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locks: allow support for write delegation 

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>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Dai Ngo 2023-06-29 18:52:37 -07:00 committed by Chuck Lever
parent f16ff1cafb
commit d67cd907cf
1 changed files with 0 additions and 7 deletions
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7
fs/locks.c
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@ -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);