From a9f184f02aa49d46c4c35311d93cbcd1c61149df Mon Sep 17 00:00:00 2001 From: Sukadev Bhattiprolu Date: Wed, 28 Jan 2009 16:57:12 -0800 Subject: [PATCH] devpts: Must release s_umount on error We should drop the ->s_umount mutex if an error occurs after the sget()/grab_super() call. This was introduced when adding support for multiple instances of devpts and noticed during a code review/reorg. Signed-off-by: Sukadev Bhattiprolu Signed-off-by: Al Viro --- fs/devpts/inode.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index bff4052b05e..140b43144cd 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -385,6 +385,7 @@ static int new_pts_mount(struct file_system_type *fs_type, int flags, fail: dput(mnt->mnt_sb->s_root); + up_write(&mnt->mnt_sb->s_umount); deactivate_super(mnt->mnt_sb); return err; } @@ -473,6 +474,7 @@ static int init_pts_mount(struct file_system_type *fs_type, int flags, err = mknod_ptmx(mnt->mnt_sb); if (err) { dput(mnt->mnt_sb->s_root); + up_write(&mnt->mnt_sb->s_umount); deactivate_super(mnt->mnt_sb); } -- 2.41.1