[PATCH v6 1/5] locks: allow support for write delegation
From: Dai Ngo <dai.ngo@oracle.com>
Date: 2023-06-29 02:36:39
Subsystem:
file locking (flock() and fcntl()/lockf()), filesystems (vfs and infrastructure), the rest · Maintainers:
Jeff Layton, Chuck Lever, Alexander Viro, Christian Brauner, Linus Torvalds
Remove the check for F_WRLCK in generic_add_lease to allow file_lock to be used for write delegation. First consumer is NFSD. Signed-off-by: Dai Ngo <dai.ngo@oracle.com> --- fs/locks.c | 7 ------- 1 file changed, 7 deletions(-)
diff --git a/fs/locks.c b/fs/locks.c
index df8b26a42524..08fb0b4fd4f8 100644
--- a/fs/locks.c
+++ b/fs/locks.c@@ -1729,13 +1729,6 @@ generic_add_lease(struct file *filp, long arg, struct file_lock **flp, void **pr if (is_deleg && !inode_trylock(inode)) return -EAGAIN; - if (is_deleg && arg == F_WRLCK) { - /* Write delegations are not currently supported: */ - inode_unlock(inode); - WARN_ON_ONCE(1); - return -EINVAL; - } - percpu_down_read(&file_rwsem); spin_lock(&ctx->flc_lock); time_out_leases(inode, &dispose);
--
2.39.3