btrfs: fix backport bug in d819d97ea0 ("btrfs: honor path->skip_locking in backref code")

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Upstream commit 38e3eebff6 ("btrfs: honor path->skip_locking in
backref code") was incorrectly backported to 4.14.y . It misses removal
of two lines from original commit, what cause deadlock.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=203993
Reported-by: Olivier Mazouffre <olivier.mazouffre@ims-bordeaux.fr>
Fixes: d819d97ea0 ("btrfs: honor path->skip_locking in backref code")
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stanislaw Gruszka 2019-07-08 14:01:34 +02:00 committed by Greg Kroah-Hartman
parent 93ca6e2019
commit c875ac0a43
1 changed files with 0 additions and 2 deletions
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2
fs/btrfs/backref.c
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@ -1290,8 +1290,6 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans,
ret = -EIO;
goto out;
}
btrfs_tree_read_lock(eb);
btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK);
if (!path->skip_locking) {
btrfs_tree_read_lock(eb);
btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK);