[PATCH 1/3] nilfs2: only call unlock_new_inode() if I_NEW

From: Ryusuke Konishi
Date: Mon Jul 27 2020 - 10:28:53 EST

From: Eric Biggers <ebiggers@xxxxxxxxxx>

unlock_new_inode() is only meant to be called after a new inode has
already been inserted into the hash table. But nilfs_new_inode() can
call it even before it has inserted the inode, triggering the WARNING in
unlock_new_inode(). Fix this by only calling unlock_new_inode() if the
inode has the I_NEW flag set, indicating that it's in the table.

Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxx>
fs/nilfs2/inode.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 28009ec54420..3318dd1350b2 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -388,7 +388,8 @@ struct inode *nilfs_new_inode(struct inode *dir, umode_t mode)

- unlock_new_inode(inode);
+ if (inode->i_state & I_NEW)
+ unlock_new_inode(inode);
iput(inode); /*
* raw_inode will be deleted through
* nilfs_evict_inode().