It fails with -ECHILD rather than make an RPC call.
This allows nfs_lookup_revalidate to call it in RCU-walk mode.
Signed-off-by: NeilBrown <neilb@xxxxxxx>
---
fs/nfs/dir.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 76b5f40c8587..e808db561201 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1018,6 +1018,8 @@ int nfs_lookup_verify_inode(struct inode *inode, unsigned int flags)
out:
return (inode->i_nlink == 0) ? -ENOENT : 0;
out_force:
+ if (flags & LOOKUP_RCU)
+ return -ECHILD;
ret = __nfs_revalidate_inode(server, inode);
if (ret != 0)
return ret;
@@ -1094,11 +1096,11 @@ static int nfs_lookup_revalidate(struct dentry *dentry, unsigned int flags)
if (!nfs_is_exclusive_create(dir, flags) &&
nfs_check_verifier(dir, dentry, flags & LOOKUP_RCU)) {
- if (flags & LOOKUP_RCU)
- return -ECHILD;
-
- if (nfs_lookup_verify_inode(inode, flags))
+ if (nfs_lookup_verify_inode(inode, flags)) {
+ if (flags & LOOKUP_RCU)
+ return -ECHILD;
goto out_zap_parent;
+ }
goto out_valid;
}
--
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